metal-organic compounds
Poly[bis[μ2-1,4-bis(1H-imidazol-1-yl)butane]dichloridonickel(II)]
aDepartment of Chemistry, College of Science, North University of China, Taiyuan Shanxi 030051, People's Republic of China
*Correspondence e-mail: jfsong0129@gmail.com
The 2(C10H14N4)2]n, consists of one Ni2+ ion which is located on an inversion center, one 1,4-bis(imidazol-1-yl)butane (bimb) and one chloride ion. The Ni2+ ion exhibits a distorted octahedral coordination environment defined by four N atoms from four bimb ligands in the equatorial plane and two chloride ions in axial positions. The bridging coordination mode of the bimb ligands leads to the formation of interpenetrating square Ni4(bimb)4 units that are arranged parallel to (001). The separation between the Ni atoms in these units is 13.740 (3) Å.
of the title compound, [NiClRelated literature
For related structures based on bis(imidazole)alkane ligands, see: Ballester et al. (1998); Li et al. (2004); Zhu et al. (2006, 2009).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2004); cell SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2000); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536811044448/wm2543sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811044448/wm2543Isup2.hkl
A solution of ethyl 2,2-difluoro-2-(pyridin-2-yl)acetate (10.0 mg, 0.05 mmol) in 2 ml ethanol was directly mixed with a solution of NiCl2 in 1 ml water (0.10 mol dm-3) at room temperature in a 15 ml beaker. A solution of bimb (9.5 mg, 0.05 mmol) in 3 ml e thanol in another 15 ml beaker was added the above-mentioned mixture. Then 2M HCl was added until the pH value of mixture arrives at 4.5. The resulted mixture was transferred and sealed in a 25 ml Teflon-lined stainless steel reactor, and heated at 85 °C for 72 h. Upon cooling to room temperature, the light green crystals were filtered and washed with water and ethanol.
All H atoms were located in a difference Fourier map refined as riding, with Uiso(H) = 1.2Ueq(C).
Data collection: SMART (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2000); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).[NiCl2(C10H14N4)2] | F(000) = 532 |
Mr = 510.11 | Dx = 1.552 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 2469 reflections |
a = 7.4572 (15) Å | θ = 3.1–27.5° |
b = 18.297 (4) Å | µ = 1.16 mm−1 |
c = 8.7321 (17) Å | T = 293 K |
β = 113.60 (3)° | Block, green |
V = 1091.8 (4) Å3 | 0.20 × 0.15 × 0.10 mm |
Z = 2 |
Bruker SMART APEX CCD diffractometer | 2469 independent reflections |
Radiation source: fine-focus sealed tube | 2158 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.037 |
ω scans | θmax = 27.5°, θmin = 3.1° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −9→9 |
Tmin = 0.801, Tmax = 0.893 | k = −23→23 |
10382 measured reflections | l = −10→11 |
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)] = 0.037 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.089 | H-atom parameters constrained |
