metal-organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

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Poly[[tris­­(μ2-acetato-κ2O:O′)(4-chloro­benzene-1,2-di­amine-κN)(μ3-hydroxido)dizinc] ethanol monosolvate]

aDepartment of Chemistry, State University of New York-College at Geneseo, 1 College Circle, Geneseo, NY 14454, USA
*Correspondence e-mail: geiger@geneseo.edu

(Received 10 March 2014; accepted 30 May 2014; online 7 June 2014)

The title compound, {[Zn2(CH3CO2)3(OH)(C6H7ClN2)]·C2H5OH}n, has alternating octa­hedrally and tetra­hedrally coordinated Zn2+ ions. The octa­hedral coordination sphere is composed of one N atom of the monodentate di­amino­chloro­benzene ligand, three acetate O atoms and two bridging hydroxide ligands. The tetra­hedral coordination sphere consists of three acetate O atoms and the hydroxide ligand. The zinc ions are bridged by acetate and hydroxide ligands. The result is a laddered-chain structure parallel to [100] with ethanol solvent mol­ecules occupying the space between the chains. The di­amine ligand chlorine substitutent is disordered over two equally populated positions as a result of a crystallographically imposed inversion center between adjacent ligands. The ethanol solvent mol­ecule exhibits disorder with the two components having refined occupancies of 0.696 (11) and 0.304 (11). O—H⋯O hydrogen bonds form between the hydroxide ligand and the ethanol solvent mol­ecule. N—H⋯O and N—H⋯N hydrogen bonding between the uncoordinated amine group and the acetate ligands and the coordinated amine group are also observed.

Related literature

A recent review of crystalline metal-organic frameworks has been published by Dey et al. (2014[Dey, C., Kundu, T., Biswal, B. P., Mallick, A. & Banerjee, R. (2014). Acta Cryst. B70, 3-10.]). For a review of such compounds in chemical sensors, see: Kreno et al. (2012[Kreno, L. E., Leong, K., Farha, O. K., Allendorf, M., Van Duyne, R. P. & Hupp, J. T. (2012). Chem. Rev. 112, 1105-1125.]) and for a review of the synthesis of such compounds, see: Farha & Hupp (2010[Farha, O. K. & Hupp, J. T. (2010). Acc. Chem. Res. 43, 1166-1175.]). For some other examples of zinc compounds with chain structures and bridging acetate ligands, see: Tan et al. (2011[Tan, Z.-D., Tan, F.-J., Tan, B. & Yi, Z.-W. (2011). Acta Cryst. E67, m1512.]); Luo et al. (2011[Luo, F., Yang, L., Zhang, P. & Liu, D. (2011). Acta Cryst. E67, m1608.]); Liu (2010[Liu, S.-Z. (2010). Acta Cryst. E66, m621.]); Hou et al. (2007a[Hou, Y.-J., Li, B.-Y., Yu, Y.-H., Sun, Z.-Z. & Hou, G.-F. (2007a). Acta Cryst. E63, m1838.],b[Hou, Y.-J., Yu, Y.-H., Sun, Z.-Z., Li, B.-Y. & Hou, G.-F. (2007b). Acta Cryst. E63, m1530.]). For examples of zinc complexes with monodentate 1,2-diaminobenzene ligands, see: Geiger (2012[Geiger, D. K. (2012). Acta Cryst. E68, m1040.]); Ovalle-Marroquín et al. (2002[Ovalle-Marroquín, P., Gómez-Lara, J. & Hernández-Ortega, S. (2002). Acta Cryst. E58, m269-m271.]).

[Scheme 1]

Experimental

Crystal data
  • [Zn2(C2H3O2)3(OH)(C6H7ClN2)]·C2H6O

  • Mr = 513.53

  • Triclinic, [P \overline 1]

  • a = 8.0769 (12) Å

  • b = 10.8723 (19) Å

  • c = 12.909 (3) Å

  • α = 101.511 (6)°

  • β = 96.399 (6)°

  • γ = 109.817 (5)°

  • V = 1025.1 (3) Å3

  • Z = 2

  • Mo Kα radiation

  • μ = 2.51 mm−1

  • T = 200 K

  • 0.60 × 0.40 × 0.02 mm

Data collection
  • Bruker SMART X2S benchtop diffractometer

  • Absorption correction: multi-scan (SADABS; Bruker, 2013[Bruker (2013). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]) Tmin = 0.52, Tmax = 0.95

  • 6443 measured reflections

  • 3329 independent reflections

  • 2403 reflections with I > 2σ(I)

