[1,2-Bis(pyridin-2-ylmeth­oxy)benzene-κ4N,O,O′,N′]bis­(nitrato-κO)cobalt(II)

Huang, N.-N.; Yu, Y.-H.; Liu, Y.; Hou, G.-F.; Gao, J.-S.

doi:10.1107/S1600536811013328

metal-organic compounds

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 67| Part 5| May 2011| Page m598

doi:10.1107/S1600536811013328

Open

access

[1,2-Bis(pyridin-2-ylmethoxy)benzene-κ⁴N,O,O′,N′]bis(nitrato-κO)cobalt(II)

Nan-Nan Huang,^a Ying-Hui Yu,^b Ying Liu,^b Guang-Feng Hou ^c and Jin-Sheng Gao ^b,^c ^*

^aPharmaceutical College, Heilongjiang University of Traditional Chinese Medicine, Harbin 150040, People's Republic of China, ^bCollege of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People's Republic of China, and ^cEngineering Research Center of Pesticides of Heilongjiang Province, Heilongjiang University, Harbin 150080, People's Republic of China
^*Correspondence e-mail: hgf1000@163.com

(Received 5 April 2011; accepted 8 April 2011; online 16 April 2011)

In the title compound, [Co(NO₃)₂(C₁₈H₁₆N₂O₂)], the Co^II ion is six-coordinated in a distorted octahedral environment defined by two O and two N atoms from the ligand and by two O atoms from two nitrate anions. A two-dimensional network parallel to the ab plane is built up by C—H⋯O hydrogen bonds, which link adjacent molecules in the crystal structure.

Related literature

For the synthesis and general backround to flexible pyridyl-based ligands, see: Liu et al. (2010a ,b ). For a related structure, see: Yu et al. (2010 ).

Experimental

Crystal data

[Co(NO₃)₂(C₁₈H₁₆N₂O₂)]
M_r = 475.28
Triclinic, $[P \overline 1]$
a = 8.6281 (17) Å
b = 10.701 (2) Å
c = 10.921 (2) Å
α = 78.77 (3)°
β = 79.04 (3)°
γ = 78.55 (3)°
V = 957.2 (3) Å³
Z = 2
Mo Kα radiation
μ = 0.95 mm⁻¹
T = 291 K
0.24 × 0.21 × 0.19 mm

Data collection

Rigaku R-AXIS RAPID diffractometer
Absorption correction: multi-scan (ABSCOR; Higashi, 1995 ) T_min = 0.803, T_max = 0.840
9403 measured reflections
4317 independent reflections
2942 reflections with I > 2σ(I)
R_int = 0.033

Refinement

R[F² > 2σ(F²)] = 0.044
wR(F²) = 0.098
S = 1.04
4317 reflections
280 parameters
H-atom parameters constrained
Δρ_max = 0.30 e Å⁻³
Δρ_min = −0.44 e Å⁻³

Table 1
Hydrogen-bond geometry (Å, °)

D—H⋯A	D—H	H⋯A	D⋯A	D—H⋯A
C6—H6A⋯O3ⁱ	0.97	2.46	3.241 (3)	138
C13—H13A⋯O6ⁱⁱ	0.97	2.42	3.296 (4)	150
C17—H17⋯O7ⁱⁱⁱ	0.93	2.58	3.469 (4)	160
C18—H18⋯O7	0.93	2.56	2.970 (4)	107
Symmetry codes: (i) -x, -y, -z+1; (ii) -x+1, -y, -z; (iii) -x+1, -y+1, -z.

Data collection: RAPID-AUTO (Rigaku, 1998 ); cell refinement: RAPID-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002 ); 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: SHELXL97.

Supporting information

Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536811013328/ng5146sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536811013328/ng5146Isup2.hkl

checkCIF report

Comment top

In recent, our group has employed the flexible N-heterocyclic ligands reacting with transition metal to construct several supramolecular architectures (Liu et al. 2010a, 2010b; Yu et al. 2010). As a part of our continuing work for bipyridyl aromatic ligands, we report the crystal structure of the title compound here.

1,2-Bis(pyridin-2-ylmethoxy)benzene molecule act as a chelating ligand to coordinate with Co^II ion forming a discrete structure. Two nitrate anions also coordinate to the center Co^II ion, resulting the Co^II ion is six-coordinated in a distorted octahedral environment (Figure 1).

