catena-Poly[[bis­(3,5-dicarboxy­benzo­ato)cobalt(II)]-μ-4,4′-bipyridine]

Ling, C.-S.; Han, Q.-X.

doi:10.1107/S1600536808032558

metal-organic compounds

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ISSN: 2056-9890

Volume 64| Part 11| November 2008| Page m1400

doi:10.1107/S1600536808032558

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catena-Poly[[bis(3,5-dicarboxybenzoato)cobalt(II)]-μ-4,4′-bipyridine]

Chun-Sheng Ling ^a and Qiu-Xia Han ^b ^*

^aPharmaceutical College of Henan University, Kaifeng 475004, People's Republic of China, and ^bBasic Experiment Teaching Center, Henan University, Kaifeng 475004, People's Republic of China
^*Correspondence e-mail: hdhqx@henu.edu.cn

(Received 7 October 2008; accepted 8 October 2008; online 15 October 2008)

In the title compound, [Co(C₉H₅O₆)₂(C₁₀H₈N₂)]_n, the asymmetric unit consists of one Co²⁺ ion with site symmetry 2, one mono-deprotonated 1,3,5-benzenetricarboxylic acid anion and one-half of a 4,4′-bipyridine (4,4′-bipy) molecule, in which two N and two C atoms have site symmetry 2. In the crystal structure, the Co²⁺ centre is coordinated by four O atoms from two bidentate carboxylate groups of two anions and two N atoms of two 4,4′-bipy molecules, resulting in infinite chains propagating in [010]. The cobalt coordination is distorted trans-CoO₄N₂ octahedral and interchain O—H⋯O hydrogen bonds complete the structure.

Related literature

For background, see: Feller et al. (2007 ); Brown et al. (2008 ).

Experimental

Crystal data

[Co(C₉H₅O₆)₂(C₁₀H₈N₂)]
M_r = 633.37
Monoclinic, C 2/c
a = 10.6682 (7) Å
b = 11.0490 (7) Å
c = 22.6563 (14) Å
β = 101.401 (1)°
V = 2617.9 (3) Å³
Z = 4
Mo Kα radiation
μ = 0.73 mm⁻¹
T = 293 (2) K
0.18 × 0.15 × 0.13 mm

Data collection

Bruker SMART CCD diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 2001 ) T_min = 0.880, T_max = 0.911
7123 measured reflections
2579 independent reflections
2051 reflections with I > 2σ(I)
R_int = 0.031

Refinement

R[F² > 2σ(F²)] = 0.038
wR(F²) = 0.098
S = 1.02
2579 reflections
197 parameters
7 restraints
H-atom parameters constrained
Δρ_max = 0.30 e Å⁻³
Δρ_min = −0.73 e Å⁻³

Table 1
Selected bond lengths (Å)

Co1—N2ⁱ	1.982 (2)
Co1—N1	1.992 (2)
Co1—O1	2.0221 (14)
Co1—O2	2.4354 (13)
Symmetry code: (i) x, y+1, z.

Table 2
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
O3—H3⋯O2ⁱⁱ	0.81	1.88	2.648 (2)	157
O5—H5⋯O6ⁱⁱⁱ	0.78	1.88	2.651 (2)	170
Symmetry codes: (ii) $[-x+{\script{1\over 2}}, -y+{\script{3\over 2}}, -z]$ ; (iii) -x+2, -y+1, -z.

Data collection: SMART (Bruker, 2001 ); cell refinement: SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2003 ); software used to prepare material for publication: PLATON.

Supporting information

Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536808032558/hb2815sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536808032558/hb2815Isup2.hkl

checkCIF report

Comment top

Recently, many efforts in coordination chemistry and crystal engineering have been devoted to the construction of metal-organic coordination polymers (MOCPs) employing both coordination bonds and/or hydrogen bonds, due to their appropriate strength and directionality (Feller et al. 2007). Dual-ligand or multidentate organic ligands are usually engaged in the construction of MOCPs, among which carboxylates and N,N-bidentate ligands are all the simplest connectors potentially able to bridge metal ions (Brown et al. 2008). Herein, we report the title compound (I) containing organic dual-ligands (Fig. 1).

