The title compound, poly[nickel(II)-bis(α-hydroxyacetato-κ3O1,O2:O1′)], [Ni(C2H3O3)2]n, is isomorphous with the reported cobalt analogue. The Ni atom is located on a centre of inversion.
Supporting information
CCDC reference: 238647
Key indicators
- Single-crystal X-ray study
- T = 298 K
- Mean (C-C) = 0.003 Å
- R factor = 0.021
- wR factor = 0.056
- Data-to-parameter ratio = 14.2
checkCIF/PLATON results
No syntax errors found
Alert level C
PLAT062_ALERT_4_C Rescale T(min) & T(max) by ..................... 0.98
PLAT250_ALERT_2_C Large U3/U1 Ratio for Average U(i,j) Tensor .... 2.37
0 ALERT level A = In general: serious problem
0 ALERT level B = Potentially serious problem
2 ALERT level C = Check and explain
0 ALERT level G = General alerts; check
0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
1 ALERT type 2 Indicator that the structure model may be wrong or deficient
0 ALERT type 3 Indicator that the structure quality may be low
1 ALERT type 4 Improvement, methodology, query or suggestion
Data collection: SMART (Bruker, 2001); cell refinement: SAINT (Bruker 2001); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: SHELXL97.
poly[nickel(II)-bis(
α-hydroxyacetato-
κ3O1,
O2:
O1')]
top
Crystal data top
[Ni(C2H3O3)2] | F(000) = 212 |
Mr = 208.80 | Dx = 2.133 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
a = 5.1304 (7) Å | Cell parameters from 1462 reflections |
b = 7.6367 (11) Å | θ = 3.6–27.9° |
c = 8.6076 (12) Å | µ = 2.96 mm−1 |
β = 105.443 (2)° | T = 298 K |
V = 325.06 (8) Å3 | Prism, green |
Z = 2 | 0.38 × 0.20 × 0.12 mm |
Data collection top
Smart Apex 2000 diffractometer | 736 independent reflections |
Radiation source: fine-focus sealed tube | 702 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.015 |
φ and ω scans | θmax = 28.1°, θmin = 3.6° |
Absorption correction: empirical (using intensity measurements) (SADABS; Sheldrick, 1996) | h = −5→6 |
Tmin = 0.399, Tmax = 0.718 | k = −7→9 |
1829 measured reflections | l = −10→10 |
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)] = 0.021 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.056 | H-atom parameters constrained |
S = 1.11 | w = 1/[σ2(Fo2) + (0.0283P)2 + 0.1923P] where P = (Fo2 + 2Fc2)/3 |
736 reflections | (Δ/σ)max < 0.001 |
52 parameters | Δρmax = 0.32 e Å−3 |
0 restraints | Δρmin = −0.36 e Å−3 |
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 | x | y | z | Uiso*/Ueq | |
Ni1 | 0.5000 | 1.0000 | 1.0000 | 0.01406 (12) | |
O1 | 0.2283 (2) | 0.80972 (17) | 1.01304 (14) | 0.0201 (3) | |
H1C | 0.0986 | 0.8216 | 1.0509 | 0.030* | |
O2 | 0.5250 (2) | 0.84946 (17) | 0.81302 (14) | 0.0193 (3) | |
O3 | 0.3199 (2) | 0.64427 (18) | 0.64455 (15) | 0.0214 (3) | |
C1 | 0.1521 (4) | 0.7049 (3) | 0.8725 (2) | 0.0293 (4) | |
H1A | −0.0303 | 0.7345 | 0.8114 | 0.035* | |
H1B | 0.1550 | 0.5823 | 0.9023 | 0.035* | |
C2 | 0.3465 (3) | 0.7358 (2) | 0.77028 (19) | 0.0167 (3) | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
Ni1 | 0.01379 (19) | 0.01679 (19) | 0.01220 (18) | −0.00018 (10) | 0.00450 (12) | −0.00083 (10) |
O1 | 0.0198 (6) | 0.0262 (7) | 0.0176 (6) | −0.0055 (5) | 0.0106 (5) | −0.0052 (5) |
O2 | 0.0190 (6) | 0.0226 (6) | 0.0187 (6) | −0.0040 (5) | 0.0090 (5) | −0.0043 (5) |
O3 | 0.0190 (6) | 0.0286 (7) | 0.0185 (6) | −0.0059 (5) | 0.0081 (5) | −0.0083 (5) |
C1 | 0.0285 (10) | 0.0381 (11) | 0.0270 (10) | −0.0155 (8) | 0.0176 (8) | −0.0147 (8) |
C2 | 0.0155 (8) | 0.0206 (8) | 0.0145 (8) | 0.0014 (6) | 0.0050 (6) | 0.0005 (6) |
Geometric parameters (Å, º) top
Ni1—O2 | 2.0095 (12) | O1—H1C | 0.8200 |
Ni1—O2i | 2.0095 (12) | O2—C2 | 1.244 (2) |
Ni1—O1i | 2.0374 (12) | O3—C2 | 1.265 (2) |
Ni1—O1 | 2.0374 (12) | O3—Ni1iv | 2.0899 (12) |
Ni1—O3ii | 2.0899 (12) | C1—C2 | 1.514 (2) |
Ni1—O3iii | 2.0899 (12) | C1—H1A | 0.9700 |
O1—C1 | 1.416 (2) | C1—H1B | 0.9700 |
| | | |
O2—Ni1—O2i | 180.000 (1) | O3ii—Ni1—O3iii | 180.000 (1) |
O2—Ni1—O1i | 99.99 (5) | C1—O1—Ni1 | 113.16 (11) |
O2i—Ni1—O1i | 80.01 (5) | C2—O2—Ni1 | 115.92 (10) |
O2—Ni1—O1 | 80.01 (5) | C2—O3—Ni1iv | 133.60 (11) |
O2i—Ni1—O1 | 99.99 (5) | O1—C1—C2 | 109.50 (15) |
O1i—Ni1—O1 | 180.0 | O1—C1—H1A | 109.8 |
O2—Ni1—O3ii | 91.84 (5) | C2—C1—H1A | 109.8 |
O2i—Ni1—O3ii | 88.16 (5) | O1—C1—H1B | 109.8 |
O1i—Ni1—O3ii | 91.81 (5) | C2—C1—H1B | 109.8 |
O1—Ni1—O3ii | 88.19 (5) | H1A—C1—H1B | 108.2 |
O2—Ni1—O3iii | 88.16 (5) | O2—C2—O3 | 122.82 (15) |
O2i—Ni1—O3iii | 91.84 (5) | O2—C2—C1 | 118.93 (15) |
O1i—Ni1—O3iii | 88.19 (5) | O3—C2—C1 | 118.25 (15) |
O1—Ni1—O3iii | 91.81 (5) | | |
Symmetry codes: (i) −x+1, −y+2, −z+2; (ii) −x+1/2, y+1/2, −z+3/2; (iii) x+1/2, −y+3/2, z+1/2; (iv) −x+1/2, y−1/2, −z+3/2. |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1C···O3v | 0.82 | 1.84 | 2.6568 (17) | 177 |
Symmetry code: (v) x−1/2, −y+3/2, z+1/2. |