S = 1.11 | w = 1/[σ2(Fo2) + (0.0274P)2 + 1.1307P] where P = (Fo2 + 2Fc2)/3 |
2469 reflections | (Δ/σ)max < 0.001 |
142 parameters | Δρmax = 0.33 e Å−3 |
0 restraints | Δρmin = −0.37 e Å−3 |
[NiCl2(C10H14N4)2] | V = 1091.8 (4) Å3 |
Mr = 510.11 | Z = 2 |
Monoclinic, P21/n | Mo Kα radiation |
a = 7.4572 (15) Å | µ = 1.16 mm−1 |
b = 18.297 (4) Å | T = 293 K |
c = 8.7321 (17) Å | 0.20 × 0.15 × 0.10 mm |
β = 113.60 (3)° |
Bruker SMART APEX CCD diffractometer | 2469 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 2158 reflections with I > 2σ(I) |
Tmin = 0.801, Tmax = 0.893 | Rint = 0.037 |
10382 measured reflections |
R[F2 > 2σ(F2)] = 0.037 | 0 restraints |
wR(F2) = 0.089 | H-atom parameters constrained |
S = 1.11 | Δρmax = 0.33 e Å−3 |
2469 reflections | Δρmin = −0.37 e Å−3 |
142 parameters |
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. |
x | y | z | Uiso*/Ueq | ||
N4 | 0.1415 (3) | 0.10177 (10) | 0.0471 (3) | 0.0289 (4) | |
C9 | 0.0664 (4) | 0.16648 (14) | 0.0733 (4) | 0.0440 (7) | |
H9 | −0.0615 | 0.1733 | 0.0630 | 0.053* | |
C10 | 0.2054 (4) | 0.21922 (14) | 0.1165 (4) | 0.0456 (7) | |
H10 | 0.1917 | 0.2678 | 0.1415 | 0.055* | |
C8 | 0.3245 (3) | 0.11623 (13) | 0.0740 (3) | 0.0298 (5) | |
H8 | 0.4118 | 0.0819 | 0.0650 | 0.036* | |
N3 | 0.3700 (3) | 0.18646 (11) | 0.1160 (3) | 0.0335 (5) | |
C7 | 0.5640 (4) | 0.21996 (15) | 0.1668 (4) | 0.0457 (7) | |
H7A | 0.6545 | 0.1835 | 0.1592 | 0.055* | |
H7B | 0.6092 | 0.2347 | 0.2829 | 0.055* | |
C6 | 0.5694 (4) | 0.28506 (14) | 0.0646 (3) | 0.0383 (6) | |
H6A | 0.4725 | 0.3204 | 0.0647 | 0.046* | |
H6B | 0.5361 | 0.2699 | −0.0500 | 0.046* | |
Ni1 | 1.5000 | 0.5000 | 0.5000 | 0.02315 (12) | |
Cl1 | 1.30895 (8) | 0.46277 (3) | 0.66987 (8) | 0.03495 (16) | |
N1 | 1.2760 (3) | 0.45639 (10) | 0.2843 (2) | 0.0269 (4) | |
N2 | 0.9912 (3) | 0.41380 (11) | 0.1097 (3) | 0.0323 (4) | |
C3 | 1.0969 (3) | 0.43850 (14) | 0.2651 (3) | 0.0329 (5) | |
H3 | 1.0496 | 0.4425 | 0.3485 | 0.039* | |
C1 | 1.2840 (4) | 0.44240 (13) | 0.1329 (3) | 0.0320 (5) | |
H1 | 1.3929 | 0.4500 | 0.1083 | 0.038* | |
C2 | 1.1099 (4) | 0.41598 (13) | 0.0245 (3) | 0.0355 (5) | |
H2 | 1.0776 | 0.4021 | −0.0859 | 0.043* | |
C5 | 0.7692 (4) | 0.32062 (14) | 0.1322 (4) | 0.0414 (6) | |
H5A | 0.8052 | 0.3315 | 0.2495 | 0.050* | |
H5B | 0.8631 | 0.2855 | 0.1253 | 0.050* | |
C4 | 0.7874 (4) | 0.38856 (16) | 0.0476 (4) | 0.0481 (7) | |
H4A | 0.7393 | 0.3799 | −0.0717 | 0.058* | |
H4B | 0.7072 | 0.4264 | 0.0661 | 0.058* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N4 | 0.0205 (10) | 0.0275 (10) | 0.0382 (11) | 0.0007 (7) | 0.0113 (9) | 0.0027 (8) |
C9 | 0.0290 (13) | 0.0301 (13) | 0.079 (2) | 0.0015 (10) | 0.0275 (14) | 0.0015 (13) |
C10 | 0.0374 (15) | 0.0263 (12) | 0.080 (2) | −0.0011 (10) | 0.0303 (15) | −0.0013 (13) |
C8 | 0.0236 (12) | 0.0295 (11) | 0.0370 (13) | 0.0006 (9) | 0.0128 (10) | 0.0031 (9) |
N3 | 0.0224 (10) | 0.0295 (10) | 0.0472 (12) | −0.0034 (8) | 0.0126 (9) | 0.0058 (9) |
C7 | 0.0240 (13) | 0.0422 (15) | 0.0624 (18) | −0.0085 (11) | 0.0085 (13) | 0.0115 (13) |