A two-dimensional network, which parallel to ab plane, is built up by the C—H···O hydrogen bonds linking these isolated complexes (Figure 2, Tbale 1).

Related literature top

For the synthesis and general backround to flexible pyridyl-based ligands, see: Liu et al. (2010a,b). For a related structure, see: Yu et al. (2010).

Experimental top

The 1,2-Bis(pyridin-2-ylmethoxy)benzene was synthesized by the reaction of ο-dihydroxybenzene and 2-chloromethylpyridine hydrochloride under nitrogen atmosphere and alkaline condition (Liu et al., 2010a). Title ligand (0.58 g, 2 mmol) and Co(NO₃)₂^.H₂O (0.44 g, 2 mmol) were dissolved in 15 ml e thanol, and then the mixture keep stirring for 30 minute. The resulting solution was filtered, and the filtrate was allowed to stand in a desiccator at room temperature for several days. Red block crystals were obtained.

Computing details top

Data collection: RAPID-AUTO (Rigaku, 1998); cell refinement: RAPID-AUTO (Rigaku, 1998); data reduction: CrystalStructure (Rigaku/MSC, 2002); 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: SHELXL97 (Sheldrick, 2008).

Figures top

	Fig. 1. The molecular structure of title compound, showing the atom-labellingscheme and displacement ellipsoids drawn at 50% probability level.
	Fig. 2. A partial packing view, showing the planar structure parallelled ab plane. Dashed lines indicate the hydrogen bonds and, no involving H atoms have been omitted for clarity.

[1,2-Bis(pyridin-2-ylmethoxy)benzene- κ⁴N,O,O',N']bis(nitrato-κO)cobalt(II) top

Crystal data top

[Co(NO₃)₂(C₁₈H₁₆N₂O₂)]	Z = 2
M_r = 475.28	F(000) = 486
Triclinic, P1	D_x = 1.649 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 8.6281 (17) Å	Cell parameters from 6221 reflections
b = 10.701 (2) Å	θ = 3.0–27.5°
c = 10.921 (2) Å	µ = 0.95 mm⁻¹
α = 78.77 (3)°	T = 291 K
β = 79.04 (3)°	Block, red
γ = 78.55 (3)°	0.24 × 0.21 × 0.19 mm
V = 957.2 (3) Å³

Data collection top

Rigaku R-AXIS RAPID diffractometer	4317 independent reflections
Radiation source: fine-focus sealed tube	2942 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.033
ω scans	θ_max = 27.5°, θ_min = 3.0°
Absorption correction: multi-scan (ABSCOR; Higashi, 1995)	h = −11→11
T_min = 0.803, T_max = 0.840	k = −13→13
9403 measured reflections	l = −14→12

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)] = 0.044	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.098	H-atom parameters constrained
S = 1.04	w = 1/[σ²(F_o²) + (0.0345P)² + 0.4119P] where P = (F_o² + 2F_c²)/3
4317 reflections	(Δ/σ)_max < 0.001
280 parameters	Δρ_max = 0.30 e Å⁻³
0 restraints	Δρ_min = −0.44 e Å⁻³

Crystal data top

[Co(NO₃)₂(C₁₈H₁₆N₂O₂)]	γ = 78.55 (3)°
M_r = 475.28	V = 957.2 (3) Å³
Triclinic, P1	Z = 2
a = 8.6281 (17) Å	Mo Kα radiation
b = 10.701 (2) Å	µ = 0.95 mm⁻¹
c = 10.921 (2) Å	T = 291 K
α = 78.77 (3)°	0.24 × 0.21 × 0.19 mm
β = 79.04 (3)°

