Bis(2,2′-bipyridyl-κ2N,N′)bis­(dicyanamido-κN)manganese(II)

Wang, H.; Wang, S.; Lang, Y.

doi:10.1107/S1600536812014183

metal-organic compounds

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ISSN: 2056-9890

Volume 68| Part 5| May 2012| Page m569

doi:10.1107/S1600536812014183

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Bis(2,2′-bipyridyl-κ²N,N′)bis(dicyanamido-κN)manganese(II)

Haixia Wang,^a ^* Shaohong Wang ^a and Yuehe Lang ^a

^aDepartment of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453007, People's Republic of China
^*Correspondence e-mail: xxhxwang@126.com

(Received 20 March 2012; accepted 1 April 2012; online 13 April 2012)

In title complex, [Mn(C₂N₃)₂(C₁₀H₈N₂)₂], the Mn^II ion is coordinated in a slightly distorted octahedral geometry by six N atoms. Four of the N atoms are from two chelating bipyridine ligands and two are from a pair of cis-coordinated dicyanamide ligands. The dihedral angle formed by the mean planes of the bipyridine rings is 85.93 (14)°. The central N atom of one of the dicyanamide ligands was refined as disordered over two sites with equal occupancies.

Related literature

For related structures, see: Lopes et al. (2011 ); Knight et al. (2010 ); McCann et al. (1998 ); Lumme & Lindell (1988 ); Li et al. (2002 ).

Experimental

Crystal data

[Mn(C₂N₃)₂(C₁₀H₈N₂)₂]
M_r = 499.41
Monoclinic, P 2₁ /c
a = 9.232 (3) Å
b = 16.144 (6) Å
c = 16.670 (6) Å
β = 104.439 (6)°
V = 2406.0 (15) Å³
Z = 4
Mo Kα radiation
μ = 0.58 mm⁻¹
T = 293 K
0.31 × 0.29 × 0.24 mm

Data collection

Bruker APEXII diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ) T_min = 0.840, T_max = 0.873
11521 measured reflections
4220 independent reflections
2653 reflections with I > 2σ(I)
R_int = 0.040

Refinement

R[F² > 2σ(F²)] = 0.056
wR(F²) = 0.178
S = 1.03
4220 reflections
325 parameters
H-atom parameters constrained
Δρ_max = 0.91 e Å⁻³
Δρ_min = −0.79 e Å⁻³

Data collection: APEX2 (Bruker, 2004 ); cell refinement: SAINT (Bruker, 2001 ); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009 ); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).

Supporting information

Crystal structure: contains datablocks I, global. DOI: 10.1107/S1600536812014183/lh5441sup1.cif

Structure factors: contains datablock I. DOI: 10.1107/S1600536812014183/lh5441Isup2.hkl

checkCIF report

Comment top

Due to the excellent chelating abilities to almost all the transition metal ions, 2,2'-bipyridine and its analogs have been widely introduced into coordination chemistry to construct homo- or heterometallic complexes with various structures. Here, we present the crystal structure of the title complex.

The molecular structure of the title complex is shown in figure 1. The coordination of the Mn^II ion is slightly distorted octahedral, for which four sites are from two 2,2-bipyridine ligands and the other two are occupied by two N atoms of the two dicyanamido ligands. The distances between the central Mn^II ion and the N atoms of the 2,2'-bipyridine ligands are in agreement with the Mn—N bond lengths in other manganese complexes contaning bipyridine ligands (Lopes et al., 2011; Knight et al., 2010; McCann et al., 1998; Lumme & Lindell, 1988; Li et al., 2002). The Mn—N_dicyanamido bond lengths are slightly shorter than the Mn—N_bipyridine lengths.

Related literature top

For related structures, see: Lopes et al. (2011); Knight et al. (2010); McCann et al. (1998); Lumme & Lindell (1988); Li et al. (2002).

Experimental top

The synthesis of the title complex was carried out by reacting Mn(ClO₄)₂.6H₂O, 2,2'-bipyridine and sodium dicyanamide in a molar ratio of 1:2:2 in methanol. After the mixture was stirred for about 15 minutes at room temperature, it was filtrated. The filtrate was left to slowly evaperate in air for about one week to obtain single-crystals suitable for X-ray diffraction with the yield about 50%.

