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- The reaction of NbCl4 with various diphosphine ligands in a 1:2 molar ratio results in the formation of eight-coordinate complexes like [NbCl4(diphosphine)2] and [NbBr4(diphosphine)2], with differing geometries observed in their crystal structures.
- These complexes exhibit a dodecahedral geometry for those with o-C6H4(PMe2)2, while those with dimethylene-backbone diphosphines display distorted square antiprismatic structures.
- Furthermore, the study reveals the formation of less stable 1:1 NbCl4-diphosphine complexes, which exist as halide-bridged dimers in
Article Abstract
The reactions of NbCl4 with diphosphine ligands o-C6H4(PMe2)2, Me2PCH2CH2PMe2 or Et2PCH2CH2PEt2 in a 1 : 2 molar ratio in MeCN solution produced eight-coordinate [NbCl4(diphosphine)2]. [NbBr4(diphosphine)2] (diphosphine = o-C6H4(PMe2)2 or Me2PCH2CH2PMe2) were made similarly from NbBr4. X-ray crystal structures show that [NbCl4{o-C6H4(PMe2)2}2] has a dodecahedral geometry, but the complexes with dimethylene-backboned diphosphines are distorted square antiprisms. The Nb-P distances and
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http://dx.doi.org/10.1039/c6dt01099g DOI Listing Publication Analysis
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