Tin-capped trinuclear nickel clusters: Redox isomerism between μ3-stannyl and μ3-stannylene clusters of the class [Ni3(dppm)33-l)(μ3 -SnClx)]n+ (x = 2, n = 1; x = 3, n = 0)

Brian K. Breedlove, Philip E. Fanwick, Clifford P. Kubiak

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The reaction of Ni3(dppm)33-l)2 with sodium trichlorostannate affords the first tin-capped nickel cluster Ni3(dppm)33-l)(μ3 -SnCl3) (1). A site of coordinative unsaturation at tin can be introduced by the reaction of 1 with Tl[PF6] yielding the stannylene-capped cluster [Ni3(dppm)33-l)(μ3 -SnCl2)]+ (2). Clusters 1 and 2 were characterized by 31P NMR, X-ray diffraction, and cyclic voltammetry (CV). Clusters 1 and 2 exhibit single electron redox chemistries, [Ni3-(dppm)33-l)(μ3 -SnCl3)]0/.-, [Ni3(dppm)33-l)(μ3 -SnCl2)]+/0, that together comprise a redox equilibrium. Thus, electrochemical reduction of 1 produces first the 49e- cluster radical anion [Ni3-(dppm)33-l)(μ3 -SnCl3)].- which then yields the reduced form of 2, [Ni3(dppm)33-l)(μ3 -SnCl2)], upon chloride dissociation.

Original languageEnglish
Pages (from-to)4306-4308
Number of pages3
JournalInorganic chemistry
Volume41
Issue number17
DOIs
Publication statusPublished - 2002 Aug 26
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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