C6 | 0.0279 (13) | 0.0359 (13) | 0.0446 (14) | −0.0107 (10) | 0.0078 (11) | 0.0010 (11) |
Ni1 | 0.01420 (19) | 0.0230 (2) | 0.0300 (2) | −0.00183 (14) | 0.00640 (16) | −0.00287 (15) |
Cl1 | 0.0247 (3) | 0.0419 (3) | 0.0393 (3) | −0.0057 (2) | 0.0139 (3) | −0.0037 (2) |
N1 | 0.0174 (9) | 0.0279 (9) | 0.0321 (10) | −0.0033 (7) | 0.0066 (8) | −0.0038 (8) |
N2 | 0.0238 (10) | 0.0306 (10) | 0.0337 (10) | −0.0097 (8) | 0.0023 (9) | 0.0023 (8) |
C3 | 0.0225 (12) | 0.0410 (13) | 0.0327 (12) | −0.0079 (10) | 0.0086 (10) | −0.0021 (10) |
C1 | 0.0283 (13) | 0.0310 (12) | 0.0390 (13) | −0.0020 (9) | 0.0157 (11) | −0.0035 (10) |
C2 | 0.0390 (14) | 0.0321 (12) | 0.0305 (12) | −0.0053 (10) | 0.0089 (11) | −0.0053 (10) |
C5 | 0.0253 (13) | 0.0344 (13) | 0.0570 (17) | −0.0059 (10) | 0.0086 (12) | 0.0077 (12) |
C4 | 0.0254 (13) | 0.0481 (16) | 0.0522 (16) | −0.0159 (11) | −0.0041 (12) | 0.0121 (13) |
N4—C8 | 1.316 (3) | Ni1—N1iv | 2.111 (2) |
N4—C9 | 1.368 (3) | Ni1—N1 | 2.111 (2) |
N4—Ni1i | 2.0980 (19) | Ni1—Cl1 | 2.5270 (8) |
C9—C10 | 1.355 (4) | Ni1—Cl1iv | 2.5270 (8) |
C9—H9 | 0.9300 | N1—C3 | 1.319 (3) |
C10—N3 | 1.368 (3) | N1—C1 | 1.371 (3) |
C10—H10 | 0.9300 | N2—C3 | 1.346 (3) |
C8—N3 | 1.342 (3) | N2—C2 | 1.366 (3) |
C8—H8 | 0.9300 | N2—C4 | 1.469 (3) |
N3—C7 | 1.467 (3) | C3—H3 | 0.9300 |
C7—C6 | 1.499 (4) | C1—C2 | 1.353 (3) |
C7—H7A | 0.9700 | C1—H1 | 0.9300 |
C7—H7B | 0.9700 | C2—H2 | 0.9300 |
C6—C5 | 1.512 (3) | C5—C4 | 1.480 (4) |
C6—H6A | 0.9700 | C5—H5A | 0.9700 |
C6—H6B | 0.9700 | C5—H5B | 0.9700 |
Ni1—N4ii | 2.0980 (19) | C4—H4A | 0.9700 |
Ni1—N4iii | 2.0980 (19) | C4—H4B | 0.9700 |
C8—N4—C9 | 105.1 (2) | N1iv—Ni1—Cl1 | 90.51 (6) |
C8—N4—Ni1i | 128.15 (16) | N1—Ni1—Cl1 | 89.49 (6) |
C9—N4—Ni1i | 126.43 (16) | N4ii—Ni1—Cl1iv | 89.81 (6) |
C10—C9—N4 | 110.2 (2) | N4iii—Ni1—Cl1iv | 90.19 (6) |
C10—C9—H9 | 124.9 | N1iv—Ni1—Cl1iv | 89.49 (6) |
N4—C9—H9 | 124.9 | N1—Ni1—Cl1iv | 90.51 (6) |
C9—C10—N3 | 105.9 (2) | Cl1—Ni1—Cl1iv | 180.0 |
C9—C10—H10 | 127.0 | C3—N1—C1 | 105.3 (2) |
N3—C10—H10 | 127.0 | C3—N1—Ni1 | 127.33 (17) |
N4—C8—N3 | 111.9 (2) | C1—N1—Ni1 | 127.36 (15) |
N4—C8—H8 | 124.1 | C3—N2—C2 | 107.1 (2) |
N3—C8—H8 | 124.1 | C3—N2—C4 | 125.4 (2) |
C8—N3—C10 | 106.9 (2) | C2—N2—C4 | 127.5 (2) |
C8—N3—C7 | 126.4 (2) | N1—C3—N2 | 111.4 (2) |
C10—N3—C7 | 126.4 (2) | N1—C3—H3 | 124.3 |
N3—C7—C6 | 114.2 (2) | N2—C3—H3 | 124.3 |
N3—C7—H7A | 108.7 | C2—C1—N1 | 110.0 (2) |
C6—C7—H7A | 108.7 | C2—C1—H1 | 125.0 |
N3—C7—H7B | 108.7 | N1—C1—H1 | 125.0 |
C6—C7—H7B | 108.7 | C1—C2—N2 | 106.2 (2) |
H7A—C7—H7B | 107.6 | C1—C2—H2 | 126.9 |
C7—C6—C5 | 111.5 (2) | N2—C2—H2 | 126.9 |
C7—C6—H6A | 109.3 | C4—C5—C6 | 116.1 (2) |
C5—C6—H6A | 109.3 | C4—C5—H5A | 108.3 |
C7—C6—H6B | 109.3 | C6—C5—H5A | 108.3 |
C5—C6—H6B | 109.3 | C4—C5—H5B | 108.3 |
H6A—C6—H6B | 108.0 | C6—C5—H5B | 108.3 |
N4ii—Ni1—N4iii | 180.0 | H5A—C5—H5B | 107.4 |
N4ii—Ni1—N1iv | 90.26 (8) | N2—C4—C5 | 111.6 (2) |
N4iii—Ni1—N1iv | 89.74 (8) | N2—C4—H4A | 109.3 |