Computing details top

Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).

Figures top

Fig. 1. The molecular structure of the title complex with 30% displacement ellipsoids. The disorder is not shown.

Bis(2,2'-bipyridyl-κ²N,N')bis(dicyanamido- κN)manganese(II) top

Crystal data top

[Mn(C₂N₃)₂(C₁₀H₈N₂)₂]	F(000) = 1020
M_r = 499.41	D_x = 1.379 Mg m⁻³
Monoclinic, P2₁/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybc	Cell parameters from 2314 reflections
a = 9.232 (3) Å	θ = 2.7–26.9°
b = 16.144 (6) Å	µ = 0.58 mm⁻¹
c = 16.670 (6) Å	T = 293 K
β = 104.439 (6)°	Block, yellow
V = 2406.0 (15) Å³	0.31 × 0.29 × 0.24 mm
Z = 4

Data collection top

Bruker APEXII diffractometer	4220 independent reflections
Radiation source: fine-focus sealed tube	2653 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.040
ϕ and ω scans	θ_max = 25.0°, θ_min = 1.8°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	h = −10→10
T_min = 0.840, T_max = 0.873	k = −19→17
11521 measured reflections	l = −9→19

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)] = 0.056	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.178	H-atom parameters constrained
S = 1.03	w = 1/[σ²(F_o²) + (0.0716P)² + 2.6518P] where P = (F_o² + 2F_c²)/3
4220 reflections	(Δ/σ)_max = 0.001
325 parameters	Δρ_max = 0.91 e Å⁻³
0 restraints	Δρ_min = −0.79 e Å⁻³

Crystal data top

[Mn(C₂N₃)₂(C₁₀H₈N₂)₂]	V = 2406.0 (15) Å³
M_r = 499.41	Z = 4
Monoclinic, P2₁/c	Mo Kα radiation
a = 9.232 (3) Å	µ = 0.58 mm⁻¹
b = 16.144 (6) Å	T = 293 K
c = 16.670 (6) Å	0.31 × 0.29 × 0.24 mm
β = 104.439 (6)°

