Synthesis and crystal structure of two novel nickel (imidazole) complexes having hydrogen-bonded networks |
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Authors: | Yun Gong Changwen Hu Hui Li Wanlong Pan Xueli Niu Zhifa Pu |
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Institution: | aThe Institute for Chemical Physics, Beijing Institute of Technology, Beijing 100081, People's Republic of China bDepartment of Chemistry, Beijing Institute of Technology, Beijing 100081, People's Republic of China |
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Abstract: | Two nickel (imidazole) complexes, Ni(im)6Cl2·4H2O (1) and Ni(im)6(NO3)2 (2) (im=imidazole) have been synthesized and characterized by elemental analysis, IR, UV, TG and single crystal X-ray diffraction. 1 crystallizes in the triclinic space group P-1 with a=8.800(6) Å, b=9.081(6) Å, c=10.565(7) Å, =75.058(9)°, β=83.143(8)°, γ=61.722(8)°, V=718.3(8) Å3, Z=1 and R1 (wR2)=0.0469 (0.1497). 2 crystallizes in the trigonal space group R-3 with a=12.370(6) Å, b=12.370(6) Å, c=14.782(14) Å, =90.00°, β=90.00°, γ=120.00°, V=1959(2) Å3, Z=3 and R1 (wR2)=0.0358 (0.0955). 1 and 2 exhibit different supramolecular network due to their different counter anions and different hydrogen bonding connection. In compound 1, Ni(im)6]2+ cation and counter anions Cl? alternatively array in an ABAB fashion via N–HCl hydrogen bonding. In compound 2, the plane of each NO32? is almost parallel and each NO32? connect three different Ni(im)6]2+ cations via N–HO hydrogen bonding. |
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Keywords: | Crystal structure Nickel (imidazole) complex Hydrogen bonding |
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