Structure of Bis(cyclopropyl)bis(dimethylphenylphosphine)platinum(II), [formula omitted]. Relationship between Structural and 1J(195Pt-31P) Data and Position of Cyclopropyl Group in Trans-Influence Series

Nancy L. Jones, James A. Ibers*

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

The structure of cis-bis(cyclopropyl)bis(dimethylphenylphosphine)platinum(II), [formula omitted], has been determined crystallographically at −133 (2) °C and consists of discrete molecules of the neutral complex. The complex crystallizes from pentane in the triclinic space group Ci1-P1̄ with two formula units in a unit cell of dimensions a = 11.055 (3) Å, b = 11.457 (3) Å, c = 9.897 (2) Å, α = 112.46 (1)°, β = 96.43 (1)°, γ.67.73 (1)°. The structure was solved from Patterson and electron density maps. Full-matrix least-squares refinement has led to a final value of the R index on F2 of 0.068 based on 8749 reflections and 226 variables. The conventional R index on F for those 7210 reflections having Fo2 > 3 σ(Fo2) is 0.039. This complex of Pt(II) possesses nearly square-planar geometry, P(1)-Pt-P(2) = 94.86 (4)°, C(1)-Pt-C(4) = 89.91 (18)°. The cyclopropyl rings are equilateral with average C-C distances of 1.506 (13) Å and C-C-C angles of 60.00 (80)°. Some important molecular parameters are Pt-C(1) = 2.086 (4) Å, Pt-C(4) = 2.070 (4) Å, Pt-P(1) = 2.302 (1) Å, and Pt-P (2) = 2.291 (1) Å. Examination of the structural and 31P{1H} NMR data and comparison of these data with those of other Pt(II) complexes suggest placement of the cyclopropyl group in the trans-influence series between metallocycloalkanes and alkyl groups, such as methyl and neopentyl.

Original languageEnglish (US)
Pages (from-to)326-330
Number of pages5
JournalOrganometallics
Volume1
Issue number2
DOIs
StatePublished - Jan 1 1982

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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