The structure of (I) presents a one-dimensional infinite chain (Fig.2), in which the Co²⁺ centre (site symmetry 2) is coordinated by four O atoms from two bidentate carboxylate groups of two 1,3,5-benzenetricarboxylic acid anions, two N atoms of two 4,4'-bipyridine molecules. The Co²⁺ caion resides in a distorted octahedral configuration. In the equatorial plane, it is chelted by four carboxylate oxygen atoms (O1, O2 and their symmetry equivalents) from two 1,3,5-benzenetricarboxylic acid anions (Table 1), in which the Co—O distances are very different.

In addition, these one-dimensional chains are linked together by O—H···O hydrogen bonds between carboxylate groups generating a three-dimensional framework (Fig. 3 and Table 2).

Related literature top

For background, see: Feller et al. (2007); Brown et al. (2008).

Experimental top

Solid Co(CH₃COO)₂.4H₂O (1 mmol, 0.245 g) was added to an aqueous solution (25 ml) of 1,3,5-benzenetricarboxylic acid (2 mmol, 0.420 g) and 4,4'-bipyridine (1 mmol, 0.156 g). The mixture was refluxed for two hours at 373 K. The solution was filtered, and the filtrate was kept at room temperature. After ten days, purple blocks of (I) were obtained.

Computing details top

Data collection: SMART (Bruker, 2001); cell refinement: SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2003); software used to prepare material for publication: PLATON (Spek, 2003).

Figures top

	Fig. 1. Asymmetric unit of (I), showing displacement ellipsoids at the 50% probability level for the non-hydrogen atoms.
	Fig. 2. One-dimensional chain structure of (I). H atoms are omitted for clarity. Displacement ellipsoids are drawn at the 50% probability level.
	Fig. 3. Three-dimensional structure of (I) arising by means of hydrogen bonds. Displacement ellipsoids are drawn at the 50% probability level.

catena-Poly[[bis(3,5-dicarboxybenzoato)cobalt(II)]-µ-4,4'-bipyridine] top

Crystal data top

[Co(C₉H₅O₆)₂(C₁₀H₈N₂)]	F(000) = 1292
M_r = 633.37	D_x = 1.607 Mg m⁻³
Monoclinic, C2/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -C 2yc	Cell parameters from 1750 reflections
a = 10.6682 (7) Å	θ = 2.7–25.9°
b = 11.0490 (7) Å	µ = 0.73 mm⁻¹
c = 22.6563 (14) Å	T = 293 K
β = 101.401 (1)°	Block, purple
V = 2617.9 (3) Å³	0.18 × 0.15 × 0.13 mm
Z = 4

Data collection top

Bruker SMART CCD diffractometer	2579 independent reflections
Radiation source: fine-focus sealed tube	2051 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.031
ω scans	θ_max = 26.0°, θ_min = 2.7°
Absorption correction: multi-scan (SADABS; Sheldrick, 2001)	h = −13→13
T_min = 0.880, T_max = 0.911	k = −13→13
7123 measured reflections	l = −27→15

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)] = 0.038	Hydrogen site location: difmap and geom
wR(F²) = 0.098	H-atom parameters constrained
S = 1.02	w = 1/[σ²(F_o²) + (0.0508P)² + 1.9201P] where P = (F_o² + 2F_c²)/3
2579 reflections	(Δ/σ)_max = 0.001
197 parameters	Δρ_max = 0.31 e Å⁻³
7 restraints	Δρ_min = −0.73 e Å⁻³

Crystal data top

[Co(C₉H₅O₆)₂(C₁₀H₈N₂)]	V = 2617.9 (3) Å³
M_r = 633.37	Z = 4
Monoclinic, C2/c	Mo Kα radiation
a = 10.6682 (7) Å	µ = 0.73 mm⁻¹
b = 11.0490 (7) Å	T = 293 K
c = 22.6563 (14) Å	0.18 × 0.15 × 0.13 mm
β = 101.401 (1)°

