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A two-and-a-half-layer sandwich: potassium salt of anionic (η(4)-tetrasilacyclobutadiene)(η(5)-cyclopentadienyl)ruthenium.

Authors
  • Lee, Vladimir Ya
  • Takanashi, Kazunori
  • Sekiguchi, Akira
Type
Published Article
Journal
Dalton Transactions
Publisher
The Royal Society of Chemistry
Publication Date
Oct 21, 2010
Volume
39
Issue
39
Pages
9229–9231
Identifiers
DOI: 10.1039/c0dt00009d
PMID: 20407682
Source
Medline
License
Unknown

Abstract

An anionic ruthenium sandwich complex featuring the tetrasilacyclobutadiene ligand, [η(4)-tetrakis(di-tert-butylmethylsilyl)tetrasilacyclobutadiene](η(5)-pentamethylcyclopentadienyl)ruthenium was synthesized and isolated as its potassium salt [(η(4)-R(4)Si(4))RuCp*](-)·[K(+)(thf)(2)] (R = SiMet-Bu(2), Cp* = η(5)-Me(5)C(5)), 1(-)·[K(+)(thf)(2)], by the reaction of the tetrasilacyclobutadiene dianion dipotassium salt [R(4)Si(4)](2-)·[K(+)(thf)(2)](2) with 0.25 equiv. of [Cp*RuCl](4) in THF. In its crystalline form, 1(-)·[K(+)(thf)(2)] features a nearly square-planar tetrasilacyclobutadiene ligand.

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