Data collection top

Bruker APEXII diffractometer	4220 independent reflections
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	2653 reflections with I > 2σ(I)
T_min = 0.840, T_max = 0.873	R_int = 0.040
11521 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.056	0 restraints
wR(F²) = 0.178	H-atom parameters constrained
S = 1.03	Δρ_max = 0.91 e Å⁻³
4220 reflections	Δρ_min = −0.79 e Å⁻³
325 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	Occ. (<1)
Mn1	0.49855 (7)	0.78202 (4)	0.88004 (4)	0.0570 (3)
N1	0.3997 (4)	0.6864 (2)	0.7812 (2)	0.0592 (9)
N2	0.6547 (4)	0.7703 (2)	0.7951 (2)	0.0583 (9)
N3	0.6062 (4)	0.6721 (2)	0.9643 (2)	0.0601 (9)
N4	0.3479 (4)	0.7467 (2)	0.9633 (2)	0.0590 (9)
N5	0.6450 (5)	0.8677 (3)	0.9614 (3)	0.0847 (13)
N6	0.7237 (11)	0.9877 (6)	1.0436 (6)	0.092 (3)	0.50
N6A	0.8534 (16)	0.9247 (8)	1.0702 (7)	0.141 (5)	0.50
N7	0.9807 (6)	1.0470 (3)	1.0971 (4)	0.121 (2)
N8	0.3514 (5)	0.8769 (3)	0.8116 (3)	0.0906 (13)
N9	0.2729 (7)	0.9927 (3)	0.7186 (4)	0.1155 (17)
N10	0.0440 (6)	1.0630 (4)	0.6652 (4)	0.1195 (19)
C1	0.2698 (5)	0.6462 (3)	0.7764 (3)	0.0737 (13)
H1	0.2145	0.6602	0.8141	0.088*
C2	0.2151 (7)	0.5859 (4)	0.7192 (3)	0.0963 (18)
H2	0.1260	0.5586	0.7187	0.116*
C3	0.2946 (7)	0.5671 (4)	0.6633 (4)	0.111 (2)
H3	0.2586	0.5275	0.6227	0.134*
C4	0.4294 (6)	0.6066 (3)	0.6663 (3)	0.0905 (17)
H4	0.4857	0.5926	0.6292	0.109*
C5	0.4786 (5)	0.6672 (3)	0.7258 (2)	0.0587 (11)
C6	0.6193 (5)	0.7143 (3)	0.7328 (2)	0.0554 (10)
C7	0.7090 (6)	0.7030 (3)	0.6796 (3)	0.0839 (15)
H7	0.6829	0.6646	0.6368	0.101*
C8	0.8388 (7)	0.7491 (4)	0.6898 (4)	0.1022 (19)
H8	0.9012	0.7414	0.6544	0.123*
C9	0.8740 (6)	0.8057 (4)	0.7518 (3)	0.0873 (16)
H9	0.9601	0.8376	0.7591	0.105*
C10	0.7813 (5)	0.8149 (3)	0.8032 (3)	0.0735 (13)
H10	0.8064	0.8535	0.8458	0.088*
C11	0.7362 (5)	0.6361 (3)	0.9617 (3)	0.0779 (14)
H11	0.7867	0.6552	0.9236	0.094*
C12	0.7970 (6)	0.5724 (4)	1.0131 (4)	0.0931 (17)
H12	0.8868	0.5486	1.0092	0.112*
C13	0.7265 (7)	0.5440 (4)	1.0694 (4)	0.0966 (18)
H13	0.7674	0.5010	1.1049	0.116*
C14	0.5926 (6)	0.5798 (3)	1.0735 (3)	0.0856 (15)
H14	0.5419	0.5612	1.1118	0.103*
C15	0.5350 (5)	0.6441 (3)	1.0195 (3)	0.0579 (10)
C16	0.3902 (5)	0.6855 (3)	1.0189 (3)	0.0592 (11)
C17	0.3024 (6)	0.6625 (4)	1.0715 (3)	0.0934 (17)
H17	0.3327	0.6197	1.1093	0.112*
C18	0.1697 (7)	0.7035 (4)	1.0674 (4)	0.117 (2)
H18	0.1096	0.6886	1.1023	0.141*
C19	0.1276 (6)	0.7660 (4)	1.0117 (4)	0.0999 (19)
H19	0.0392	0.7949	1.0086	0.120*
C20	0.2176 (5)	0.7856 (3)	0.9603 (3)	0.0763 (14)
H20	0.1874	0.8276	0.9217	0.092*
C21	0.7146 (8)	0.9118 (4)	1.0047 (3)	0.111 (2)
C22	0.8884 (9)	1.0045 (4)	1.0761 (4)	0.110 (2)
C23	0.3004 (7)	0.9280 (4)	0.7692 (4)	0.0995 (19)
C24	0.1368 (8)	1.0230 (4)	0.6921 (4)	0.0939 (18)