Data collection top

Bruker SMART CCD diffractometer	2579 independent reflections
Absorption correction: multi-scan (SADABS; Sheldrick, 2001)	2051 reflections with I > 2σ(I)
T_min = 0.880, T_max = 0.911	R_int = 0.031
7123 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.038	7 restraints
wR(F²) = 0.098	H-atom parameters constrained
S = 1.02	Δρ_max = 0.31 e Å⁻³
2579 reflections	Δρ_min = −0.73 e Å⁻³
197 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

	x	y	z	U_iso*/U_eq
Co1	0.5000	0.64801 (3)	0.2500	0.01788 (9)
O1	0.60733 (12)	0.64666 (13)	0.18575 (6)	0.0280 (3)
O2	0.40351 (13)	0.65638 (14)	0.14327 (6)	0.0347 (4)
O3	0.30786 (17)	0.7752 (2)	−0.06851 (8)	0.0661 (6)
H3	0.2523	0.7863	−0.0982	0.099*
O4	0.39825 (18)	0.6736 (2)	−0.13349 (8)	0.0692 (6)
O5	0.85792 (15)	0.55679 (17)	−0.04477 (7)	0.0509 (5)
H5	0.9287	0.5390	−0.0439	0.076*
O6	0.91135 (16)	0.5199 (2)	0.05406 (8)	0.0591 (6)
N1	0.5000	0.4678 (2)	0.2500	0.0232 (4)
N2	0.5000	−0.1726 (2)	0.2500	0.0274 (6)
C1	0.55508 (19)	0.64578 (18)	0.07857 (9)	0.0281 (5)
C2	0.67509 (19)	0.60572 (19)	0.07160 (9)	0.0298 (5)
H2	0.7360	0.5843	0.1053	0.036*
C3	0.70461 (19)	0.5975 (2)	0.01464 (10)	0.0306 (5)
C4	0.6137 (2)	0.6293 (2)	−0.03605 (10)	0.0338 (5)
H4	0.6326	0.6222	−0.0742	0.041*
C5	0.4946 (2)	0.6717 (2)	−0.02928 (10)	0.0329 (5)
C6	0.4664 (2)	0.6797 (2)	0.02785 (10)	0.0327 (5)
H6	0.3867	0.7084	0.0322	0.039*
C7	0.51892 (19)	0.65013 (18)	0.13895 (9)	0.0265 (5)
C8	0.8332 (2)	0.5551 (2)	0.00808 (10)	0.0362 (6)
C9	0.3971 (2)	0.7059 (2)	−0.08302 (10)	0.0392 (6)
C10	0.4034 (2)	0.40519 (19)	0.21766 (10)	0.0321 (5)
H10	0.3356	0.4477	0.1947	0.039*
C11	0.3993 (2)	0.28136 (19)	0.21669 (10)	0.0330 (5)
H11	0.3295	0.2414	0.1938	0.040*
C12	0.5000	0.2156 (3)	0.2500	0.0284 (7)
C13	0.5000	0.0812 (3)	0.2500	0.0269 (7)
C14	0.38822 (19)	0.01470 (19)	0.23157 (10)	0.0333 (5)
H14	0.3108	0.0547	0.2192	0.040*
C15	0.3916 (2)	−0.1093 (2)	0.23148 (10)	0.0328 (5)
H15	0.3158	−0.1514	0.2181	0.039*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Co1	0.02150 (17)	0.01328 (16)	0.01973 (17)	0.000	0.00619 (13)	0.000
O1	0.0246 (6)	0.0345 (8)	0.0250 (7)	0.0022 (6)	0.0052 (5)	0.0008 (6)
O2	0.0252 (7)	0.0480 (9)	0.0314 (8)	0.0040 (7)	0.0071 (6)	0.0026 (7)
O3	0.0446 (10)	0.1163 (17)	0.0354 (10)	0.0378 (11)	0.0033 (8)	0.0035 (10)
O4	0.0557 (11)	0.1214 (18)	0.0293 (10)	0.0270 (12)	0.0052 (8)	−0.0022 (10)
O5	0.0367 (8)	0.0734 (12)	0.0478 (10)	0.0152 (8)	0.0210 (7)	0.0025 (9)
O6	0.0376 (9)	0.0938 (15)	0.0466 (10)	0.0261 (9)	0.0100 (8)	0.0094 (10)
N1	0.0263 (7)	0.0191 (7)	0.0246 (7)	0.000	0.0062 (6)	0.000
N2	0.0268 (12)	0.0246 (13)	0.0313 (13)	0.000	0.0072 (10)	0.000
C1	0.0268 (10)	0.0300 (10)	0.0276 (10)	0.0007 (9)	0.0057 (8)	−0.0005 (9)
C2	0.0250 (10)	0.0327 (11)	0.0308 (11)	0.0034 (9)	0.0030 (9)	0.0013 (9)
C3	0.0254 (10)	0.0333 (11)	0.0335 (11)	0.0015 (9)	0.0070 (9)	−0.0025 (9)
C4	0.0294 (10)	0.0441 (13)	0.0296 (11)	0.0011 (10)	0.0097 (9)	−0.0015 (10)
C5	0.0289 (11)	0.0410 (13)	0.0288 (11)	0.0011 (9)	0.0054 (9)	0.0003 (9)
C6	0.0256 (10)	0.0413 (12)	0.0320 (12)	0.0031 (9)	0.0071 (9)	−0.0010 (10)
C7	0.0259 (10)	0.0244 (10)	0.0291 (10)	0.0014 (8)	0.0050 (8)	0.0002 (9)
C8	0.0297 (11)	0.0435 (13)	0.0369 (13)	0.0022 (10)	0.0100 (10)	−0.0008 (10)
C9	0.0292 (11)	0.0614 (15)	0.0284 (12)	0.0044 (11)	0.0092 (9)	0.0027 (11)
C10	0.0317 (11)	0.0265 (11)	0.0370 (12)	0.0027 (9)	0.0042 (9)	0.0031 (9)
C11	0.0310 (11)	0.0271 (11)	0.0391 (12)	−0.0005 (9)	0.0030 (9)	−0.0002 (9)
C12	0.0267 (14)	0.0246 (15)	0.0354 (16)	0.000	0.0096 (12)	0.000
C13	0.0270 (14)	0.0238 (15)	0.0300 (16)	0.000	0.0057 (12)	0.000
C14	0.0246 (10)	0.0265 (11)	0.0464 (13)	0.0007 (9)	0.0015 (10)	0.0022 (10)
C15	0.0241 (10)	0.0276 (11)	0.0456 (13)	−0.0015 (9)	0.0044 (10)	0.0006 (10)

