Bonding in Transition Metal Silyl Dimers. Molecular Orbital Theory

Abstract

Molecular orbital studies of Mn2(CO)8 (Si(C6H5)2)2 and Pt2(H3P) 4(SiC6H5C1)2 have been made by interacting disilene fragments with transition metal dimers. In the former complex, it is found that the Mn-Mn distance is close to the sum of the atomic radii because the Mn-Mn bond order is 1. This leads to a long Si-Si distance and allows strong Si-Mn bond formation. In the latter complex, the Pt-Pt bond order is 0, so the disilene, with Si-Si bond intact, binds to the Pt atoms by means of ordinary Pi donation and back-donation to Pi*. Based on these findings, the M-M and Si-Si distances in other known transition metal-silyl four-membered rings are discussed. Keywords: Manganese compounds, Silicon compounds, Disilenes, Organometallic compounds.

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Document Details

Document Type
Technical Report
Publication Date
May 05, 1989
Accession Number
ADA208269

Entities

People

  • Alfred B. Anderson
  • Claire A. Tessier-youngs
  • Eugene A. Zarate
  • Paul Shiller
  • Wiley J. Youngs

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Atoms
  • Chemical Synthesis
  • Chemistry
  • Classification
  • Electrons
  • Elements
  • Inorganic Chemistry
  • Manganese Compounds
  • Metals
  • Military Research
  • Molecular Orbital Theory
  • Notation
  • Organometallic Compounds
  • Security
  • Splitting
  • Three Dimensional
  • Transition Metals

Fields of Study

  • Chemistry

Readers

  • Organic Chemistry
  • Quantum Chemistry

Technology Areas

  • Space
  • Space - Hall-Effect Thruster