Data collection top

Rigaku R-AXIS RAPID diffractometer	4317 independent reflections
Absorption correction: multi-scan (ABSCOR; Higashi, 1995)	2942 reflections with I > 2σ(I)
T_min = 0.803, T_max = 0.840	R_int = 0.033
9403 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.044	0 restraints
wR(F²) = 0.098	H-atom parameters constrained
S = 1.04	Δρ_max = 0.30 e Å⁻³
4317 reflections	Δρ_min = −0.44 e Å⁻³
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

	x	y	z	U_iso*/U_eq
C1	−0.0687 (3)	0.3713 (3)	0.2950 (3)	0.0486 (7)
H1	0.0015	0.4286	0.2579	0.058*
C2	−0.2202 (3)	0.4199 (3)	0.3487 (3)	0.0554 (7)
H2	−0.2512	0.5083	0.3484	0.066*
C3	−0.3259 (3)	0.3361 (3)	0.4030 (3)	0.0555 (8)
H3	−0.4289	0.3667	0.4408	0.067*
C4	−0.2763 (3)	0.2067 (3)	0.4004 (2)	0.0477 (7)
H4	−0.3459	0.1484	0.4356	0.057*
C5	−0.1215 (3)	0.1633 (2)	0.3447 (2)	0.0372 (5)
C6	−0.0689 (3)	0.0228 (2)	0.3402 (3)	0.0443 (6)
H6A	−0.0768	−0.0254	0.4255	0.053*
H6B	−0.1383	−0.0067	0.2956	0.053*
C7	0.1666 (3)	−0.1270 (2)	0.2818 (3)	0.0440 (6)
C8	0.0924 (3)	−0.2336 (3)	0.3200 (3)	0.0506 (7)
H8	−0.0179	−0.2243	0.3452	0.061*
C9	0.1852 (4)	−0.3553 (3)	0.3201 (3)	0.0591 (8)
H9	0.1365	−0.4283	0.3450	0.071*
C10	0.3477 (4)	−0.3692 (3)	0.2842 (3)	0.0573 (8)
H10	0.4086	−0.4515	0.2868	0.069*
C11	0.4228 (3)	−0.2613 (3)	0.2436 (3)	0.0504 (7)
H11	0.5330	−0.2706	0.2177	0.060*
C12	0.3307 (3)	−0.1406 (2)	0.2426 (2)	0.0425 (6)
C13	0.5543 (3)	−0.0297 (3)	0.1678 (3)	0.0501 (7)
H13A	0.5946	−0.0789	0.0992	0.060*
H13B	0.6077	−0.0716	0.2392	0.060*
C14	0.5874 (3)	0.1051 (3)	0.1271 (2)	0.0431 (6)
C15	0.7396 (3)	0.1244 (3)	0.0648 (3)	0.0591 (8)
H15	0.8175	0.0546	0.0449	0.071*
C16	0.7728 (4)	0.2473 (4)	0.0331 (3)	0.0686 (10)
H16	0.8734	0.2624	−0.0089	0.082*
C17	0.6556 (4)	0.3484 (3)	0.0643 (3)	0.0654 (9)
H17	0.6768	0.4325	0.0463	0.078*
C18	0.5062 (4)	0.3233 (3)	0.1226 (3)	0.0542 (7)
H18	0.4265	0.3924	0.1414	0.065*
Co1	0.22927 (4)	0.16895 (4)	0.22727 (4)	0.04752 (14)
N1	−0.0169 (2)	0.2441 (2)	0.29360 (19)	0.0399 (5)
N2	0.4706 (2)	0.2029 (2)	0.15346 (19)	0.0417 (5)
N3	0.2919 (2)	0.2222 (3)	0.4483 (2)	0.0494 (6)
N4	0.1734 (3)	0.2913 (3)	−0.0118 (3)	0.0585 (7)
O1	0.0897 (2)	0.00028 (17)	0.2786 (2)	0.0574 (6)
O2	0.3876 (2)	−0.02515 (17)	0.2020 (2)	0.0546 (5)
O3	0.2818 (2)	0.1180 (2)	0.41373 (19)	0.0591 (5)
O4	0.3220 (3)	0.2203 (3)	0.5536 (2)	0.0902 (9)
O5	0.2706 (3)	0.3219 (2)	0.3710 (2)	0.0711 (6)
O6	0.1839 (2)	0.1745 (2)	0.04378 (19)	0.0600 (5)
O7	0.1811 (3)	0.3725 (3)	0.0520 (3)	0.0840 (8)
