Synthesis and reactivity of cyclo-tetra(stibinophosphonium) tetracations: redox and coordination chemistry of phosphine-antimony complexes.

ABSTRACT: Reductive elimination of [R₃PPR₃]²⁺, [11(R)]²⁺, from the highly electrophilic Sb^III centres in [(R₃P)₃Sb]³⁺, [8(R)]³⁺, gives Sb^I containing cations [(R₃P)Sb]¹⁺, [9(R)]¹⁺, which assemble into frameworks identified as cyclo-tetra(stibinophosphonium) tetracations, [(R₃P)₄Sb₄]⁴⁺, [10(R)]⁴⁺. A phosphine catalyzed mechanism is proposed for conversion of fluoroantimony complexes [(R₃P)₂SbF]²⁺, [7(R)]²⁺, to [10(R)]⁴⁺, and the characterization of key intermediates is presented. The results constitute e

SUBMITTER: Chitnis SS 

PROVIDER: S-EPMC5647858 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature