In the title compound, poly[[triaqua{μ4-2-[4,6-bis(carboxymethylsulfanyl)-1,3,5-triazin-2-ylsulfanyl]acetato}{μ2-2-[4,6-bis(carboxymethylsulfanyl)-1,3,5-triazin-2-ylsulfanyl]acetato}barium(II)] monohydrate], {[Ba(C9H8N3O6S3)2(H2O)3]·H2O}n, each BaII atom is nine-coordinated by six O atoms from carboxylate groups of four different 2-[4,6-bis(carboxymethylsulfanyl)-1,3,5-triazin-2-ylsulfanyl]acetate ligands and three O atoms from water molecules. The triazine ligand is partially deprotonated, as verified by intermolecular hydrogen-bonding parameters, and adopts μ2-η1:η1 and μ4-η1:η1:η2 coordination modes to connect the BaII centres, forming a novel double-layered structure. Topological analysis indicates that the whole structure is a novel (4,6)-connected net, considering the ligands and BaII centres as four- and six-connected nodes, respectively.
Supporting information
CCDC reference: 804117
BaCl2.2H2O (0.026 g, 0.1 mmol) and
2,2',2''-[1,3,5-triazine-2,4,6-triyltris(sulfanediyl)]triacetic acid (0.069 g,
0.2 mmol) were dissolved in a solution of water and pyridine (5 ml/0.10 ml) at
room temperature and colourless crystals of (I) were formed in 67% yield after
several days. Elemental analysis: calculated for C18H24O16N6S6Ba
(Mr = 910.13): C 23.75, H 2.66, N 9.23%; found: C 23.61, H 2.63, N
9.28%. FT–IR (KBr pellet, ν, cm-1): 3425 (br), 1626 (m),
1480 (s), 1388 (m), 1268 (m), 1235 (w), 1119
(w), 1051 (w), 905 (w), 848 (w), 787 (w).
All H atoms were placed in positions derived from the difference Fourier maps.
For the balance of the total charge of the compound, half-occupancies were
assigned to atoms H2 and H5; a high correlation (0.99) is noted for the the
x and z cooordinates of H2. The H atoms on atoms O4W, O2
and O9 were restrained with O—H = 0.82 (1) Å. All H atoms bound to O atoms
were refined with Uiso(H) = 1.5Ueq(O), and all C-bound H
atoms were refined with Uiso(H) = 1.2Ueq(C).
Data collection: SMART (Bruker, 2000); cell refinement: SMART (Bruker, 2000); data reduction: SAINT (Bruker, 2000); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).
poly[[triaqua{µ
4-2-[4,6-bis(carboxymethylsulfanyl)-1,3,5-triazin-2-ylsulfanyl]acetato}{µ
2-2-[4,6-bis(carboxymethylsulfanyl)-1,3,5-triazin-2-ylsulfanyl]acetato}barium(II)] monohydrate]
top
Crystal data top
[Ba(C9H8N3O6S3)2(H2O)3]·H2O | F(000) = 1816 |
Mr = 910.13 | Dx = 1.929 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 3762 reflections |
a = 12.0121 (15) Å | θ = 2.2–26.5° |
b = 31.327 (4) Å | µ = 1.75 mm−1 |
c = 8.8522 (11) Å | T = 298 K |
β = 109.794 (2)° | Block, colourless |
V = 3134.3 (7) Å3 | 0.27 × 0.26 × 0.25 mm |
Z = 4 | |
Data collection top
Bruker SMART APEX CCD area-detector diffractometer | 6052 independent reflections |
Radiation source: fine-focus sealed tube | 4342 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.062 |
ϕ and ω scans | θmax = 26.0°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −14→14 |
Tmin = 0.650, Tmax = 0.669 | k = −31→38 |
15959 measured reflections | l = −10→9 |
Refinement top
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.033 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.052 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.84 | w = 1/[σ2(Fo2)] where P = (Fo2 + 2Fc2)/3 |
6052 reflections | (Δ/σ)max = 0.001 |
499 parameters | Δρmax = 0.58 e Å−3 |
4 restraints | Δρmin = −0.56 e Å−3 |
Crystal data top
[Ba(C9H8N3O6S3)2(H2O)3]·H2O | V = 3134.3 (7) Å3 |
Mr = 910.13 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 12.0121 (15) Å | µ = 1.75 mm−1 |
b = 31.327 (4) Å | T = 298 K |
c = 8.8522 (11) Å | 0.27 × 0.26 × 0.25 mm |
β = 109.794 (2)° | |
Data collection top
Bruker SMART APEX CCD area-detector diffractometer | 6052 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4342 reflections with I > 2σ(I) |
Tmin = 0.650, Tmax = 0.669 | Rint = 0.062 |
15959 measured reflections | |
Refinement top
R[F2 > 2σ(F2)] = 0.033 | 4 restraints |
wR(F2) = 0.052 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.84 | Δρmax = 0.58 e Å−3 |
6052 reflections | Δρmin = −0.56 e Å−3 |
499 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 > 2sigma(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 | x | y | z | Uiso*/Ueq | Occ. (<1) |
Ba1 | 0.077157 (18) | 0.153048 (7) | 1.03108 (3) | 0.02518 (7) | |
N1 | 0.3993 (2) | 0.06201 (9) | 0.7553 (3) | 0.0235 (7) | |
N2 | 0.5766 (2) | 0.05182 (8) | 0.6942 (3) | 0.0220 (7) | |
N3 | 0.4753 (2) | −0.00826 (8) | 0.7520 (4) | 0.0258 (7) | |
N4 | 0.5510 (2) | 0.19562 (9) | 1.1397 (3) | 0.0213 (7) | |
N5 | 0.6286 (2) | 0.26254 (8) | 1.2581 (3) | 0.0242 (7) | |
N6 | 0.7235 (2) | 0.19776 (9) | 1.3776 (3) | 0.0232 (7) | |
O1 | 0.0682 (2) | 0.06856 (8) | 0.9643 (3) | 0.0441 (8) | |
O2 | 0.0784 (2) | −0.00142 (8) | 0.9373 (3) | 0.0327 (7) | |
H2 | 0.036 (6) | −0.002 (3) | 0.993 (9) | 0.049* | 0.50 |
O3 | 0.7295 (2) | 0.11543 (9) | 0.9399 (3) | 0.0419 (8) | |
H3 | 0.786 (3) | 0.1089 (13) | 1.014 (5) | 0.063* | |
O4 | 0.8463 (2) | 0.13556 (8) | 0.8035 (3) | 0.0411 (7) | |
O5 | 0.9306 (2) | 0.01671 (9) | 0.5579 (4) | 0.0350 (7) | |
H5 | 0.964 (7) | 0.004 (3) | 0.514 (14) | 0.052* | 0.50 |
O6 | 0.8644 (2) | −0.04850 (8) | 0.5818 (3) | 0.0397 (7) | |
O7 | 0.3066 (2) | 0.12910 (8) | 1.0594 (3) | 0.0363 (7) | |
O8 | 0.4237 (2) | 0.12727 (9) | 1.3163 (3) | 0.0392 (8) | |
H8 | 0.365 (3) | 0.1298 (13) | 1.336 (5) | 0.059* | |
O9 | 0.2043 (2) | 0.22045 (8) | 0.6214 (3) | 0.0298 (7) | |
H9 | 0.156 (2) | 0.2331 (10) | 0.544 (3) | 0.045* | |
O10 | 0.26460 (19) | 0.28645 (7) | 0.7069 (3) | 0.0323 (7) | |
O11 | 1.01939 (19) | 0.29700 (8) | 1.7561 (3) | 0.0336 (7) | |
O12 | 1.05917 (19) | 0.23723 (7) | 1.9009 (3) | 0.0279 (6) | |
O1W | −0.0663 (3) | 0.09963 (9) | 1.1659 (4) | 0.0412 (8) | |
H1WA | −0.043 (4) | 0.0759 (12) | 1.161 (5) | 0.062* | |
H1WB | −0.066 (4) | 0.1083 (13) | 1.253 (5) | 0.062* | |
O2W | 0.1031 (3) | 0.14914 (10) | 0.7358 (4) | 0.0499 (9) | |
H2WA | 0.129 (4) | 0.1655 (15) | 0.711 (6) | 0.075* | |
H2WB | 0.062 (4) | 0.1360 (14) | 0.660 (5) | 0.075* | |
O3W | 0.2090 (3) | 0.13025 (10) | 1.3599 (4) | 0.0423 (8) | |
H3WA | 0.192 (3) | 0.1049 (12) | 1.388 (5) | 0.063* | |
H3WB | 0.195 (4) | 0.1451 (13) | 1.422 (5) | 0.063* | |
O4W | 0.9361 (3) | 0.10455 (10) | 0.4901 (5) | 0.0645 (10) | |
H4WA | 0.939 (4) | 0.0787 (4) | 0.504 (6) | 0.097* | |
H4WB | 0.885 (3) | 0.1169 (15) | 0.515 (6) | 0.097* | |
S1 | 0.28504 (8) | −0.00351 (3) | 0.83175 (12) | 0.0302 (2) | |
S2 | 0.49911 (7) | 0.13120 (3) | 0.70131 (11) | 0.0247 (2) | |
S3 | 0.66682 (8) | −0.02503 (3) | 0.68310 (13) | 0.0320 (3) | |
S4 | 0.64958 (8) | 0.12200 (3) | 1.26428 (11) | 0.0259 (2) | |
S5 | 0.45008 (7) | 0.26820 (3) | 0.99492 (11) | 0.0256 (2) | |
S6 | 0.80576 (8) | 0.27281 (3) | 1.51962 (11) | 0.0271 (2) | |
C1 | 0.3965 (3) | 0.01983 (11) | 0.7725 (4) | 0.0232 (9) | |
C2 | 0.4920 (3) | 0.07579 (10) | 0.7174 (4) | 0.0207 (8) | |
C3 | 0.5630 (3) | 0.01004 (11) | 0.7133 (4) | 0.0230 (9) | |
C4 | 0.1986 (3) | 0.04358 (12) | 0.8377 (5) | 0.0312 (10) | |
H4A | 0.249 (3) | 0.0624 (10) | 0.890 (4) | 0.037* | |
H4B | 0.155 (3) | 0.0484 (10) | 0.727 (4) | 0.037* | |
C5 | 0.1098 (3) | 0.03703 (12) | 0.9203 (4) | 0.0268 (9) | |
C6 | 0.6385 (3) | 0.13659 (12) | 0.6696 (5) | 0.0249 (9) | |
H6A | 0.640 (3) | 0.1165 (10) | 0.580 (4) | 0.030* | |
H6B | 0.641 (3) | 0.1652 (10) | 0.630 (4) | 0.030* | |
C7 | 0.7488 (3) | 0.12912 (11) | 0.8118 (4) | 0.0269 (9) | |
C8 | 0.7681 (3) | 0.01276 (12) | 0.6453 (5) | 0.0314 (10) | |
H8A | 0.724 (3) | 0.0320 (10) | 0.573 (4) | 0.038* | |
H8B | 0.808 (3) | 0.0265 (10) | 0.740 (4) | 0.038* | |
C9 | 0.8596 (3) | −0.00955 (13) | 0.5910 (4) | 0.0275 (9) | |
C10 | 0.6396 (3) | 0.17752 (10) | 1.2589 (4) | 0.0194 (8) | |
C11 | 0.5529 (3) | 0.23844 (11) | 1.1456 (4) | 0.0207 (8) | |
C12 | 0.7108 (3) | 0.23999 (11) | 1.3711 (4) | 0.0215 (8) | |
C13 | 0.5078 (3) | 0.10894 (12) | 1.1190 (4) | 0.0240 (9) | |
H13A | 0.501 (3) | 0.1199 (10) | 1.018 (4) | 0.029* | |
H13B | 0.509 (3) | 0.0783 (10) | 1.113 (4) | 0.029* | |
C14 | 0.4027 (3) | 0.12344 (11) | 1.1606 (5) | 0.0258 (9) | |
C15 | 0.3621 (3) | 0.22688 (11) | 0.8658 (4) | 0.0240 (9) | |
H15A | 0.413 (3) | 0.2094 (10) | 0.832 (4) | 0.029* | |
H15B | 0.323 (3) | 0.2088 (10) | 0.917 (4) | 0.029* | |
C16 | 0.2723 (3) | 0.24826 (12) | 0.7236 (4) | 0.0216 (8) | |
C17 | 0.9051 (3) | 0.23452 (12) | 1.6485 (5) | 0.0258 (9) | |
H17A | 0.867 (3) | 0.2166 (10) | 1.691 (4) | 0.031* | |
H17B | 0.943 (3) | 0.2172 (10) | 1.582 (4) | 0.031* | |
C18 | 1.0014 (3) | 0.25896 (11) | 1.7767 (4) | 0.0216 (8) | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
Ba1 | 0.02178 (12) | 0.02170 (12) | 0.02929 (14) | −0.00161 (10) | 0.00503 (10) | −0.00191 (11) |
N1 | 0.0187 (16) | 0.0257 (18) | 0.0276 (18) | −0.0011 (13) | 0.0100 (14) | −0.0012 (14) |
N2 | 0.0181 (15) | 0.0197 (17) | 0.0292 (18) | −0.0011 (13) | 0.0091 (14) | −0.0004 (14) |
N3 | 0.0217 (16) | 0.0221 (17) | 0.039 (2) | −0.0001 (13) | 0.0176 (15) | 0.0001 (15) |
N4 | 0.0172 (15) | 0.0233 (18) | 0.0186 (17) | −0.0001 (13) | −0.0005 (13) | 0.0042 (14) |
N5 | 0.0170 (15) | 0.0271 (18) | 0.0203 (17) | −0.0010 (13) | −0.0046 (14) | 0.0012 (14) |
N6 | 0.0182 (15) | 0.0264 (18) | 0.0189 (17) | −0.0017 (13) | −0.0017 (14) | 0.0012 (14) |
O1 | 0.0462 (16) | 0.0222 (15) | 0.081 (2) | −0.0023 (13) | 0.0433 (17) | −0.0095 (15) |
O2 | 0.0360 (17) | 0.0242 (15) | 0.047 (2) | −0.0029 (13) | 0.0262 (14) | 0.0006 (14) |
O3 | 0.0289 (17) | 0.067 (2) | 0.0244 (18) | −0.0095 (15) | 0.0020 (13) | 0.0076 (15) |
O4 | 0.0211 (14) | 0.0577 (19) | 0.0456 (19) | −0.0036 (13) | 0.0130 (14) | 0.0083 (15) |
O5 | 0.0292 (16) | 0.0334 (18) | 0.049 (2) | −0.0019 (13) | 0.0224 (14) | −0.0023 (15) |
O6 | 0.0414 (16) | 0.0243 (16) | 0.061 (2) | 0.0025 (13) | 0.0273 (15) | −0.0010 (15) |
O7 | 0.0226 (14) | 0.0460 (18) | 0.0305 (16) | 0.0015 (12) | −0.0038 (13) | −0.0071 (13) |
O8 | 0.0268 (16) | 0.063 (2) | 0.0260 (17) | −0.0014 (15) | 0.0073 (14) | −0.0022 (15) |
O9 | 0.0272 (15) | 0.0253 (15) | 0.0236 (16) | −0.0030 (12) | −0.0089 (12) | 0.0024 (12) |
O10 | 0.0315 (14) | 0.0187 (14) | 0.0327 (16) | 0.0018 (12) | −0.0073 (12) | 0.0048 (12) |
O11 | 0.0314 (15) | 0.0259 (15) | 0.0319 (16) | −0.0080 (12) | −0.0046 (13) | 0.0041 (13) |
O12 | 0.0259 (14) | 0.0281 (15) | 0.0176 (14) | 0.0000 (11) | −0.0085 (12) | 0.0053 (12) |
O1W | 0.0361 (16) | 0.044 (2) | 0.042 (2) | 0.0083 (15) | 0.0121 (16) | 0.0017 (17) |
O2W | 0.058 (2) | 0.049 (2) | 0.040 (2) | −0.0214 (16) | 0.0142 (17) | −0.0044 (17) |
O3W | 0.0403 (17) | 0.048 (2) | 0.043 (2) | −0.0044 (16) | 0.0190 (15) | 0.0032 (17) |
O4W | 0.059 (2) | 0.055 (2) | 0.063 (2) | −0.008 (2) | −0.0011 (19) | −0.001 (2) |
S1 | 0.0263 (5) | 0.0238 (5) | 0.0475 (7) | −0.0022 (4) | 0.0218 (5) | 0.0003 (5) |
S2 | 0.0240 (5) | 0.0214 (5) | 0.0303 (6) | 0.0014 (4) | 0.0115 (4) | 0.0022 (4) |
S3 | 0.0269 (5) | 0.0239 (6) | 0.0525 (7) | 0.0036 (4) | 0.0229 (5) | 0.0013 (5) |
S4 | 0.0232 (5) | 0.0251 (5) | 0.0244 (6) | 0.0046 (4) | 0.0015 (4) | 0.0022 (4) |
S5 | 0.0225 (5) | 0.0230 (5) | 0.0218 (5) | 0.0008 (4) | −0.0049 (4) | 0.0015 (4) |
S6 | 0.0229 (5) | 0.0263 (5) | 0.0223 (5) | −0.0022 (4) | −0.0050 (4) | 0.0006 (4) |
C1 | 0.0190 (19) | 0.025 (2) | 0.027 (2) | −0.0012 (16) | 0.0095 (17) | −0.0010 (18) |
C2 | 0.0192 (19) | 0.023 (2) | 0.017 (2) | 0.0000 (16) | 0.0035 (16) | −0.0003 (16) |
C3 | 0.0201 (19) | 0.023 (2) | 0.025 (2) | 0.0024 (16) | 0.0064 (17) | 0.0012 (17) |
C4 | 0.028 (2) | 0.026 (2) | 0.043 (3) | −0.0044 (18) | 0.017 (2) | −0.003 (2) |
C5 | 0.022 (2) | 0.024 (2) | 0.035 (2) | −0.0021 (17) | 0.0109 (18) | 0.0001 (19) |
C6 | 0.025 (2) | 0.022 (2) | 0.030 (2) | −0.0028 (17) | 0.0130 (18) | 0.0032 (18) |
C7 | 0.031 (2) | 0.020 (2) | 0.029 (2) | −0.0008 (17) | 0.010 (2) | −0.0049 (18) |
C8 | 0.028 (2) | 0.029 (2) | 0.044 (3) | 0.0027 (18) | 0.019 (2) | −0.003 (2) |
C9 | 0.0166 (19) | 0.043 (3) | 0.022 (2) | −0.0007 (18) | 0.0061 (17) | −0.003 (2) |
C10 | 0.0212 (19) | 0.024 (2) | 0.015 (2) | 0.0009 (16) | 0.0083 (16) | 0.0026 (16) |
C11 | 0.0152 (18) | 0.030 (2) | 0.015 (2) | 0.0026 (16) | 0.0034 (16) | 0.0045 (17) |
C12 | 0.0160 (19) | 0.033 (2) | 0.014 (2) | −0.0068 (16) | 0.0030 (16) | 0.0004 (17) |
C13 | 0.029 (2) | 0.020 (2) | 0.019 (2) | 0.0009 (17) | 0.0028 (18) | −0.0004 (18) |
C14 | 0.032 (2) | 0.020 (2) | 0.024 (2) | −0.0060 (17) | 0.0071 (19) | −0.0033 (17) |
C15 | 0.025 (2) | 0.020 (2) | 0.018 (2) | 0.0004 (16) | −0.0030 (17) | 0.0027 (17) |
C16 | 0.0150 (19) | 0.029 (2) | 0.019 (2) | −0.0020 (16) | 0.0040 (16) | −0.0003 (18) |
C17 | 0.025 (2) | 0.024 (2) | 0.020 (2) | −0.0014 (17) | −0.0015 (18) | 0.0041 (18) |
C18 | 0.0128 (18) | 0.028 (2) | 0.021 (2) | 0.0006 (16) | 0.0018 (16) | −0.0016 (18) |
Geometric parameters (Å, º) top
Ba1—O1 | 2.706 (2) | O12—C18 | 1.280 (4) |
Ba1—O2W | 2.738 (4) | O12—Ba1viii | 2.857 (2) |
Ba1—O7 | 2.784 (2) | O1W—H1WA | 0.80 (4) |
Ba1—O11i | 2.799 (3) | O1W—H1WB | 0.82 (4) |
Ba1—O12ii | 2.857 (2) | O2W—H2WA | 0.67 (4) |
Ba1—O4iii | 2.875 (2) | O2W—H2WB | 0.80 (4) |
Ba1—O3W | 2.893 (3) | O3W—H3WA | 0.88 (4) |
Ba1—O1W | 2.931 (3) | O3W—H3WB | 0.78 (4) |
Ba1—O10iv | 2.951 (2) | O4W—H4WA | 0.818 (10) |
N1—C1 | 1.332 (4) | O4W—H4WB | 0.813 (10) |
N1—C2 | 1.339 (4) | S1—C1 | 1.754 (3) |
N2—C2 | 1.334 (4) | S1—C4 | 1.815 (4) |
N2—C3 | 1.337 (4) | S2—C2 | 1.746 (3) |
N3—C3 | 1.342 (4) | S2—C6 | 1.797 (4) |
N3—C1 | 1.349 (4) | S3—C3 | 1.749 (3) |
N4—C11 | 1.342 (4) | S3—C8 | 1.808 (4) |
N4—C10 | 1.344 (4) | S4—C10 | 1.743 (3) |
N5—C11 | 1.333 (4) | S4—C13 | 1.800 (4) |
N5—C12 | 1.344 (4) | S5—C11 | 1.748 (3) |
N6—C12 | 1.331 (4) | S5—C15 | 1.812 (4) |
N6—C10 | 1.343 (4) | S6—C12 | 1.753 (3) |
O1—C5 | 1.228 (4) | S6—C17 | 1.801 (4) |
O2—C5 | 1.286 (4) | C4—C5 | 1.497 (5) |
O2—H2 | 0.822 (10) | C4—H4A | 0.86 (3) |
O3—C7 | 1.305 (4) | C4—H4B | 0.95 (3) |
O3—H3 | 0.79 (4) | C6—C7 | 1.505 (5) |
O4—C7 | 1.215 (4) | C6—H6A | 1.02 (3) |
O4—Ba1v | 2.875 (2) | C6—H6B | 0.97 (3) |
O5—C9 | 1.288 (4) | C8—C9 | 1.511 (5) |
O5—H5 | 0.75 (7) | C8—H8A | 0.91 (3) |
O6—C9 | 1.226 (4) | C8—H8B | 0.92 (3) |
O7—C14 | 1.211 (4) | C13—C14 | 1.499 (5) |
O8—C14 | 1.320 (4) | C13—H13A | 0.93 (3) |
O8—H8 | 0.78 (4) | C13—H13B | 0.96 (3) |
O9—C16 | 1.320 (4) | C15—C16 | 1.509 (4) |
O9—H9 | 0.832 (10) | C15—H15A | 0.94 (3) |
O10—C16 | 1.205 (4) | C15—H15B | 0.95 (3) |
O10—Ba1vi | 2.951 (2) | C17—C18 | 1.524 (5) |
O11—C18 | 1.235 (4) | C17—H17A | 0.88 (3) |
O11—Ba1vii | 2.799 (3) | C17—H17B | 1.01 (3) |
| | | |
O1—Ba1—O2W | 75.92 (9) | N3—C1—S1 | 114.2 (3) |
O1—Ba1—O7 | 73.79 (7) | N2—C2—N1 | 126.8 (3) |
O2W—Ba1—O7 | 69.18 (9) | N2—C2—S2 | 119.1 (3) |
O1—Ba1—O11i | 134.52 (8) | N1—C2—S2 | 114.1 (3) |
O2W—Ba1—O11i | 147.17 (9) | N2—C3—N3 | 126.2 (3) |
O7—Ba1—O11i | 124.26 (7) | N2—C3—S3 | 118.2 (3) |
O1—Ba1—O12ii | 145.36 (8) | N3—C3—S3 | 115.6 (3) |
O2W—Ba1—O12ii | 70.95 (9) | C5—C4—S1 | 114.3 (3) |
O7—Ba1—O12ii | 102.85 (7) | C5—C4—H4A | 109 (2) |
O11i—Ba1—O12ii | 76.58 (7) | S1—C4—H4A | 105 (2) |
O1—Ba1—O4iii | 72.73 (8) | C5—C4—H4B | 107 (2) |
O2W—Ba1—O4iii | 73.58 (9) | S1—C4—H4B | 103 (2) |
O7—Ba1—O4iii | 134.61 (7) | H4A—C4—H4B | 119 (3) |
O11i—Ba1—O4iii | 101.09 (7) | O1—C5—O2 | 123.3 (4) |
O12ii—Ba1—O4iii | 88.28 (7) | O1—C5—C4 | 118.6 (3) |
O1—Ba1—O3W | 86.90 (8) | O2—C5—C4 | 118.1 (3) |
O2W—Ba1—O3W | 138.50 (10) | C7—C6—S2 | 117.2 (3) |
O7—Ba1—O3W | 69.81 (8) | C7—C6—H6A | 108.2 (17) |
O11i—Ba1—O3W | 66.74 (7) | S2—C6—H6A | 109.2 (18) |
O12ii—Ba1—O3W | 125.08 (7) | C7—C6—H6B | 108.5 (18) |
O4iii—Ba1—O3W | 136.68 (8) | S2—C6—H6B | 107.0 (19) |
O1—Ba1—O1W | 62.95 (8) | H6A—C6—H6B | 106 (3) |
O2W—Ba1—O1W | 129.50 (8) | O4—C7—O3 | 124.4 (3) |
O7—Ba1—O1W | 120.67 (8) | O4—C7—C6 | 121.1 (4) |
O11i—Ba1—O1W | 73.00 (8) | O3—C7—C6 | 114.4 (3) |
O12ii—Ba1—O1W | 135.80 (7) | C9—C8—S3 | 111.3 (3) |
O4iii—Ba1—O1W | 67.40 (8) | C9—C8—H8A | 114 (2) |
O3W—Ba1—O1W | 69.29 (9) | S3—C8—H8A | 107 (2) |
O1—Ba1—O10iv | 135.23 (7) | C9—C8—H8B | 107 (2) |
O2W—Ba1—O10iv | 102.65 (8) | S3—C8—H8B | 108 (2) |
O7—Ba1—O10iv | 64.57 (7) | H8A—C8—H8B | 109 (3) |
O11i—Ba1—O10iv | 66.07 (7) | O6—C9—O5 | 124.8 (3) |
O12ii—Ba1—O10iv | 63.89 (6) | O6—C9—C8 | 122.5 (3) |
O4iii—Ba1—O10iv | 150.98 (7) | O5—C9—C8 | 112.7 (3) |
O3W—Ba1—O10iv | 64.40 (8) | N6—C10—N4 | 126.9 (3) |
O1W—Ba1—O10iv | 126.93 (8) | N6—C10—S4 | 115.0 (2) |
C1—N1—C2 | 113.8 (3) | N4—C10—S4 | 118.1 (2) |
C2—N2—C3 | 113.6 (3) | N5—C11—N4 | 126.4 (3) |
C3—N3—C1 | 113.8 (3) | N5—C11—S5 | 113.3 (2) |
C11—N4—C10 | 113.1 (3) | N4—C11—S5 | 120.3 (2) |
C11—N5—C12 | 113.7 (3) | N6—C12—N5 | 126.8 (3) |
C12—N6—C10 | 113.0 (3) | N6—C12—S6 | 121.0 (2) |
C5—O1—Ba1 | 149.9 (2) | N5—C12—S6 | 112.2 (3) |
C5—O2—H2 | 111 (7) | C14—C13—S4 | 115.3 (3) |
C7—O3—H3 | 117 (3) | C14—C13—H13A | 108 (2) |
C7—O4—Ba1v | 135.3 (3) | S4—C13—H13A | 110.9 (19) |
C9—O5—H5 | 107 (9) | C14—C13—H13B | 110.5 (19) |
C14—O7—Ba1 | 140.6 (3) | S4—C13—H13B | 103.7 (18) |
C14—O8—H8 | 112 (3) | H13A—C13—H13B | 108 (3) |
C16—O9—H9 | 110 (2) | O7—C14—O8 | 123.8 (4) |
C16—O10—Ba1vi | 135.7 (2) | O7—C14—C13 | 122.3 (3) |
C18—O11—Ba1vii | 137.9 (2) | O8—C14—C13 | 113.9 (3) |
C18—O12—Ba1viii | 141.5 (2) | C16—C15—S5 | 108.0 (2) |
Ba1—O1W—H1WA | 104 (3) | C16—C15—H15A | 110 (2) |
Ba1—O1W—H1WB | 112 (3) | S5—C15—H15A | 108.5 (19) |
H1WA—O1W—H1WB | 118 (4) | C16—C15—H15B | 109.6 (19) |
Ba1—O2W—H2WA | 119 (5) | S5—C15—H15B | 114 (2) |
Ba1—O2W—H2WB | 126 (3) | H15A—C15—H15B | 107 (3) |
H2WA—O2W—H2WB | 110 (6) | O10—C16—O9 | 124.6 (3) |
Ba1—O3W—H3WA | 114 (3) | O10—C16—C15 | 123.1 (3) |
Ba1—O3W—H3WB | 113 (3) | O9—C16—C15 | 112.3 (3) |
H3WA—O3W—H3WB | 103 (4) | C18—C17—S6 | 108.1 (2) |
H4WA—O4W—H4WB | 115 (6) | C18—C17—H17A | 112 (2) |
C1—S1—C4 | 99.88 (17) | S6—C17—H17A | 112 (2) |
C2—S2—C6 | 100.35 (17) | C18—C17—H17B | 109.1 (18) |
C3—S3—C8 | 100.15 (17) | S6—C17—H17B | 108.7 (18) |
C10—S4—C13 | 99.65 (16) | H17A—C17—H17B | 108 (3) |
C11—S5—C15 | 102.16 (17) | O11—C18—O12 | 124.6 (3) |
C12—S6—C17 | 101.99 (17) | O11—C18—C17 | 120.1 (3) |
N1—C1—N3 | 125.8 (3) | O12—C18—C17 | 115.2 (3) |
N1—C1—S1 | 120.0 (3) | | |
Symmetry codes: (i) x−1, −y+1/2, z−1/2; (ii) x−1, y, z−1; (iii) x−1, y, z; (iv) x, −y+1/2, z+1/2; (v) x+1, y, z; (vi) x, −y+1/2, z−1/2; (vii) x+1, −y+1/2, z+1/2; (viii) x+1, y, z+1. |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O2ix | 0.82 (1) | 1.69 (2) | 2.491 (5) | 165 (9) |
O3—H3···O1Wv | 0.79 (4) | 1.85 (4) | 2.634 (4) | 168 (5) |
O5—H5···O5x | 0.75 (7) | 1.73 (7) | 2.467 (5) | 166 (12) |
O8—H8···O3W | 0.78 (4) | 1.96 (4) | 2.735 (4) | 172 (4) |
O9—H9···O12xi | 0.83 (1) | 1.68 (1) | 2.511 (3) | 174 (4) |
O1W—H1WA···O1 | 0.80 (4) | 2.54 (4) | 2.949 (4) | 113 (4) |
O1W—H1WB···O4Wxii | 0.82 (4) | 2.09 (4) | 2.864 (5) | 157 (4) |
O2W—H2WA···O9 | 0.67 (4) | 2.22 (4) | 2.886 (4) | 177 (6) |
O2W—H2WB···O4Wiii | 0.80 (4) | 2.00 (4) | 2.784 (5) | 169 (5) |
O3W—H3WA···O6xiii | 0.88 (4) | 1.94 (4) | 2.813 (4) | 171 (4) |
O4W—H4WA···O5 | 0.82 (1) | 2.01 (1) | 2.822 (4) | 172 (6) |
Symmetry codes: (iii) x−1, y, z; (v) x+1, y, z; (ix) −x, −y, −z+2; (x) −x+2, −y, −z+1; (xi) x−1, −y+1/2, z−3/2; (xii) x−1, y, z+1; (xiii) −x+1, −y, −z+2. |
Experimental details
Crystal data |
Chemical formula | [Ba(C9H8N3O6S3)2(H2O)3]·H2O |
Mr | 910.13 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 12.0121 (15), 31.327 (4), 8.8522 (11) |
β (°) | 109.794 (2) |
V (Å3) | 3134.3 (7) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.75 |
Crystal size (mm) | 0.27 × 0.26 × 0.25 |
|
Data collection |
Diffractometer | Bruker SMART APEX CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.650, 0.669 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 15959, 6052, 4342 |
Rint | 0.062 |