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Mn1	0.0651 (4)	0.0580 (4)	0.0505 (4)	−0.0031 (3)	0.0195 (3)	−0.0076 (3)
N1	0.061 (2)	0.064 (2)	0.0530 (19)	−0.0087 (18)	0.0151 (17)	−0.0104 (17)
N2	0.057 (2)	0.068 (2)	0.0509 (19)	−0.0071 (17)	0.0158 (16)	−0.0019 (17)
N3	0.061 (2)	0.064 (2)	0.057 (2)	0.0070 (18)	0.0188 (18)	−0.0044 (18)
N4	0.063 (2)	0.061 (2)	0.057 (2)	0.0064 (18)	0.0209 (18)	−0.0025 (18)
N5	0.116 (4)	0.076 (3)	0.063 (2)	−0.029 (3)	0.025 (2)	−0.012 (2)
N6	0.095 (7)	0.090 (6)	0.102 (7)	−0.020 (6)	0.043 (6)	−0.047 (6)
N6A	0.189 (13)	0.124 (10)	0.090 (7)	−0.084 (10)	−0.006 (8)	0.027 (7)
N7	0.090 (4)	0.086 (4)	0.154 (5)	0.011 (3)	−0.029 (4)	−0.035 (3)
N8	0.108 (4)	0.084 (3)	0.081 (3)	0.023 (3)	0.026 (3)	0.011 (3)
N9	0.123 (4)	0.112 (4)	0.115 (4)	0.027 (4)	0.036 (4)	0.029 (4)
N10	0.102 (4)	0.140 (5)	0.118 (4)	0.010 (4)	0.030 (4)	0.028 (4)
C1	0.070 (3)	0.094 (3)	0.060 (3)	−0.023 (3)	0.022 (2)	−0.018 (3)
C2	0.098 (4)	0.112 (4)	0.084 (4)	−0.050 (4)	0.032 (3)	−0.035 (3)
C3	0.129 (5)	0.116 (5)	0.093 (4)	−0.058 (4)	0.036 (4)	−0.054 (4)
C4	0.104 (4)	0.101 (4)	0.076 (3)	−0.030 (3)	0.040 (3)	−0.040 (3)
C5	0.065 (3)	0.063 (3)	0.048 (2)	−0.005 (2)	0.015 (2)	−0.007 (2)
C6	0.060 (3)	0.060 (2)	0.046 (2)	0.000 (2)	0.0113 (19)	−0.003 (2)
C7	0.089 (4)	0.099 (4)	0.074 (3)	−0.016 (3)	0.039 (3)	−0.022 (3)
C8	0.098 (4)	0.132 (5)	0.096 (4)	−0.023 (4)	0.061 (4)	−0.024 (4)
C9	0.068 (3)	0.115 (4)	0.084 (4)	−0.025 (3)	0.029 (3)	−0.005 (3)
C10	0.070 (3)	0.089 (3)	0.062 (3)	−0.019 (3)	0.017 (2)	−0.008 (3)
C11	0.071 (3)	0.085 (3)	0.082 (3)	0.020 (3)	0.028 (3)	0.003 (3)
C12	0.075 (4)	0.096 (4)	0.103 (4)	0.033 (3)	0.012 (3)	0.002 (4)
C13	0.086 (4)	0.090 (4)	0.110 (5)	0.025 (3)	0.019 (4)	0.032 (4)
C14	0.089 (4)	0.081 (3)	0.085 (3)	0.007 (3)	0.020 (3)	0.020 (3)
C15	0.061 (3)	0.054 (2)	0.057 (2)	0.000 (2)	0.012 (2)	−0.004 (2)
C16	0.063 (3)	0.063 (3)	0.054 (2)	−0.003 (2)	0.017 (2)	−0.006 (2)
C17	0.089 (4)	0.107 (4)	0.097 (4)	0.013 (3)	0.046 (3)	0.031 (3)
C18	0.102 (5)	0.144 (6)	0.132 (5)	0.027 (4)	0.078 (4)	0.039 (5)
C19	0.083 (4)	0.115 (5)	0.116 (5)	0.025 (3)	0.052 (4)	0.005 (4)
C20	0.074 (3)	0.081 (3)	0.080 (3)	0.020 (3)	0.031 (3)	0.001 (3)
C21	0.178 (7)	0.111 (5)	0.053 (3)	−0.087 (5)	0.044 (4)	−0.023 (3)
C22	0.162 (7)	0.082 (4)	0.073 (4)	−0.045 (4)	0.004 (4)	−0.008 (3)
C23	0.114 (5)	0.096 (4)	0.096 (4)	0.032 (4)	0.040 (4)	0.024 (4)
C24	0.104 (5)	0.092 (4)	0.093 (4)	0.027 (4)	0.038 (4)	0.025 (3)