  • Rint = 0.061

Refinement
  • R[F2 > 2σ(F2)] = 0.059

  • wR(F2) = 0.181

  • S = 1.05

  • 3329 reflections

  • 280 parameters

  • 92 restraints

  • H atoms treated by a mixture of independent and constrained refinement

  • Δρmax = 0.98 e Å−3

  • Δρmin = −1.05 e Å−3

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A D—H H⋯A DA D—H⋯A
O1—H1⋯OE1i 0.84 (2) 1.99 (3) 2.807 (11) 166 (8)
O1—H1⋯OE2i 0.84 (2) 2.03 (4) 2.83 (2) 160 (8)
N2—H2A⋯O81ii 0.90 (2) 2.38 (7) 2.914 (9) 118 (6)
N2—H2B⋯N1iii 0.91 (6) 2.32 (5) 3.128 (10) 148 (7)
N1—H1A⋯O71iv 0.91 (7) 2.19 (3) 3.082 (9) 169 (6)
OE1—H1E1⋯O82 0.84 1.97 2.780 (11) 163
OE2—H1E2⋯O92 0.84 2.32 3.02 (3) 140
Symmetry codes: (i) -x+1, -y+1, -z+1; (ii) -x, -y+1, -z+1; (iii) -x+1, -y+2, -z+1; (iv) x+1, y+1, z.

Data collection: APEX2 (Bruker, 2013[Bruker (2013). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2013[Bruker (2013). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]) and Mercury (Macrae et al., 2008[Macrae, C. F., Bruno, I. J., Chisholm, J. A., Edgington, P. R., McCabe, P., Pidcock, E., Rodriguez-Monge, L., Taylor, R., van de Streek, J. & Wood, P. A. (2008). J. Appl. Cryst. 41, 466-470.]); software used to prepare material for publication: publCIF (Westrip, 2010[Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.]).

Supporting information


Comment top

Because of their large internal surface areas and uniformly structured cavities which small molecules may occupy, metal-organic frameworks (MOFs) are of inherent interest in areas such as gas storage, catalysis, chemical sensors and molecular separation (Dey et al., 2014; Kreno et al., 2012; Farha & Hupp, 2010). The title compound is an example of a one-dimensional MOF in which space between polymeric chains provides room for incorporation of small, non-covalently bonded molecules. To our knowledge, this compound is the first example of a mixed acetato and monodentetate diamine coordinated zinc compound with a one-dimensional chain structure.

The title compound exhibits a laddered-chain structure. The atom-labeling scheme for the basic repeating unit is shown in figure 1. Only the major contributor to the disordered ethanol solvate molecule is shown and only one of the two half-occupied sites of the chlorine substitutent is represented. (The other half-occupied chlorine is bound to C4.) The disorder of the chlorine results from a combination of a crystallographically-imposed inversion center between adjacent chlorodiaminobenzene ligands and the unsymmetrical substitution of the diamine ligand (i.e., Zn coordination of one of the nitrogen atoms puts the chlorine atom in one of the occupied sites and coordination of the other nitrogen atom puts the chlorine atom in the other partially occupied site).

Figure 2 shows a view of the polymeric chain in which the distorted octahedral and tetrahedral coordination spheres of the zinc ions are visible. Two asymmetric units make up the repeating motif, a Zn4(µ-OH)2(µ-acetato-κ2-O:O')4 core in which each of two distorted-octahedrally-coordinated Zn ions are bridged to a distorted-tetrahedrally-coordinated Zn ion by two acetate ligands and one hydroxide ligand. The octahedral coordination sphere is completed by a monodentate 1,2-diamino-4-chlorobenzene ligand and a third bridging acetato-κ2-O:O' ligand. The tetrahedral coordination sphere is completed by a bridging acetato-κ2-O:O' ligand.

Coordination to the bridging hydroxide ligands is decidedly unsymmetrical. The Zn1–O1 bond distances are 2.079 (5) Å and 2.147 (5) Å with the shorter bond distance corresponding to the hydroxide ligand trans to the diaminobenzene ligand (see Figure 2). The Zn2–O1 bond distance is 1.937 (5) Å. The Zn1–O1–Zn1i angle is 97.7 (2)o and the Zn2–O1–Zn1 and Zn2–O1–Zn1i angles are 127.8 (2)o and 101.7 (2)o. The tetrahedral coordination sphere is highly distorted. The O–Zn—O angles range from 94.7 (2)o to 130.8 (2)o, respectively.

Space between the chains is occupied by approximately two-fold rotationally-disordered ethanol molecules (see figure 3). Calculations using PLATON (Spek, 2009) show that the ethanol solvate molecule occupies a void with a volume of 224.1 Å3. Single crystals of the compound were subjected to vacuum at room temperature for extended periods followed by data collection. Subsequent structure solution revealed that the solvate remained trapped in the void. Attempts to heat crystals to 110oC under vacuum resulted in decomposition. Hydrogen bonds between the hydroxide and ligand major and minor components of the disordered ethanol solvate molecule are observed and may account for the tenacity of the ethanol binding. The HO···O distances are 2.807 (11) Å and 2.83 (2) Å and the O—H···O distances observed are 1.99 (3) and 2.03 (4) Å for the major and minor components of the disordered ethanol.

In addition to the hydrogen bonds involving the solvate molecule, N—H···O and N—H···N hydrogen bonding involving the uncoordinated amine group as the donor moiety and acetate ligands and the coordinated amine group as the acceptors are observed. Pertinent metrics involving these interactions are found in Table 1.

The benzene ring of the diamine ligand is planar with the atom having the largest deviation being C2, which sits 0.011 (6) Å above the plane. The two amine nitrogen atoms deviate only slightly from the benzene ring plane with N1 being 0.048 (13) Å and N2 being 0.005 (0.012) Å above the plane.

The identical synthetic strategy employed using symmetrically substituted diamines results in a molecular species (c.f., Geiger, 2012). We have prepared an analogue of the title compound employing 1,2-diamino-4-cyanobenzene as the diamine. The structure of the compound is virtually the same (although not isomorphous), but all attempts to obtain a structure of publishable quality have failed. Whether or not the use of unsymmetrically-substituted 1,2-diaminobenzene is a prerequisite for the formation of a Zn MOF of this structureal type is yet to be determined. We are exploring other unsymmetrically substuted diamines in hopes of better understanding this phenomenon.

Related literature top

A recent review of crystalline metal-organic frameworks has been published by Dey et al. (2014). For a review of metal-organic frameworks in chemical sensors, see: Kreno et al. (2012) and for a review of metal-organic framework synthesis, see: Farha & Hupp (2010). For some other examples of zinc compounds with chain structures and bridging acetate ligands, see: Tan et al. (2011); Luo et al. (2011); Liu (2010); Hou et al. (2007a,b). For examples of monodentate coordinated 1,2-diaminobenzene complexes of zinc, see: Geiger (2012); Ovalle-Marroquín et al. (2002).

Experimental top

The title compound was prepared by the reaction of two equivalents of 1,2-diamino-4-chlorobenzene with zinc acetate dihydrate in refluxing ethanol. Slow evaporation of the solvent resulted in the formation of layers of extremely thin, colorless plates. The samples used for analysis were cut from carefully peeled apart layers.

Refinement top

Crystal data, data collection and structure refinement details are summarized in Table 1. As a result of the unsymmetrical nature of the 1,2-diamino-4-chlorobenzene ligand, the chloro substitutent was refined with a site occupancy factor of one-half in each of two positions. The ethanol solvate is rotationally disordered over two positions. It was refined with the C—C and C—O distances restrained to 1.54 and 1.43 Å, respectively, using DFIX. The anisotropic displacement parameters of the minor component were constrained to the same refined values of the major component using EADP. The refined occupancies of the major and minor contributors are 0.696 (11) and 0.304 (11), respectively. The maximum shift/error for the disorder occupancies and the coordinates and anisotropic displacement parameters of the ethanol solvate were 0.000. In the final set of refinement cycles, the occupancies of the major and minor components were fixed at 0.7 and 0.3, respectively. The maximum residual electron density (0.98 e3) and the deepest hole (-1.05 e3) are located 1.10 Å and 0.86 Å, respectively, from the Zn2 atom.

All hydrogen atoms except those associated with the disordered ethanol solvent molecule were observed in difference fourier maps. The carbon-bonded hydrogen atoms were refined using a riding model with a C—H distance of 0.98 Å for the methyl carbon atoms and 0.95 Å for the phenyl carbon atoms. The atomic coordinates for the nitrogen- and oxygen-bonded hydrogen atoms were refined using the restraints DFIX = 0.84 Å for O—H and 0.91 Å for N—H.

The methyl C—H and the O—H hydrogen atom isotropic displacement parameters were set using the approximation Uiso = 1.5Ueq. All other hydrogen atom isotropic displacement parameters were set using the approximation Uiso = 1.2Ueq.

Structure description top

Because of their large internal surface areas and uniformly structured cavities which small molecules may occupy, metal-organic frameworks (MOFs) are of inherent interest in areas such as gas storage, catalysis, chemical sensors and molecular separation (Dey et al., 2014; Kreno et al., 2012; Farha & Hupp, 2010). The title compound is an example of a one-dimensional MOF in which space between polymeric chains provides room for incorporation of small, non-covalently bonded molecules. To our knowledge, this compound is the first example of a mixed acetato and monodentetate diamine coordinated zinc compound with a one-dimensional chain structure.

The title compound exhibits a laddered-chain structure. The atom-labeling scheme for the basic repeating unit is shown in figure 1. Only the major contributor to the disordered ethanol solvate molecule is shown and only one of the two half-occupied sites of the chlorine substitutent is represented. (The other half-occupied chlorine is bound to C4.) The disorder of the chlorine results from a combination of a crystallographically-imposed inversion center between adjacent chlorodiaminobenzene ligands and the unsymmetrical substitution of the diamine ligand (i.e., Zn coordination of one of the nitrogen atoms puts the chlorine atom in one of the occupied sites and coordination of the other nitrogen atom puts the chlorine atom in the other partially occupied site).