(sin θ/λ)max (Å−1) | 0.617 |
|
Refinement |
R[F2 > 2σ(F2)], wR(F2), S | 0.033, 0.052, 0.84 |
No. of reflections | 6052 |
No. of parameters | 499 |
No. of restraints | 4 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.58, −0.56 |
Selected geometric parameters (Å, º) topBa1—O1 | 2.706 (2) | Ba1—O4iii | 2.875 (2) |
Ba1—O2W | 2.738 (4) | Ba1—O3W | 2.893 (3) |
Ba1—O7 | 2.784 (2) | Ba1—O1W | 2.931 (3) |
Ba1—O11i | 2.799 (3) | Ba1—O10iv | 2.951 (2) |
Ba1—O12ii | 2.857 (2) | | |
| | | |
O7—Ba1—O11i | 124.26 (7) | O4iii—Ba1—O3W | 136.68 (8) |
O1—Ba1—O12ii | 145.36 (8) | O2W—Ba1—O1W | 129.50 (8) |
O7—Ba1—O4iii | 134.61 (7) | O4iii—Ba1—O10iv | 150.98 (7) |
Symmetry codes: (i) x−1, −y+1/2, z−1/2; (ii) x−1, y, z−1; (iii) x−1, y, z; (iv) x, −y+1/2, z+1/2. |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O2v | 0.822 (10) | 1.69 (2) | 2.491 (5) | 165 (9) |
O3—H3···O1Wvi | 0.79 (4) | 1.85 (4) | 2.634 (4) | 168 (5) |
O5—H5···O5vii | 0.75 (7) | 1.73 (7) | 2.467 (5) | 166 (12) |
O8—H8···O3W | 0.78 (4) | 1.96 (4) | 2.735 (4) | 172 (4) |
O9—H9···O12viii | 0.832 (10) | 1.682 (11) | 2.511 (3) | 174 (4) |
O1W—H1WA···O1 | 0.80 (4) | 2.54 (4) | 2.949 (4) | 113 (4) |
O1W—H1WB···O4Wix | 0.82 (4) | 2.09 (4) | 2.864 (5) | 157 (4) |
O2W—H2WA···O9 | 0.67 (4) | 2.22 (4) | 2.886 (4) | 177 (6) |
O2W—H2WB···O4Wiii | 0.80 (4) | 2.00 (4) | 2.784 (5) | 169 (5) |
O3W—H3WA···O6x | 0.88 (4) | 1.94 (4) | 2.813 (4) | 171 (4) |
O4W—H4WA···O5 | 0.818 (10) | 2.010 (14) | 2.822 (4) | 172 (6) |
Symmetry codes: (iii) x−1, y, z; (v) −x, −y, −z+2; (vi) x+1, y, z; (vii) −x+2, −y, −z+1; (viii) x−1, −y+1/2, z−3/2; (ix) x−1, y, z+1; (x) −x+1, −y, −z+2. |
In recent years, metal–organic coordination polymers have attracted considerable attention, due to their fascinating molecular topologies and crystal-packing motifs, and their potential application as smart optoelectronic, magnetic and porous materials (Moulton & Zaworotko, 2001; Kitagawa et al., 2004; Ferey et al., 2005; Murray et al., 2009). Metal carboxylates are of particular interest (Rao et al., 2004; Rowsell & Yaghi 2005; Ma et al., 2007; Pan et al., 2006; Rather & Zaworotko 2003). Generally, two kinds of these ligands have been used: rigid ones, such as benzenedicarboxylate and benzenetricarboxylate, and flexible ones, such as succinic and glutaric acids. The former exhibit limited conformations after coordination with the metal centre, and the final coordination supramolecular arrays are somewhat predictable. The latter, however, can adopt variable conformations according to the geometric requirements of different metal ions, and may afford unpredictable and interesting architectures (Gomez-Lor et al., 2005; Zang et al., 2006; Dong et al., 2007). To the best of our knowledge, only limited work has been carried out using polycarboxylate ligands with characteristics of both flexibility and rigidity (Jiang et al., 2009; Harbuzaru et al., 2008; Cen et al., 2009). Likewise, in contrast with the well investigated transition and lanthanide metal systems, only a few alkaline earth coordination polymers have been studied. Until recently, the study of alkaline earth metal carboxylates has been an underdeveloped area (Murugavel et al., 2001; Zhu et al., 2005; Cote & Shimizu, 2003; Yang, et al., 2006).