Geometric parameters (Å, º) top

Mn1—N5	2.161 (5)	C3—H3	0.9300
Mn1—N8	2.172 (5)	C4—C5	1.387 (6)
Mn1—N2	2.267 (3)	C4—H4	0.9300
Mn1—N4	2.270 (3)	C5—C6	1.485 (6)
Mn1—N1	2.277 (3)	C6—C7	1.369 (6)
Mn1—N3	2.326 (4)	C7—C8	1.384 (7)
N1—C5	1.346 (5)	C7—H7	0.9300
N1—C1	1.348 (5)	C8—C9	1.357 (8)
N2—C10	1.350 (5)	C8—H8	0.9300
N2—C6	1.354 (5)	C9—C10	1.362 (6)
N3—C15	1.337 (5)	C9—H9	0.9300
N3—C11	1.344 (5)	C10—H10	0.9300
N4—C16	1.343 (5)	C11—C12	1.366 (7)
N4—C20	1.347 (5)	C11—H11	0.9300
N5—C21	1.099 (6)	C12—C13	1.349 (8)
N6—C21	1.379 (10)	C12—H12	0.9300
N6—C22	1.506 (12)	C13—C14	1.381 (7)
N6A—C22	1.326 (12)	C13—H13	0.9300
N6A—C21	1.476 (13)	C14—C15	1.391 (6)
N7—C22	1.082 (7)	C14—H14	0.9300
N8—C23	1.112 (7)	C15—C16	1.492 (6)
N9—C24	1.317 (8)	C16—C17	1.386 (6)
N9—C23	1.328 (8)	C17—C18	1.379 (7)
N10—C24	1.077 (7)	C17—H17	0.9300
C1—C2	1.368 (7)	C18—C19	1.359 (8)
C1—H1	0.9300	C18—H18	0.9300
C2—C3	1.357 (7)	C19—C20	1.371 (7)
C2—H2	0.9300	C19—H19	0.9300
C3—C4	1.387 (7)	C20—H20	0.9300

N5—Mn1—N8	95.14 (19)	C6—C7—C8	119.6 (5)
N5—Mn1—N2	92.87 (15)	C6—C7—H7	120.2
N8—Mn1—N2	98.21 (15)	C8—C7—H7	120.2
N5—Mn1—N4	99.18 (14)	C9—C8—C7	119.4 (5)
N8—Mn1—N4	95.75 (16)	C9—C8—H8	120.3
N2—Mn1—N4	160.64 (13)	C7—C8—H8	120.3
N5—Mn1—N1	164.60 (14)	C8—C9—C10	118.9 (5)
N8—Mn1—N1	90.74 (16)	C8—C9—H9	120.5
N2—Mn1—N1	72.18 (12)	C10—C9—H9	120.5
N4—Mn1—N1	94.36 (13)	N2—C10—C9	122.9 (5)
N5—Mn1—N3	90.18 (15)	N2—C10—H10	118.6
N8—Mn1—N3	166.36 (15)	C9—C10—H10	118.6
N2—Mn1—N3	94.05 (12)	N3—C11—C12	122.5 (5)
N4—Mn1—N3	70.96 (12)	N3—C11—H11	118.8
N1—Mn1—N3	87.33 (13)	C12—C11—H11	118.8
C5—N1—C1	118.3 (4)	C13—C12—C11	119.8 (5)
C5—N1—Mn1	117.7 (3)	C13—C12—H12	120.1
C1—N1—Mn1	124.0 (3)	C11—C12—H12	120.1
C10—N2—C6	118.0 (4)	C12—C13—C14	119.1 (5)
C10—N2—Mn1	124.2 (3)	C12—C13—H13	120.5
C6—N2—Mn1	117.7 (3)	C14—C13—H13	120.5
C15—N3—C11	118.2 (4)	C13—C14—C15	118.9 (5)
C15—N3—Mn1	117.6 (3)	C13—C14—H14	120.6
C11—N3—Mn1	124.2 (3)	C15—C14—H14	120.6
C16—N4—C20	118.2 (4)	N3—C15—C14	121.6 (4)
C16—N4—Mn1	119.3 (3)	N3—C15—C16	116.0 (4)
C20—N4—Mn1	122.5 (3)	C14—C15—C16	122.5 (4)
C21—N5—Mn1	176.8 (5)	N4—C16—C17	121.2 (4)
C21—N6—C22	105.5 (8)	N4—C16—C15	116.1 (4)
C22—N6A—C21	110.0 (10)	C17—C16—C15	122.7 (4)
C23—N8—Mn1	165.3 (5)	C18—C17—C16	119.5 (5)
C24—N9—C23	121.4 (6)	C18—C17—H17	120.3
N1—C1—C2	123.5 (4)	C16—C17—H17	120.3
N1—C1—H1	118.2	C19—C18—C17	119.3 (5)
C2—C1—H1	118.2	C19—C18—H18	120.3
C3—C2—C1	117.9 (5)	C17—C18—H18	120.3
C3—C2—H2	121.0	C18—C19—C20	118.9 (5)
C1—C2—H2	121.0	C18—C19—H19	120.6
C2—C3—C4	120.4 (5)	C20—C19—H19	120.6
C2—C3—H3	119.8	N4—C20—C19	123.0 (5)
C4—C3—H3	119.8	N4—C20—H20	118.5
C5—C4—C3	118.7 (5)	C19—C20—H20	118.5
C5—C4—H4	120.6	N5—C21—N6	147.3 (9)
C3—C4—H4	120.6	N5—C21—N6A	146.5 (10)
N1—C5—C4	121.1 (4)	N6—C21—N6A	65.6 (7)
N1—C5—C6	116.2 (3)	N7—C22—N6A	143.0 (11)
C4—C5—C6	122.8 (4)	N7—C22—N6	150.9 (8)
N2—C6—C7	121.1 (4)	N6A—C22—N6	65.9 (7)
N2—C6—C5	116.2 (3)	N8—C23—N9	166.4 (7)
C7—C6—C5	122.7 (4)	N10—C24—N9	162.7 (8)