Figure 2 shows a view of the polymeric chain in which the distorted octahedral and tetrahedral coordination spheres of the zinc ions are visible. Two asymmetric units make up the repeating motif, a Zn4(µ-OH)2(µ-acetato-κ2-O:O')4 core in which each of two distorted-octahedrally-coordinated Zn ions are bridged to a distorted-tetrahedrally-coordinated Zn ion by two acetate ligands and one hydroxide ligand. The octahedral coordination sphere is completed by a monodentate 1,2-diamino-4-chlorobenzene ligand and a third bridging acetato-κ2-O:O' ligand. The tetrahedral coordination sphere is completed by a bridging acetato-κ2-O:O' ligand.

Coordination to the bridging hydroxide ligands is decidedly unsymmetrical. The Zn1–O1 bond distances are 2.079 (5) Å and 2.147 (5) Å with the shorter bond distance corresponding to the hydroxide ligand trans to the diaminobenzene ligand (see Figure 2). The Zn2–O1 bond distance is 1.937 (5) Å. The Zn1–O1–Zn1i angle is 97.7 (2)o and the Zn2–O1–Zn1 and Zn2–O1–Zn1i angles are 127.8 (2)o and 101.7 (2)o. The tetrahedral coordination sphere is highly distorted. The O–Zn—O angles range from 94.7 (2)o to 130.8 (2)o, respectively.

Space between the chains is occupied by approximately two-fold rotationally-disordered ethanol molecules (see figure 3). Calculations using PLATON (Spek, 2009) show that the ethanol solvate molecule occupies a void with a volume of 224.1 Å3. Single crystals of the compound were subjected to vacuum at room temperature for extended periods followed by data collection. Subsequent structure solution revealed that the solvate remained trapped in the void. Attempts to heat crystals to 110oC under vacuum resulted in decomposition. Hydrogen bonds between the hydroxide and ligand major and minor components of the disordered ethanol solvate molecule are observed and may account for the tenacity of the ethanol binding. The HO···O distances are 2.807 (11) Å and 2.83 (2) Å and the O—H···O distances observed are 1.99 (3) and 2.03 (4) Å for the major and minor components of the disordered ethanol.

In addition to the hydrogen bonds involving the solvate molecule, N—H···O and N—H···N hydrogen bonding involving the uncoordinated amine group as the donor moiety and acetate ligands and the coordinated amine group as the acceptors are observed. Pertinent metrics involving these interactions are found in Table 1.

The benzene ring of the diamine ligand is planar with the atom having the largest deviation being C2, which sits 0.011 (6) Å above the plane. The two amine nitrogen atoms deviate only slightly from the benzene ring plane with N1 being 0.048 (13) Å and N2 being 0.005 (0.012) Å above the plane.

The identical synthetic strategy employed using symmetrically substituted diamines results in a molecular species (c.f., Geiger, 2012). We have prepared an analogue of the title compound employing 1,2-diamino-4-cyanobenzene as the diamine. The structure of the compound is virtually the same (although not isomorphous), but all attempts to obtain a structure of publishable quality have failed. Whether or not the use of unsymmetrically-substituted 1,2-diaminobenzene is a prerequisite for the formation of a Zn MOF of this structureal type is yet to be determined. We are exploring other unsymmetrically substuted diamines in hopes of better understanding this phenomenon.

A recent review of crystalline metal-organic frameworks has been published by Dey et al. (2014). For a review of metal-organic frameworks in chemical sensors, see: Kreno et al. (2012) and for a review of metal-organic framework synthesis, see: Farha & Hupp (2010). For some other examples of zinc compounds with chain structures and bridging acetate ligands, see: Tan et al. (2011); Luo et al. (2011); Liu (2010); Hou et al. (2007a,b). For examples of monodentate coordinated 1,2-diaminobenzene complexes of zinc, see: Geiger (2012); Ovalle-Marroquín et al. (2002).

Computing details top

Data collection: APEX2 (Bruker, 2013); cell refinement: SAINT (Bruker, 2013); data reduction: SAINT (Bruker, 2013); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2013 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009) and Mercury (Macrae et al., 2008); software used to prepare material for publication: publCIF (Westrip, 2010).