O8	0.1569 (3)	0.3154 (3)	−0.1235 (2)	0.1009 (10)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
C1	0.0457 (15)	0.0407 (15)	0.0580 (17)	−0.0091 (12)	−0.0044 (13)	−0.0063 (13)
C2	0.0514 (16)	0.0496 (17)	0.0618 (18)	0.0043 (13)	−0.0104 (14)	−0.0126 (14)
C3	0.0373 (14)	0.070 (2)	0.0531 (17)	0.0016 (14)	−0.0013 (13)	−0.0109 (15)
C4	0.0342 (13)	0.0594 (18)	0.0448 (15)	−0.0084 (12)	−0.0036 (11)	0.0005 (13)
C5	0.0324 (12)	0.0445 (14)	0.0340 (12)	−0.0096 (10)	−0.0045 (10)	−0.0021 (11)
C6	0.0319 (12)	0.0455 (15)	0.0522 (15)	−0.0147 (11)	0.0007 (11)	0.0009 (12)
C7	0.0453 (14)	0.0359 (14)	0.0508 (15)	−0.0122 (11)	−0.0026 (12)	−0.0061 (12)
C8	0.0515 (15)	0.0435 (16)	0.0602 (17)	−0.0209 (13)	−0.0058 (13)	−0.0064 (13)
C9	0.080 (2)	0.0359 (15)	0.068 (2)	−0.0218 (15)	−0.0189 (17)	−0.0047 (14)
C10	0.074 (2)	0.0354 (15)	0.0637 (19)	−0.0036 (14)	−0.0168 (16)	−0.0099 (13)
C11	0.0520 (16)	0.0444 (16)	0.0535 (16)	−0.0015 (13)	−0.0103 (13)	−0.0094 (13)
C12	0.0447 (14)	0.0338 (13)	0.0496 (15)	−0.0117 (11)	−0.0034 (12)	−0.0070 (11)
C13	0.0313 (12)	0.0565 (17)	0.0586 (17)	−0.0069 (12)	−0.0021 (12)	−0.0053 (14)
C14	0.0326 (12)	0.0611 (17)	0.0369 (13)	−0.0166 (12)	−0.0047 (10)	−0.0032 (12)
C15	0.0362 (14)	0.091 (2)	0.0493 (16)	−0.0195 (15)	−0.0026 (12)	−0.0036 (16)
C16	0.0487 (17)	0.106 (3)	0.0537 (18)	−0.0442 (19)	−0.0098 (14)	0.0134 (19)
C17	0.076 (2)	0.075 (2)	0.0544 (18)	−0.0507 (19)	−0.0187 (16)	0.0144 (16)
C18	0.0658 (18)	0.0554 (18)	0.0467 (15)	−0.0321 (15)	−0.0092 (14)	0.0016 (13)
Co1	0.03625 (19)	0.0440 (2)	0.0571 (2)	−0.01247 (15)	0.00876 (16)	−0.00555 (17)
N1	0.0346 (10)	0.0406 (12)	0.0432 (12)	−0.0088 (9)	−0.0029 (9)	−0.0040 (9)
N2	0.0417 (11)	0.0469 (13)	0.0372 (11)	−0.0196 (10)	−0.0020 (9)	−0.0005 (9)
N3	0.0327 (11)	0.0671 (17)	0.0470 (14)	−0.0159 (11)	0.0004 (10)	−0.0050 (13)
N4	0.0333 (11)	0.0727 (19)	0.0576 (16)	−0.0093 (12)	0.0030 (11)	0.0084 (14)
O1	0.0376 (9)	0.0350 (10)	0.0902 (15)	−0.0131 (8)	0.0185 (10)	−0.0082 (10)
O2	0.0345 (9)	0.0371 (10)	0.0862 (14)	−0.0092 (8)	0.0084 (9)	−0.0098 (9)
O3	0.0589 (12)	0.0505 (12)	0.0645 (13)	−0.0210 (10)	0.0053 (10)	−0.0035 (10)
O4	0.0743 (16)	0.159 (3)	0.0483 (13)	−0.0396 (17)	−0.0144 (12)	−0.0176 (15)
O5	0.0630 (13)	0.0517 (13)	0.0877 (16)	−0.0118 (10)	−0.0046 (12)	0.0102 (12)
O6	0.0488 (11)	0.0600 (13)	0.0646 (13)	−0.0102 (10)	0.0015 (10)	−0.0032 (11)
O7	0.0663 (15)	0.0733 (17)	0.114 (2)	−0.0218 (13)	−0.0009 (14)	−0.0223 (16)
O8	0.0746 (16)	0.156 (3)	0.0518 (14)	−0.0088 (17)	−0.0101 (12)	0.0219 (16)

