Issue 38, 2012

Bismuth–ferrocene carboxylates: synthesis and structure

Abstract

The reaction of ferrocenedicarboxylic acid with triphenylbismuth in a 1 : 1 ratio under solvothermal conditions afforded the 1D coordination polymer [Bi222-OOCFcCOO-μ22)(η2-OOCFcCOO-η2)(μ22-OOCFcCOO-η2)]n (1). In this polymer two types of bismuth centers (hepta- and octacoordinate) are present and are interconnected by the bridging coordination of ferrocene dicarboxylate ligands. The reaction of ferrocenecarboxylic acid with triphenylbismuth in a 1 : 3 ratio, in toluene, under refluxing conditions, afforded the 1D coordination polymer [Bi(μ22-FcCOO)(η2-FcCOO)2]n (2). In the solid state, 2 exists as a helical polymer, where the inner bismuth chain is enclosed by an external sheath of ferrocene carboxylate ligands. In solution, however, 2 decomposes into the monomeric repeat unit [Bi(FcCOO)3] which is indicated by ESI-MS as well as cyclic voltammetric studies. Thus, a single, quasi-reversible redox event is seen for 2 in solution. The reaction of triphenylbismuth with ferrocenecarboxylic acid in a 1 : 1 stoichiometry afforded the molecular dimer [Bi222-FcCOO)22-FcCOO)4(H2O)4]·(2FcCOOH) (3). Compounds 1–3 reveal rich supramolecular architectures in the solid state as a result of the presence of C–H⋯O, C–H⋯π and π⋯π interactions.

Graphical abstract: Bismuth–ferrocene carboxylates: synthesis and structure

Supplementary files

Article information

Article type
Paper
Submitted
29 May 2012
Accepted
16 Jul 2012
First published
16 Jul 2012

Dalton Trans., 2012,41, 11684-11691

Bismuth–ferrocene carboxylates: synthesis and structure

V. Chandrasekhar and R. K. Metre, Dalton Trans., 2012, 41, 11684 DOI: 10.1039/C2DT31153D

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