Geometric parameters (Å, º) top

Co1—N2ⁱ	1.982 (2)	C1—C7	1.494 (3)
Co1—N1	1.992 (2)	C2—C3	1.390 (3)
Co1—O1ⁱⁱ	2.0221 (14)	C2—H2	0.9300
Co1—O1	2.0221 (14)	C3—C4	1.393 (3)
Co1—O2ⁱⁱ	2.4354 (13)	C3—C8	1.485 (3)
Co1—O2	2.4354 (13)	C4—C5	1.391 (3)
O1—C7	1.273 (2)	C4—H4	0.9300
O2—C7	1.256 (2)	C5—C6	1.389 (3)
O3—C9	1.314 (3)	C5—C9	1.485 (3)
O3—H3	0.8127	C6—H6	0.9300
O4—C9	1.200 (3)	C10—C11	1.369 (3)
O5—C8	1.276 (3)	C10—H10	0.9300
O5—H5	0.7761	C11—C12	1.390 (3)
O6—C8	1.260 (3)	C11—H11	0.9300
N1—C10	1.333 (2)	C12—C11ⁱⁱ	1.390 (3)
N1—C10ⁱⁱ	1.333 (2)	C12—C13	1.485 (4)
N2—C15ⁱⁱ	1.346 (2)	C13—C14	1.392 (2)
N2—C15	1.346 (2)	C13—C14ⁱⁱ	1.392 (2)
N2—Co1ⁱⁱⁱ	1.982 (2)	C14—C15	1.371 (3)
C1—C6	1.388 (3)	C14—H14	0.9300
C1—C2	1.393 (3)	C15—H15	0.9300