Figures top
[Figure 1] Fig. 1. Asymmetric unit of the title compound with the atom-labeling scheme. Only the major contributor to the disordered ethanol and one of the half-occupied Cl atoms are represented. Anisotropic displacement parameters are drawn at the 50% probability level.
[Figure 2] Fig. 2. A view of the polymeric chain parallel to [1 0 0]. The ethanol solvate and hydrogen atoms are not shown for clarity. Only one of the partially occupied Cl sites is represented. Symmetry codes: (i) -x+1, -y+1, -z+1; (ii) -x, -y+1, -z + 1; (iii) x + 1, y, z.
[Figure 3] Fig. 3. Packing diagram emphasizing the location of the ethanol solvent molecules with respect to the polymer chain. Only one of the partially occupied Cl sites is represented and only the major contributor to the disorder model is represented. Hydrogen atoms are omitted for clarity. Symmetry code: (i) -x+1, -y+1, -z+1.
Poly[[tris(µ2-acetato-κ2O:O')(4-chlorobenzene-1,2-diamine-κN)(µ3-hydroxido)dizinc] ethanol monosolvate] top
Crystal data top
[Zn2(C2H3O2)3(OH)(C6H7ClN2)]·C2H6OZ = 2
Mr = 513.53F(000) = 524
Triclinic, P1Dx = 1.664 Mg m3
a = 8.0769 (12) ÅMo Kα radiation, λ = 0.71073 Å
b = 10.8723 (19) ÅCell parameters from 2325 reflections
c = 12.909 (3) Åθ = 2.3–24.9°
α = 101.511 (6)°µ = 2.51 mm1
β = 96.399 (6)°T = 200 K
γ = 109.817 (5)°Plate, clear colourless
V = 1025.1 (3) Å30.60 × 0.40 × 0.02 mm
Data collection top
Bruker SMART X2S benchtop
diffractometer
3329 independent reflections
Radiation source: XOS X-beam microfocus source2403 reflections with I > 2σ(I)
Doubly curved silicon crystal monochromatorRint = 0.061
Detector resolution: 8.3330 pixels mm-1θmax = 25.1°, θmin = 2.7°
ω scansh = 88
Absorption correction: multi-scan
(SADABS; Bruker, 2013)
k = 1212
Tmin = 0.52, Tmax = 0.95l = 1513
6443 measured reflections
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.059Hydrogen site location: mixed
wR(F2) = 0.181H atoms treated by a mixture of independent and constrained refinement
S = 1.05 w = 1/[σ2(Fo2) + (0.0797P)2 + 5.5001P]
where P = (Fo2 + 2Fc2)/3
3329 reflections(Δ/σ)max < 0.001
280 parametersΔρmax = 0.98 e Å3
92 restraintsΔρmin = 1.05 e Å3
Crystal data top
[Zn2(C2H3O2)3(OH)(C6H7ClN2)]·C2H6Oγ = 109.817 (5)°
Mr = 513.53V = 1025.1 (3) Å3
Triclinic, P1Z = 2
a = 8.0769 (12) ÅMo Kα radiation
b = 10.8723 (19) ŵ = 2.51 mm1
c = 12.909 (3) ÅT = 200 K
α = 101.511 (6)°0.60 × 0.40 × 0.02 mm
β = 96.399 (6)°
Data collection top
Bruker SMART X2S benchtop
diffractometer
3329 independent reflections
Absorption correction: multi-scan
(SADABS; Bruker, 2013)
2403 reflections with I > 2σ(I)
Tmin = 0.52, Tmax = 0.95Rint = 0.061
6443 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.05992 restraints
wR(F2) = 0.181H atoms treated by a mixture of independent and constrained refinement
S = 1.05Δρmax = 0.98 e Å3
3329 reflectionsΔρmin = 1.05 e Å3
280 parameters
Special details top