N4ii—Ni1—N1 | 89.74 (8) | C5—C4—H4A | 109.3 |
N4iii—Ni1—N1 | 90.26 (8) | N2—C4—H4B | 109.3 |
N1iv—Ni1—N1 | 180.000 (1) | C5—C4—H4B | 109.3 |
N4ii—Ni1—Cl1 | 90.19 (6) | H4A—C4—H4B | 108.0 |
N4iii—Ni1—Cl1 | 89.81 (6) |
Symmetry codes: (i) −x+3/2, y−1/2, −z+1/2; (ii) x+3/2, −y+1/2, z+1/2; (iii) −x+3/2, y+1/2, −z+1/2; (iv) −x+3, −y+1, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [NiCl2(C10H14N4)2] |
Mr | 510.11 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 7.4572 (15), 18.297 (4), 8.7321 (17) |
β (°) | 113.60 (3) |
V (Å3) | 1091.8 (4) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 1.16 |
Crystal size (mm) | 0.20 × 0.15 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2004) |
Tmin, Tmax | 0.801, 0.893 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10382, 2469, 2158 |
Rint | 0.037 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.037, 0.089, 1.11 |
No. of reflections | 2469 |
No. of parameters | 142 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.33, −0.37 |
Computer programs: SMART (Bruker, 2004), SAINT (Bruker, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), DIAMOND (Brandenburg, 2000).
Ni1—N4i | 2.0980 (19) | Ni1—Cl1 | 2.5270 (8) |
Ni1—N1 | 2.111 (2) |
Symmetry code: (i) −x+3/2, y+1/2, −z+1/2. |
Acknowledgements
This work was supported by the Natural Science Young Scholars Foundation of North University of China and the Scientific Research Start-up Foundation of North University of China.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
A large number of novel topologies constructed from bis(pyridine)alkane, triazolealkane or bis(imidazole)alkane ligands have been reported in recent years, for example, [Co(bte)2(NCS)2]n, {[Cd(bte)2(H2O)2](NO3)2}n, or [Cd(bimb)2(NCO)2]n [bte=1,2-Bis (1,2,4-triazol-1-yl) ethane, bimb=1,4-bis (imidazol-1-yl) butane] (Ballester et al., 1998; Li et al., 2004; Zhu et al., 2006; Zhu et al., 2009). These ligands show flexible bridging modes and can adopt different conformations (Li et al., 2004). Herein, a new coordination polymer based on 1,4-bis(imidazol-1-yl)-butane, [Ni(bimb)2Cl2]n, is reported.
The asymmetric unit of the title compound consists of one Ni2+ ion which is located on an inversion center, one bimb ligand and one chloride ion. The Ni2+ ion exhibits a distorted octahedral coordination environment defined by four N atoms from four bimp ligands in the equatorial plane [Ni1—N4 = 2.0980 (19) Å; Ni1—N1 = 2.111 (2) Å] and two chloride ions in axial positions [Ni1—Cl1 = 2.5270 (8) Å]. The dihedral angle between the imidazole rings in the bimp ligand is 60.99 (16)°.
Each bimb ligand connects two adjacent Ni2+ ions to form interpenetrating two-dimensional networks containing square Ni4(bimb)4 units parallel to (001) (Figure 2). The square Ni4(bimb)4 units are constructed from four Ni2+ ions which are situated in the four corners and four bimb ligands which are in the edge positions. The Ni ··· Ni distance in the net is 13.740 (3) Å.