Experimental details

Crystal data
Chemical formula	[Mn(C₂N₃)₂(C₁₀H₈N₂)₂]
M_r	499.41
Crystal system, space group	Monoclinic, P2₁/c
Temperature (K)	293
a, b, c (Å)	9.232 (3), 16.144 (6), 16.670 (6)
β (°)	104.439 (6)
V (Å³)	2406.0 (15)
Z	4
Radiation type	Mo Kα
µ (mm⁻¹)	0.58
Crystal size (mm)	0.31 × 0.29 × 0.24

Data collection
Diffractometer	Bruker APEXII diffractometer
Absorption correction	Multi-scan (SADABS; Sheldrick, 1996)
T_min, T_max	0.840, 0.873
No. of measured, independent and observed [I > 2σ(I)] reflections	11521, 4220, 2653
R_int	0.040
(sin θ/λ)_max (Å⁻¹)	0.595

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.056, 0.178, 1.03
No. of reflections	4220
No. of parameters	325
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.91, −0.79

Computer programs: APEX2 (Bruker, 2004), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009), SHELXTL (Sheldrick, 2008).

Acknowledgements

This work was supported by the Basic and Frontier Research Programs of Henan Province (No. 092300410194)

References

Bruker (2001). SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Bruker (2004). APEX2. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Knight, J. C., Amoroso, A. J., Edwards, P. G., Prabaharan, R. & Singh, N. (2010). Dalton Trans. 39, 8925–8936. Web of Science CSD CrossRef CAS PubMed Google Scholar
Li, Z. Y., Xu, D. J., Nie, J. J., Wu, Z. Y., Wu, J. Y. & Chiang, M. (2002). J. Coord. Chem. 55, 1155–1160. Web of Science CSD CrossRef CAS Google Scholar
Lopes, L. B., Corrêa, C. C. & Diniz, R. (2011). Acta Cryst. E67, m906–m907. Web of Science CSD CrossRef IUCr Journals Google Scholar
Lumme, P. O. & Lindell, E. (1988). Acta Cryst. C44, 463–465. CSD CrossRef CAS Web of Science IUCr Journals Google Scholar
McCann, S., McCann, M., Casey, M. T., Jackman, M., Devereux, M. & McKee, V. (1998). Inorg. Chim. Acta, 279, 24–29. Web of Science CSD CrossRef CAS Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS IUCr Journals Google Scholar