Our interest is the coordination chemistry of semi-rigid polycarboxylate ligands created by introducing –OCH2–, –NCH2– or –NHCO2– groups between the aromatic ring and the carboxylate groups: examples are benzene-1,3,5-tri(carboxymethyl), N,N',N''-1,3,5-triazine-2,4,6-triyltris-glycine and N,N',N''-1,3,5-benzenetricarboxamide. Systematic investigation of the traditional coordination chemistry of these ligands has been carried out (Wang et al., 2006, 2007; Sun et al., 2007). Compared with the corresponding rigid benzenecarboxylate ligands, the additional –XCH2– (X = O, N) groups make the ligands more flexible, and the X atoms may also function as electron donors or acceptors of interesting hydrogen bonds. As a continuation of our work on alkaline earth coordination chemistry, we report the title compound, {[Ba(C9H8N3O6S3)2(H2O)3].H2O}n, (I), a novel (4,6)-connected double-layered BaII coordination polymer, formed through the reaction of 2,2',2''-[1,3,5-triazine-2,4,6-triyltris(sulfanediyl)]triacetic acid (H3TTTA) with BaCl2 in the absence [Presence?] of pyridine.
Single-crystal X-ray diffraction reveals that (I) is a two-dimensional coordination polymer. As shown in Fig. 1, the asymmetric unit is composed of one crystallographically independent BaII ion, two H2TTTA- anion ligands, three coordinated water molecules and one solvent water molecule. Each BaII centre is nine-coordinated by six O atoms from different carboxylate groups of four discrete H2TTTA- anion ligands and three O atoms from water molecules. The whole geometry around the centre is distorted, forming neither a tricapped antiprism nor a monocapped square antiprism. The Ba—O bond distances range from 2.706 (2) to 2.951 (2) Å (Table 1), within the range of those observed for other barium carboxylate complexes (Zhu et al., 2005). Interestingly, for the charge balance of the total structure, the H atoms on atoms O2 and O5 are half-occupied and take part in bridging hydrogen bonds (Table 2). The incompletely deprotonated ligands adopt two different coordination geometries: µ2-η1:η1 (mode a) and µ4-η1:η1:η2 (mode b) (Fig. 2). The three flexible arms of the ligand show significant deviation in their bending to the different sides of the central triazine ring. In mode a, the dihedral angles between the three carboxylic acid groups and the central triazine ring are 15.0 (4), 70.5 (4) and 8.4 (4)° [Please give atom groups, in order], respectively. In mode b, the carboxylate group coordinated in a bidentate conformation forms a dihedral angle of 18.7 (4)° with the triazine ring, while the two monodentate carboxylic groups make dihedral angles of 74.3 (4) and 5.7 (5)° [Please give atom groups, in order], respectively. Consequently, the tricarboxylate ligands act as both µ2- and µ4-bridges, connecting the alkaline earth metal centres.
The bidentate carboxylate groups in mode b bridge the Ba centres in a syn–anti conformation to form one-dimensional {Ba(OCO)}n chains along the c axis. These chains are further connected by other monodentate carboxylate groups across the ligands, forming an infinite two-dimensional layer in the ac plane (Fig. 3a). The Ba···Ba distances separated by the carboxylate group and across the ligand are 7.51 (8), 12.27 (1) and 15.79 (5) Å [Please give atom groups, in order], respectively. The H2TTTA- anion ligands in mode a are situated above and below the layer through the µ2-bridging carboxylate ligands. As a result, a novel double-layered structure in the ac plane is formed, with a mean thickness of ca 6.07 (8) Å along the b axis based on the metal centres (Fig. 3b). Due to the presence of the carboxylic acid groups, many hydrogen-bonding interactions are observed within the layer (Fig. 4 and Table 2). We note the less usual dimensions found for the interactions involving the half-occupied atoms H2 and H5 (entries 1 and 3 in Table 2). These double layers are held together further by O—H···O hydrogen bonds between the coordinated aqua atom O3W and carboxylic acid atom O6, resulting in a three-dimensional supramolecular structure (Fig. 5).
In order to identify further the connectivity between the ligands and the metal centres, a representation of one double layer is illustrated in Fig. 6. Topologically, the tricarboxylate ligands in modes a and b can be viewed as a linear linker and a planar 4-connected node, respectively. The alkaline earth metal centre binds to two linear linkers and connects four 4-connected nodes, which can then be considered as an irregular 6-connected node. As a result, the whole topology of (I) is a novel binodal (4,6)-connected net with a Schläfli symbol of (4455657)(4456) (Wells, 1975). The long symbols for the two nodes are 4.4.4.4.5 (2).5(3).5(3).5.5.6 (3).6(2).6(3).6(2) and 4.4.4.4.5 (4).6(2), respectively. To the best of our knowledge, topologies with (4,6)-connectivity are extremely rare (Li et al., 2008; Lou et al., 2009), and the net in this complex may represent the first example in alkaline earth coordination chemistry.