Geometric parameters (Å, º) top

C1—N1	1.347 (3)	C13—O2	1.410 (3)
C1—C2	1.371 (4)	C13—C14	1.492 (4)
C1—H1	0.9300	C13—H13A	0.9700
C2—C3	1.379 (4)	C13—H13B	0.9700
C2—H2	0.9300	C14—N2	1.335 (3)
C3—C4	1.370 (4)	C14—C15	1.394 (3)
C3—H3	0.9300	C15—C16	1.366 (5)
C4—C5	1.388 (3)	C15—H15	0.9300
C4—H4	0.9300	C16—C17	1.373 (5)
C5—N1	1.343 (3)	C16—H16	0.9300
C5—C6	1.489 (4)	C17—C18	1.378 (4)
C6—O1	1.403 (3)	C17—H17	0.9300
C6—H6A	0.9700	C18—N2	1.348 (3)
C6—H6B	0.9700	C18—H18	0.9300
C7—C8	1.375 (4)	Co1—O6	2.101 (2)
C7—C12	1.386 (4)	Co1—O3	2.114 (2)
C7—O1	1.388 (3)	Co1—N1	2.156 (2)
C8—C9	1.387 (4)	Co1—N2	2.159 (2)
C8—H8	0.9300	Co1—O2	2.2825 (19)
C9—C10	1.369 (4)	Co1—O1	2.2876 (19)
C9—H9	0.9300	N3—O4	1.223 (3)
C10—C11	1.392 (4)	N3—O5	1.230 (3)
C10—H10	0.9300	N3—O3	1.268 (3)
C11—C12	1.374 (4)	N4—O8	1.226 (3)
C11—H11	0.9300	N4—O7	1.233 (4)
C12—O2	1.382 (3)	N4—O6	1.272 (3)

N1—C1—C2	123.0 (3)	C16—C15—C14	119.1 (3)
N1—C1—H1	118.5	C16—C15—H15	120.5
C2—C1—H1	118.5	C14—C15—H15	120.5
C1—C2—C3	119.1 (3)	C15—C16—C17	119.1 (3)
C1—C2—H2	120.4	C15—C16—H16	120.5
C3—C2—H2	120.4	C17—C16—H16	120.5
C4—C3—C2	118.7 (3)	C16—C17—C18	119.1 (3)
C4—C3—H3	120.7	C16—C17—H17	120.5
C2—C3—H3	120.7	C18—C17—H17	120.5
C3—C4—C5	119.5 (3)	N2—C18—C17	122.8 (3)
C3—C4—H4	120.2	N2—C18—H18	118.6
C5—C4—H4	120.2	C17—C18—H18	118.6
N1—C5—C4	122.1 (2)	O6—Co1—O3	167.12 (8)
N1—C5—C6	118.6 (2)	O6—Co1—N1	92.66 (8)
C4—C5—C6	119.3 (2)	O3—Co1—N1	91.78 (8)
O1—C6—C5	110.0 (2)	O6—Co1—N2	90.83 (8)
O1—C6—H6A	109.7	O3—Co1—N2	91.54 (8)
C5—C6—H6A	109.7	N1—Co1—N2	149.17 (8)
O1—C6—H6B	109.7	O6—Co1—O2	85.45 (9)
C5—C6—H6B	109.7	O3—Co1—O2	83.28 (9)
H6A—C6—H6B	108.2	N1—Co1—O2	139.03 (8)
C8—C7—C12	120.7 (2)	N2—Co1—O2	71.79 (8)
C8—C7—O1	125.1 (2)	O6—Co1—O1	84.09 (9)
C12—C7—O1	114.2 (2)	O3—Co1—O1	85.79 (8)
C7—C8—C9	118.7 (3)	N1—Co1—O1	72.04 (7)
C7—C8—H8	120.6	N2—Co1—O1	138.79 (8)
C9—C8—H8	120.6	O2—Co1—O1	67.05 (6)
C10—C9—C8	120.7 (3)	C5—N1—C1	117.6 (2)
C10—C9—H9	119.6	C5—N1—Co1	120.29 (17)
C8—C9—H9	119.6	C1—N1—Co1	121.93 (17)
C9—C10—C11	120.6 (3)	C14—N2—C18	117.5 (2)
C9—C10—H10	119.7	C14—N2—Co1	120.61 (17)
C11—C10—H10	119.7	C18—N2—Co1	121.64 (19)
C12—C11—C10	118.6 (3)	O4—N3—O5	123.2 (3)
C12—C11—H11	120.7	O4—N3—O3	120.1 (3)
C10—C11—H11	120.7	O5—N3—O3	116.7 (2)
C11—C12—O2	125.1 (2)	O8—N4—O7	124.7 (3)
C11—C12—C7	120.6 (2)	O8—N4—O6	118.6 (3)
O2—C12—C7	114.3 (2)	O7—N4—O6	116.7 (3)
O2—C13—C14	108.7 (2)	C7—O1—C6	117.91 (19)
O2—C13—H13A	110.0	C7—O1—Co1	121.70 (15)
C14—C13—H13A	110.0	C6—O1—Co1	118.14 (15)
O2—C13—H13B	110.0	C12—O2—C13	118.1 (2)
C14—C13—H13B	110.0	C12—O2—Co1	121.94 (14)
H13A—C13—H13B	108.3	C13—O2—Co1	118.68 (16)
N2—C14—C15	122.4 (3)	N3—O3—Co1	106.43 (17)
N2—C14—C13	118.6 (2)	N4—O6—Co1	107.7 (2)
C15—C14—C13	118.9 (3)

