Accession Number : ADA256505
Title : Synthesis of [(Me3CCH2)Ga(PPh2)2]2 from [(Me3CCH2)ClGaPPh2]3
Descriptive Note : Technical rept.
Corporate Author : STATE UNIV OF NEW YORK AT BUFFALO DEPT OF CHEMISTRY
Personal Author(s) : Beachley, Jr , O T ; Malony, John D ; Rogers, Robin D
Report Date : 14 Oct 1992
Pagination or Media Count : 22
Abstract : The gallium phosphide [(Me3CCH2)Ga(PPh2)2]2 has been prepared from [(Me3CCH2)ClGaPPh2]3 and Li(CMe3) in an Et2O/C6H6 mixture at 0 deg C and fully characterized by elemental analyses, physical properties, 1H NMR, 31p NMR and IR spectroscopic data and an X-ray structural study. The identity of the gallium phosphide was confirmed by its independent synthesis from [(Me3CCH2)BrGaPPh2]3 and KPPh2 in Et2O/C6H6. The dimeric molecule crystallizes in the monoclinic spacegroup Pi with cell dimensions of a = 10.106(2)A, b = 11.146(6)A, c = 12. 266(2)A, alpha, = 93.91(2), beta = 101.39(1), gamma = 95.81(4), V 1342.0A3, and Z = 1. Diffraction data were collected on an Enraf-Nonius CAD-4 diffractometer, and the structure was refined to R = 3.8% and wR = 3.8% for those 3561 unique data with Fo 5 sigma (Fo). Ga2p2 ring has a planar conformation. The neopentyl groups are arranged trans to each other across the ring. The bridging Ga-P distances are 2.4568(9) and 2.4689(9) angstrom. The terminal Ga-P bond distance is 2.351(1) angstrom.
Descriptors : *METHYL RADICALS , *CARBON , *GALLIUM PHOSPHIDES , SYNTHESIS , MOLECULES , PHYSICAL PROPERTIES , MIXTURES , GALLIUM , RINGS , ETHYL RADICALS , IDENTITIES , DIFFRACTOMETERS , TERMINALS , CHLORINE , DIMERS , PHOSPHORUS , PHOSPHIDES , DIFFRACTION , X RAYS , CELLS , STRUCTURES , ORGANOMETALLIC COMPOUNDS
Subject Categories : Inorganic Chemistry
Distribution Statement : APPROVED FOR PUBLIC RELEASE