Gas-Phase Molecular Structure of Tetramethyldistibine, (CH3)2Sb-Sb(CH3)2

Attila G. Csaszar, Lise Hedberg, Kenneth Hedbera, Edward G. Ludwig, Arthur J. Ashe

Research output: Article

14 Citations (Scopus)


The structure of tetramethyldistibine has been investigated in the gas at 74 °C by electron diffraction. Although gauche and anti forms of the molecule probably exist, it was not possible to determine the rotomeric composition because of the small relative scattering from the torsion-sensitive distances. The results for the more important distances bond angles and amplitudes of vibration with estimated are r(Sb-Sb) = 281.8 (4) pm, r(Sb-C) = 216.6 (4) pm, r(C-H) = 109.8 (10) pm, z(SbSbC) = 95.5 (7)°, = 102.7 (65)°, = 114.3 (23)°, = 6.9 (4) pm, = 5.4 (5) pm, and = 5.9 (11) pm. The Sb-Sb bond length is definitely shorter than it is in the crystal. The longer bonds in the crystal probably result from electron delocalization along chains of Sb atoms which results in a decrease of the bond order of the Sb-Sb bonds.

Original languageEnglish
Pages (from-to)2257-2259
Number of pages3
Issue number11
Publication statusPublished - jan. 1 1986

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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