Formation of a σ-cyclobutyl-platinum bond by the intramolecular activation of a cyclobutylphosphine. Synthesis and structure of

Barbara L. Simms*, James A. Ibers

*Corresponding author for this work

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

When the hydrobromide adduct of di-t-butylcyclobutylmethylphosphine, P(t-Bu)2(CH2CHCH2CH2CH2) · Hbr is combined with K[PtCl3(C2H4)] and LiBr in ethanol and heated at reflux for 5 h, the σ-cyclobutyl complex {A figure is presented} forms. The complex also forms from {A figure is presented} in boiling ethanol. The structure of {A figure is presented} was deduced from spectroscopic and analytical data and confirmed by X-ray analysis of a single crystal. The complex crystallizes in the tetragonal system in space group C12-I41cd (a = b = 19.658(7) Å, c - 15.805(6) Å, A = 113 K) with 8 molecules per unit cell. The final agreement index for R(F2) is 0.075 for the 2403 unique data (including F02 < 0). Bond lengths in the five-membered chelate ring PtPC(3)C(10)C(11) are PtP 2.198(4), PC(3) 1.875(18). C(3)C(10) 1.53(2), C(10)C(11) 1.57(2), C(11)Pt 2.079(17) Å. The remaining cyclobutyl bond distances are C(11)C(12) 1.56(2), C(12)C(13) 1.51(3), C(10)C(13) 1.53(3) Å. The PtBr bond distances are 2.510(2) and 2.612(2) Å for bromine cis- and trans- to atom C(11), respectively.

Original languageEnglish (US)
Pages (from-to)279-289
Number of pages11
JournalJournal of Organometallic Chemistry
Volume330
Issue number1-2
DOIs
StatePublished - Aug 18 1987

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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