Research Article: catena-Poly[[bis­(nitrato-κ2O,O′)cobalt(II)]-μ-4,4′-bis­(pyrazol-1-ylmeth­yl)biphenyl-κ2N2:N2′]

Date Published: June 01, 2010

Publisher: International Union of Crystallography

Author(s): Jin-Sheng Gao, Xue Wang, Zhi-Yong Ding, Guang-Feng Hou.


In the title compound, [Co(NO3)2(C20H18N4)]n, the CoII atom lies on a crystallographic twofold axis and the coordination geometry can be considered as a slightly distorted tetra­hedron defined by two O atoms from two nitrate groups and two N atoms from two ligand mol­ecules. A distorted octa­hedron may be assumed when two of the symmetry-related nitrate O atoms with Co—O distances of 2.3449 (19) Å are added to the coordination environment. Another twofold axis, passing through the middle of the biphenyl bonds, is observed in the crystal structure. A chain is built up by the ligands linking the CoII ions along [101].

Partial Text

For a related polymeric bis­(pyrazole) dinitratocobalt(II) structure, see: Chen et al. (1997 ▶). For the isotypic Zn structure, see: Wang et al. (2010 ▶). For the synthesis and structure of a three-dimensional polymeric Zn(II) network compound, see: Zhu et al. (2002 ▶).




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