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/UeqOcc. (<1)
Zn10.51291 (11)0.64882 (9)0.49816 (7)0.0220 (3)
Zn20.10138 (11)0.36887 (9)0.47758 (7)0.0235 (3)
O10.3290 (7)0.4519 (5)0.4368 (4)0.0206 (12)
H10.311 (11)0.419 (8)0.370 (2)0.031*
Cl10.1090 (8)0.5949 (6)0.0220 (4)0.0601 (15)0.5
Cl20.4363 (11)0.9055 (7)0.0139 (4)0.087 (2)0.5
N10.6409 (9)0.9892 (7)0.4111 (6)0.0293 (16)
H1A0.744 (6)1.047 (7)0.399 (6)0.035*
H1B0.682 (9)0.964 (8)0.469 (4)0.035*
N20.3623 (9)0.7554 (7)0.4280 (5)0.0247 (15)
H2A0.242 (3)0.719 (7)0.422 (6)0.03*
H2B0.396 (9)0.822 (6)0.490 (4)0.03*
C10.5200 (11)0.8997 (8)0.3188 (7)0.0273 (17)
C20.3789 (11)0.7860 (8)0.3266 (6)0.0232 (16)
C30.2564 (12)0.6995 (9)0.2341 (7)0.0340 (19)
H30.16290.62090.23950.041*
C40.2699 (14)0.7271 (11)0.1347 (8)0.050 (2)
H40.18540.66830.07210.06*0.5
C50.4063 (15)0.8402 (12)0.1269 (8)0.051 (2)
H50.41450.85980.05880.062*0.5
C60.5331 (14)0.9267 (10)0.2183 (8)0.045 (2)
H60.6281.00370.21170.054*
O710.0171 (7)0.1738 (5)0.3941 (5)0.0304 (14)
O720.7122 (7)0.8392 (5)0.5729 (5)0.0334 (14)
C70.1261 (11)0.1117 (8)0.3829 (7)0.030 (2)
C710.0524 (14)0.0317 (10)0.3175 (10)0.062 (4)
H71A0.0730.03480.24380.093*
H71B0.07670.0710.31610.093*
H71C0.11270.08340.34980.093*
O810.1322 (7)0.3856 (5)0.4406 (4)0.0243 (12)
O820.4119 (7)0.6770 (6)0.6442 (4)0.0260 (13)
C80.2514 (11)0.3399 (7)0.3538 (6)0.0213 (17)
C810.1933 (12)0.3104 (9)0.2482 (6)0.033 (2)
H20A0.29590.28290.1890.05*
H20B0.14740.23730.24510.05*
H20C0.09860.39170.24160.05*
O910.1070 (7)0.3617 (6)0.6295 (4)0.0265 (13)
O920.3883 (8)0.3702 (6)0.6454 (5)0.0360 (15)
C90.2520 (12)0.3665 (8)0.6821 (7)0.0277 (19)
C910.2600 (14)0.3703 (10)0.7993 (7)0.039 (2)
H91A0.3550.34010.82450.059*
H91B0.14450.31040.80940.059*
H91C0.28580.46290.84060.059*
OE10.7175 (15)0.6924 (13)0.7773 (8)0.062 (3)0.7
H1E10.62550.70080.74730.093*0.7
C1E10.711 (4)0.698 (2)0.8858 (13)0.103 (9)0.7
HE1A0.72710.61720.90350.124*0.7
HE1B0.59340.69750.90.124*0.7
C2E10.855 (4)0.821 (3)0.954 (2)0.126 (9)0.7
HE1C0.97120.82380.93610.189*0.7
HE1D0.85680.82221.02970.189*0.7
HE1E0.83390.90080.940.189*0.7
OE20.719 (4)0.591 (3)0.7894 (18)0.062 (3)0.3
H1E20.60740.54920.77420.093*0.3
C1E20.765 (11)0.688 (4)0.887 (3)0.103 (9)0.3
HE2A0.87240.68640.93160.124*0.3
HE2B0.66560.66650.92670.124*0.3
C2E20.803 (9)0.821 (4)0.869 (5)0.126 (9)0.3
HE2C0.93330.86750.87790.189*0.3
HE2D0.75770.87330.92180.189*0.3
HE2E0.74490.8130.79620.189*0.3
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Zn10.0152 (5)0.0202 (5)0.0324 (5)0.0073 (4)0.0046 (4)0.0096 (4)
Zn20.0130 (5)0.0251 (5)0.0337 (5)0.0071 (4)0.0057 (4)0.0100 (4)
O10.016 (3)0.024 (3)0.021 (3)0.008 (2)0.004 (2)0.003 (2)
Cl10.071 (4)0.065 (4)0.030 (2)0.018 (3)0.002 (2)0.003 (2)
Cl20.130 (6)0.073 (4)0.033 (3)0.008 (4)0.005 (3)0.020 (3)
N10.025 (4)0.024 (4)0.041 (4)0.006 (3)0.014 (3)0.015 (3)
N20.017 (3)0.024 (4)0.031 (4)0.006 (3)0.005 (3)0.007 (3)
C10.027 (4)0.025 (4)0.040 (4)0.014 (3)0.018 (3)0.017 (3)