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C6—H6A···O3ⁱ	0.97	2.46	3.241 (3)	138
C13—H13A···O6ⁱⁱ	0.97	2.42	3.296 (4)	150
C17—H17···O7ⁱⁱⁱ	0.93	2.58	3.469 (4)	160
C18—H18···O7	0.93	2.56	2.970 (4)	107

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

Experimental details

Crystal data
Chemical formula	[Co(NO₃)₂(C₁₈H₁₆N₂O₂)]
M_r	475.28
Crystal system, space group	Triclinic, P1
Temperature (K)	291
a, b, c (Å)	8.6281 (17), 10.701 (2), 10.921 (2)
α, β, γ (°)	78.77 (3), 79.04 (3), 78.55 (3)
V (Å³)	957.2 (3)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	0.95
Crystal size (mm)	0.24 × 0.21 × 0.19

Data collection
Diffractometer	Rigaku R-AXIS RAPID diffractometer
Absorption correction	Multi-scan (ABSCOR; Higashi, 1995)
T_min, T_max	0.803, 0.840
No. of measured, independent and observed [I > 2σ(I)] reflections	9403, 4317, 2942
R_int	0.033
(sin θ/λ)_max (Å⁻¹)	0.649

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.044, 0.098, 1.04
No. of reflections	4317
No. of parameters	280
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.30, −0.44

Computer programs: RAPID-AUTO (Rigaku, 1998), CrystalStructure (Rigaku/MSC, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
C6—H6A···O3ⁱ	0.97	2.46	3.241 (3)	138
C13—H13A···O6ⁱⁱ	0.97	2.42	3.296 (4)	150
C17—H17···O7ⁱⁱⁱ	0.93	2.58	3.469 (4)	160
C18—H18···O7	0.93	2.56	2.970 (4)	107

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

Acknowledgements

The authors thank the Special Funds for the Research of Scientific and Technological Innovative Talents of Harbin Municipal Science and Technology Bureau (2009RFXXG027), the Science and Technology Planning Project of Heilongjiang Province (GZ08A401) and Heilongjiang University for supporting this study.

References

Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan. Google Scholar
Liu, Y., Yan, P.-F., Yu, Y.-H., Hou, G.-F. & Gao, J.-S. (2010a). Cryst. Growth Des. 10, 1559–1568. Web of Science CSD CrossRef CAS Google Scholar
Liu, Y., Yan, P.-F., Yu, Y.-H., Hou, G.-F. & Gao, J.-S. (2010b). Inorg. Chem. Commun. 13, 630–632. Web of Science CSD CrossRef CAS Google Scholar
Rigaku (1998). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan. Google Scholar
Rigaku/MSC (2002). CrystalClear. Rigaku/MSC Inc., The Woodlands, Texas, USA. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Yu, Y.-H., Gao, J.-S., Wang, L.-X., Liu, Y. & Hou, G.-F. (2010). Acta Cryst. E66, m872. Web of Science CSD CrossRef IUCr Journals Google Scholar