N2ⁱ—Co1—N1	180.0	C1—C6—C5	121.1 (2)
N2ⁱ—Co1—O1ⁱⁱ	90.42 (4)	C1—C6—H6	119.5
N1—Co1—O1ⁱⁱ	89.58 (4)	C5—C6—H6	119.5
N2ⁱ—Co1—O1	90.42 (4)	O2—C7—O1	120.87 (19)
N1—Co1—O1	89.58 (4)	O2—C7—C1	120.51 (18)
O1ⁱⁱ—Co1—O1	179.16 (8)	O1—C7—C1	118.62 (17)
C7—O1—Co1	99.65 (12)	O6—C8—O5	123.7 (2)
C9—O3—H3	109.1	O6—C8—C3	119.2 (2)
C8—O5—H5	110.6	O5—C8—C3	117.11 (19)
C10—N1—C10ⁱⁱ	117.5 (2)	O4—C9—O3	123.8 (2)
C10—N1—Co1	121.23 (12)	O4—C9—C5	124.6 (2)
C10ⁱⁱ—N1—Co1	121.23 (12)	O3—C9—C5	111.60 (19)
C15ⁱⁱ—N2—C15	117.4 (2)	N1—C10—C11	123.1 (2)
C15ⁱⁱ—N2—Co1ⁱⁱⁱ	121.30 (12)	N1—C10—H10	118.5
C15—N2—Co1ⁱⁱⁱ	121.30 (12)	C11—C10—H10	118.5
C6—C1—C2	118.9 (2)	C10—C11—C12	119.7 (2)
C6—C1—C7	119.49 (18)	C10—C11—H11	120.2
C2—C1—C7	121.58 (18)	C12—C11—H11	120.2
C3—C2—C1	120.52 (19)	C11ⁱⁱ—C12—C11	116.9 (3)
C3—C2—H2	119.7	C11ⁱⁱ—C12—C13	121.54 (13)
C1—C2—H2	119.7	C11—C12—C13	121.54 (13)
C2—C3—C4	120.00 (19)	C14—C13—C14ⁱⁱ	116.3 (3)
C2—C3—C8	119.79 (18)	C14—C13—C12	121.83 (13)
C4—C3—C8	120.2 (2)	C14ⁱⁱ—C13—C12	121.83 (13)
C5—C4—C3	119.7 (2)	C15—C14—C13	120.4 (2)
C5—C4—H4	120.1	C15—C14—H14	119.8
C3—C4—H4	120.1	C13—C14—H14	119.8
C6—C5—C4	119.72 (19)	N2—C15—C14	122.7 (2)
C6—C5—C9	120.1 (2)	N2—C15—H15	118.7
C4—C5—C9	120.2 (2)	C14—C15—H15	118.7

N2ⁱ—Co1—O1—C7	−88.18 (11)	C6—C1—C7—O1	−163.76 (19)
N1—Co1—O1—C7	91.82 (11)	C2—C1—C7—O1	17.7 (3)
O1ⁱⁱ—Co1—O1—C7	91.82 (12)	C2—C3—C8—O6	4.3 (3)
N2ⁱ—Co1—N1—C10	−141 (22)	C4—C3—C8—O6	−175.8 (2)
O1ⁱⁱ—Co1—N1—C10	83.93 (12)	C2—C3—C8—O5	−175.6 (2)
O1—Co1—N1—C10	−96.07 (12)	C4—C3—C8—O5	4.3 (3)
N2ⁱ—Co1—N1—C10ⁱⁱ	39 (23)	C6—C5—C9—O4	−159.5 (3)
O1ⁱⁱ—Co1—N1—C10ⁱⁱ	−96.07 (12)	C4—C5—C9—O4	19.2 (4)
O1—Co1—N1—C10ⁱⁱ	83.93 (12)	C6—C5—C9—O3	19.8 (3)
C6—C1—C2—C3	−1.3 (3)	C4—C5—C9—O3	−161.5 (2)
C7—C1—C2—C3	177.20 (19)	C10ⁱⁱ—N1—C10—C11	0.39 (16)
C1—C2—C3—C4	−0.1 (3)	Co1—N1—C10—C11	−179.61 (16)
C1—C2—C3—C8	179.8 (2)	N1—C10—C11—C12	−0.8 (3)
C2—C3—C4—C5	1.4 (3)	C10—C11—C12—C11ⁱⁱ	0.37 (15)
C8—C3—C4—C5	−178.4 (2)	C10—C11—C12—C13	−179.63 (15)
C3—C4—C5—C6	−1.3 (3)	C11ⁱⁱ—C12—C13—C14	161.59 (15)
C3—C4—C5—C9	180.0 (2)	C11—C12—C13—C14	−18.41 (15)
C2—C1—C6—C5	1.5 (3)	C11ⁱⁱ—C12—C13—C14ⁱⁱ	−18.41 (15)
C7—C1—C6—C5	−177.08 (19)	C11—C12—C13—C14ⁱⁱ	161.59 (15)
C4—C5—C6—C1	−0.2 (3)	C14ⁱⁱ—C13—C14—C15	−0.70 (16)
C9—C5—C6—C1	178.6 (2)	C12—C13—C14—C15	179.30 (16)
Co1—O1—C7—O2	1.9 (2)	C15ⁱⁱ—N2—C15—C14	−0.74 (16)
Co1—O1—C7—C1	−177.68 (15)	Co1ⁱⁱⁱ—N2—C15—C14	179.26 (16)
C6—C1—C7—O2	16.6 (3)	C13—C14—C15—N2	1.5 (3)
C2—C1—C7—O2	−161.9 (2)