C20.023 (4)0.021 (4)0.035 (4)0.015 (3)0.012 (3)0.012 (3)
C30.030 (4)0.037 (4)0.038 (4)0.016 (4)0.006 (3)0.011 (3)
C40.050 (5)0.058 (5)0.039 (4)0.021 (4)0.002 (4)0.009 (4)
C50.054 (5)0.064 (5)0.045 (4)0.021 (4)0.014 (4)0.032 (4)
C60.047 (5)0.046 (5)0.048 (4)0.013 (4)0.019 (4)0.026 (4)
O710.015 (3)0.019 (3)0.055 (4)0.004 (3)0.008 (2)0.009 (3)
O720.021 (3)0.017 (3)0.057 (4)0.002 (3)0.003 (3)0.010 (3)
C70.020 (5)0.020 (4)0.044 (5)0.002 (4)0.000 (4)0.010 (4)
C710.033 (6)0.028 (6)0.101 (9)0.010 (5)0.014 (6)0.019 (6)
O810.017 (3)0.026 (3)0.026 (3)0.008 (2)0.000 (2)0.003 (2)
O820.019 (3)0.030 (3)0.028 (3)0.010 (3)0.001 (2)0.004 (2)
C80.025 (4)0.016 (3)0.029 (3)0.012 (3)0.006 (3)0.011 (3)
C810.029 (5)0.043 (5)0.032 (4)0.019 (4)0.010 (4)0.010 (4)
O910.022 (3)0.030 (3)0.033 (3)0.012 (3)0.007 (2)0.014 (2)
O920.034 (4)0.048 (4)0.044 (3)0.025 (3)0.023 (3)0.023 (3)
C90.032 (5)0.018 (4)0.040 (5)0.015 (4)0.008 (4)0.010 (4)
C910.050 (6)0.041 (5)0.034 (5)0.023 (5)0.012 (4)0.012 (4)
OE10.057 (6)0.092 (8)0.044 (5)0.044 (6)0.001 (4)0.009 (5)
C1E10.103 (11)0.106 (10)0.102 (9)0.048 (6)0.009 (6)0.021 (6)
C2E10.135 (14)0.120 (13)0.110 (13)0.030 (11)0.007 (11)0.041 (11)
OE20.057 (6)0.092 (8)0.044 (5)0.044 (6)0.001 (4)0.009 (5)
C1E20.103 (11)0.106 (10)0.102 (9)0.048 (6)0.009 (6)0.021 (6)
C2E20.135 (14)0.120 (13)0.110 (13)0.030 (11)0.007 (11)0.041 (11)
Geometric parameters (Å, º) top
Zn1—O12.079 (5)C7—C711.494 (12)
Zn1—O92i2.098 (6)C71—H71A0.98
Zn1—O722.098 (5)C71—H71B0.98
Zn1—O822.143 (5)C71—H71C0.98
Zn1—O1i2.147 (5)O81—C81.281 (9)
Zn1—N22.185 (7)O82—C8iv1.251 (9)
Zn2—O11.937 (5)C8—O82iv1.251 (9)
Zn2—O811.971 (5)C8—C811.500 (11)
Zn2—O911.974 (5)C81—H20A0.98
Zn2—O712.017 (5)C81—H20B0.98
O1—Zn1i2.147 (5)C81—H20C0.98
O1—H10.84 (2)O91—C91.266 (10)
Cl1—C41.830 (11)O92—C91.237 (10)
Cl1—Cl1ii2.128 (12)O92—Zn1i2.098 (6)
Cl2—C51.752 (11)C9—C911.499 (12)
Cl2—Cl2iii2.086 (14)C91—H91A0.98
N1—C11.398 (11)C91—H91B0.98
N1—H1A0.91 (2)C91—H91C0.98
N1—H1B0.91 (2)OE1—C1E11.398 (15)
N2—C21.423 (10)OE1—H1E10.84
N2—H2A0.90 (2)C1E1—C2E11.474 (17)
N2—H2B0.90 (2)C1E1—HE1A0.99
C1—C61.394 (12)C1E1—HE1B0.99
C1—C21.400 (11)C2E1—HE1C0.98
C2—C31.395 (11)C2E1—HE1D0.98
C3—C41.383 (13)C2E1—HE1E0.98
C3—H30.95OE2—C1E21.39 (2)
C4—C51.375 (15)OE2—H1E20.84
C4—H40.95C1E2—C2E21.45 (3)
C5—C61.399 (14)C1E2—HE2A0.99
C5—H50.95C1E2—HE2B0.99
C6—H60.95C2E2—HE2C0.98
O71—C71.282 (10)C2E2—HE2D0.98
O72—C7i1.248 (10)C2E2—HE2E0.98
C7—O72i1.248 (10)
O1—Zn1—O92i88.2 (2)C7—O71—Zn2121.6 (5)
O1—Zn1—O72173.5 (2)C7i—O72—Zn1138.8 (6)
O92i—Zn1—O7294.2 (3)O72i—C7—O71124.4 (8)
O1—Zn1—O8293.6 (2)O72i—C7—C71117.7 (8)
O92i—Zn1—O82177.4 (2)O71—C7—C71117.8 (7)
O72—Zn1—O8284.2 (2)C7—C71—H71A109.5
O1—Zn1—O1i82.3 (2)C7—C71—H71B109.5
O92i—Zn1—O1i91.3 (2)H71A—C71—H71B109.5
O72—Zn1—O1i91.6 (2)C7—C71—H71C109.5
O82—Zn1—O1i90.8 (2)H71A—C71—H71C109.5
O1—Zn1—N299.1 (2)H71B—C71—H71C109.5
O92i—Zn1—N286.4 (2)C8—O81—Zn2132.6 (5)
O72—Zn1—N287.1 (2)C8iv—O82—Zn1123.4 (5)
O82—Zn1—N291.5 (2)O82iv—C8—O81121.4 (7)
