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Updated: Aug 30, 2026

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
Published on: February 7, 2017
Helical catena-poly[[tris(1H-benzimidazole-kappaN(3))cobalt(II)]-micro-maleato-kappa(3)O,O':O"]
Yu-Hong Xue1, Duan-Jun Xu, Jian-Ming Gu
1Department of Chemistry, Zhejiang University, Hangzhou 310027, People's Republic of China.
Abstract:
The crystal structure of the title compound, [Co(C(4)H(2)O(4))(C(7)H(6)N(2))(3)](n), consists of polymeric chains of the Co(II) complex. Two maleate dianions and three benzimidazole ligands coordinate to the Co(II) atom with a distorted octahedral geometry. The maleate dianions bridge neighbouring Co(II) atoms via both terminal carboxylic acid groups, one of which is monodentate and the other bidentate, to form a helical structure of alternating maleate dianions and Co(II) atoms, with a pitch height of 9.2667 (17) A. The absolute structure has been determined, and the crystal contains only right-handed helices. Intrahelical N-H...O hydrogen bonds stabilize the helical structure, while interhelical N-H...O hydrogen bonds link neighbouring helices to form the supramolecular structure.
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