Crystal Structures and Magnetisms of Two Ni(im) Complexes Having Hydrogen-Bonded Networks

Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (11): 1671.

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Crystal Structures and Magnetisms of Two Ni(im) Complexes Having Hydrogen-Bonded Networks

NIU Shu-Yun¹, YANG Zhong-Zhi¹, YANG Qing-Chuan², HOU Yun-Yan³, YANG Guang-Di³, BU Wei-Min³

1. Department of Chemistry, Liaoning Normal University, Dalian 116029, China;
2. College of Chemistry and Molecular Engineering, Peking University, Beijing 10087, China;
3. Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China

Received:1999-01-08 Online:1999-11-24 Published:1999-11-24

Abstract

Abstract: The crystals of two complexes [Ni(im)₆](NO₃)(OH)(H₂O)₄(Ⅰ) and [Ni(im)₄(H₂O)₂][C₆H₄(COO)₂] (Ⅱ) were synthesized. The structures of single crystals were determined by X-ray diffraction. The crystal (Ⅰ) is of hexagonal system, space group P6₃/m with a=0.8985(10)nm, c=2.1002(4) nm, V=1.4685(4)nm³, Z=2, R=0.043, R_w=0.045.The crystal(Ⅱ) is monoclinic system, space group C2/c with a=2.2207(4) nm, b=0.7665(2) nm, c=1.6043(3) nm, β=120.60(3)°, V=2.3503(9) nm³, Z=4, R=0.056, R_w=0.079. The prominent feature of these two complexes is that they have various hydrogen bondings and thereby possess infinite three-dimensional networks. This not only increa-ses the crystal structure stability but also forms hydrogen bonded charged-transfer system, which modulates and promotes the electron transfer between the molecules. The temperature dependence of the magnetic susceptibility was measured and discussed.

Key words: Ni(im)complex, Hydrogen-bonded network, Crystal structure, Magnetism

CLC Number:

O614

TrendMD:

NIU Shu-Yun, YANG Zhong-Zhi, YANG Qing-Chuan, HOU Yun-Yan, YANG Guang-Di, BU Wei-Min . Crystal Structures and Magnetisms of Two Ni(im) Complexes Having Hydrogen-Bonded Networks[J]. Chem. J. Chinese Universities, 1999, 20(11): 1671.

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Crystal Structures and Magnetisms of Two Ni(im) Complexes Having Hydrogen-Bonded Networks

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