O1i—Zn1—N2177.3 (2)O82iv—C8—C81120.2 (7)
O1—Zn2—O81130.8 (2)O81—C8—C81118.4 (7)
O1—Zn2—O91117.1 (2)C8—C81—H20A109.5
O81—Zn2—O91101.1 (2)C8—C81—H20B109.5
O1—Zn2—O71103.6 (2)H20A—C81—H20B109.5
O81—Zn2—O7194.7 (2)C8—C81—H20C109.5
O91—Zn2—O71104.5 (2)H20A—C81—H20C109.5
Zn2—O1—Zn1127.8 (2)H20B—C81—H20C109.5
Zn2—O1—Zn1i101.7 (2)C9—O91—Zn2117.2 (5)
Zn1—O1—Zn1i97.7 (2)C9—O92—Zn1i143.2 (6)
Zn2—O1—H1105 (6)O92—C9—O91125.6 (8)
Zn1—O1—H1117 (6)O92—C9—C91117.3 (8)
Zn1i—O1—H1103 (6)O91—C9—C91117.1 (8)
C4—Cl1—Cl1ii144.8 (6)C9—C91—H91A109.5
C5—Cl2—Cl2iii136.3 (6)C9—C91—H91B109.5
C1—N1—H1A115 (5)H91A—C91—H91B109.5
C1—N1—H1B125 (5)C9—C91—H91C109.5
H1A—N1—H1B102 (4)H91A—C91—H91C109.5
C2—N2—Zn1122.9 (5)H91B—C91—H91C109.5
C2—N2—H2A102 (5)C1E1—OE1—H1E1109.5
Zn1—N2—H2A115 (6)OE1—C1E1—C2E1109.4 (18)
C2—N2—H2B121 (6)OE1—C1E1—HE1A109.8
Zn1—N2—H2B92 (5)C2E1—C1E1—HE1A109.8
H2A—N2—H2B102 (4)OE1—C1E1—HE1B109.8
C6—C1—N1120.2 (8)C2E1—C1E1—HE1B109.8
C6—C1—C2119.1 (8)HE1A—C1E1—HE1B108.2
N1—C1—C2120.6 (7)C1E1—C2E1—HE1C109.5
C3—C2—C1120.0 (8)C1E1—C2E1—HE1D109.5
C3—C2—N2119.5 (7)HE1C—C2E1—HE1D109.5
C1—C2—N2120.5 (7)C1E1—C2E1—HE1E109.5
C4—C3—C2120.6 (9)HE1C—C2E1—HE1E109.5
C4—C3—H3119.7HE1D—C2E1—HE1E109.5
C2—C3—H3119.7C1E2—OE2—H1E2109.5
C5—C4—C3119.7 (9)OE2—C1E2—C2E2111 (3)
C5—C4—Cl1126.1 (8)OE2—C1E2—HE2A109.5
C3—C4—Cl1114.0 (8)C2E2—C1E2—HE2A109.5
C5—C4—H4120.2OE2—C1E2—HE2B109.5
C3—C4—H4120.2C2E2—C1E2—HE2B109.5
C4—C5—C6120.8 (9)HE2A—C1E2—HE2B108.1
C4—C5—Cl2127.8 (9)C1E2—C2E2—HE2C109.5
C6—C5—Cl2111.2 (8)C1E2—C2E2—HE2D109.5
C4—C5—H5119.6HE2C—C2E2—HE2D109.5
C6—C5—H5119.6C1E2—C2E2—HE2E109.5
C1—C6—C5119.9 (9)HE2C—C2E2—HE2E109.5
C1—C6—H6120.1HE2D—C2E2—HE2E109.5
C5—C6—H6120.1
Symmetry codes: (i) x+1, y+1, z+1; (ii) x, y+1, z; (iii) x+1, y+2, z; (iv) x, y+1, z+1.
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
O1—H1···OE1i0.84 (2)1.99 (3)2.807 (11)166 (8)
O1—H1···OE2i0.84 (2)2.03 (4)2.83 (2)160 (8)
N2—H2A···O81iv0.90 (2)2.38 (7)2.914 (9)118 (6)
N2—H2B···N1v0.91 (6)2.32 (5)3.128 (10)148 (7)
N1—H1A···O71vi0.91 (7)2.19 (3)3.082 (9)169 (6)
N1—H1B···O720.91 (6)2.14 (7)3.013 (9)160 (7)
OE1—H1E1···O820.841.972.780 (11)163
OE2—H1E2···O920.842.323.02 (3)140
Symmetry codes: (i) x+1, y+1, z+1; (iv) x, y+1, z+1; (v) x+1, y+2, z+1; (vi) x+1, y+1, z.
Hydrogen-bond geometry (Å, º) top
D—H···AD—HH···AD···AD—H···A
O1—H1···OE1i0.84 (2)1.99 (3)2.807 (11)166 (8)
O1—H1···OE2i0.84 (2)2.03 (4)2.83 (2)160 (8)
N2—H2A···O81ii0.90 (2)2.38 (7)2.914 (9)118 (6)
N2—H2B···N1iii0.91 (6)2.32 (5)3.128 (10)148 (7)
N1—H1A···O71iv0.91 (7)2.19 (3)3.082 (9)169 (6)
OE1—H1E1···O820.841.972.780 (11)163
OE2—H1E2···O920.842.323.02 (3)140
Symmetry codes: (i) x+1, y+1, z+1; (ii) x, y+1, z+1; (iii) x+1, y+2, z+1; (iv) x+1, y+1, z.
 

Acknowledgements

This work was supported by a Congressionally directed grant from the US Department of Education (grant No. P116Z100020) for the X-ray diffractometer and a grant from the Geneseo Foundation.

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