Symmetry codes: (i) x, y+1, z; (ii) −x+1, y, −z+1/2; (iii) x, y−1, z.

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O3—H3···O2^iv	0.81	1.88	2.648 (2)	157
O5—H5···O6^v	0.78	1.88	2.651 (2)	170

Symmetry codes: (iv) −x+1/2, −y+3/2, −z; (v) −x+2, −y+1, −z.

Experimental details

Crystal data
Chemical formula	[Co(C₉H₅O₆)₂(C₁₀H₈N₂)]
M_r	633.37
Crystal system, space group	Monoclinic, C2/c
Temperature (K)	293
a, b, c (Å)	10.6682 (7), 11.0490 (7), 22.6563 (14)
β (°)	101.401 (1)
V (Å³)	2617.9 (3)
Z	4
Radiation type	Mo Kα
µ (mm⁻¹)	0.73
Crystal size (mm)	0.18 × 0.15 × 0.13

Data collection
Diffractometer	Bruker SMART CCD diffractometer
Absorption correction	Multi-scan (SADABS; Sheldrick, 2001)
T_min, T_max	0.880, 0.911
No. of measured, independent and observed [I > 2σ(I)] reflections	7123, 2579, 2051
R_int	0.031
(sin θ/λ)_max (Å⁻¹)	0.617

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.038, 0.098, 1.02
No. of reflections	2579
No. of parameters	197
No. of restraints	7
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.31, −0.73

Computer programs: SMART (Bruker, 2001), SAINT-Plus (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2003).

Selected bond lengths (Å) top

Co1—N2ⁱ	1.982 (2)	Co1—O1	2.0221 (14)
Co1—N1	1.992 (2)	Co1—O2	2.4354 (13)

Symmetry code: (i) x, y+1, z.

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O3—H3···O2ⁱⁱ	0.81	1.88	2.648 (2)	157
O5—H5···O6ⁱⁱⁱ	0.78	1.88	2.651 (2)	170

Symmetry codes: (ii) −x+1/2, −y+3/2, −z; (iii) −x+2, −y+1, −z.

Acknowledgements

This work was supported by the Basic Research Foundation for Natural Science of Henan University.

References

Brown, K. A., Martin, D. P. & LaDuca, R. L. (2008). CrystEngComm, 10, 1305–1308. Web of Science CSD CrossRef CAS Google Scholar
Bruker (2001). SMART and SAINT-Plus. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Feller, R. K., Forster, P. M., Wudl, F. & Cheetham, A. K. (2007). Inorg. Chem. 46, 8717–8721. Web of Science CSD CrossRef PubMed CAS Google Scholar
Sheldrick, G. M. (2001). SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2003). J. Appl. Cryst. 36, 7–13. Web of Science CrossRef CAS IUCr Journals Google Scholar