Polymethylene spacer regulated structural divergence in cadmium complexes: Unusual trigonal prismatic and severely distorted octahedral coordination

Suparna Banerjee, Ashutosh Ghosh*, Biao Wu, Paul Gerhard Lassahn, Christoph Janiak

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

100 引用 (Scopus)

摘要

Chelation of the tetradentate pyridyl di-Schiff-base ligands, N,N′-bis-(1-pyridin-2-yl-ethylidene)-propane-1,3-diamine (L1) or N,N′-bis-(1-pyridin-2-yl-ethylidene)-ethane-1,2-diamine (L2) to a cadmium(II) centre reveals interesting structural deviations from regular octahedral geometry in the resulting hexacoordinated complexes [Cd(L 1)(NCS)2] (1) and [Cd(L2)(NCS)2] (2), respectively. The two tetradentate ligands L1 and L2 differ only in the polymethylene chain - (CH2)3 and (CH2)2, respectively, which connects the two halves of the symmetric ligands. Complex 1 assumes a trigonal prismatic (TP) geometry. The structure of 2 reveals a severely distorted octahedral geometry. The structural differences between [Cd(L1)(NCS)2] (1) and [Cd(L 2)(NCS)2] (2) can be traced to the length of the polymethylene spacers and the formation of a six- versus a five-membered metal-chelate ring together with the pyramidal Cd(L1) and planar Cd(L2) arrangement.

源语言英语
页(从-至)593-599
页数7
期刊Polyhedron
24
5
DOI
出版状态已出版 - 31 3月 2005
已对外发布

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Banerjee, S., Ghosh, A., Wu, B., Lassahn, P. G., & Janiak, C. (2005). Polymethylene spacer regulated structural divergence in cadmium complexes: Unusual trigonal prismatic and severely distorted octahedral coordination. Polyhedron, 24(5), 593-599. https://doi.org/10.1016/j.poly.2005.01.005