Abstract
Trimethyl(silylmethylene)phosphorane (1) has been prepared in a reaction of H3SiCH2CH2Cl and (CH3)3PCH2 in a molar ratio 1:2. C2H4 is evolved in a β‐elimination process, followed by formation of [(CH3)4P]+Cl− in a transylidation step. — The molecular structure of (CH3)3PCHSiH3 in the gas phase has been determined by electron diffraction. Principal bond lengths (ra) are: PC = 180.7(8), P = C = 165.3(11), SiC = 185.2(20) pm. The angles between the PC(methyl) bonds are 103.4(13)° and the SiCP angle is 123.4(8)°, consistent with a planar configuration of the methylene carbon atom. The molecule adopts a conformation in which the SiC bond is twisted 25° from a position in which it eclipses one PC bond, but there is a large amplitude torsional vibration about the PC bond.
Original language | English |
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Pages (from-to) | 1637-1645 |
Number of pages | 9 |
Journal | Chemische Berichte |
Volume | 113 |
Issue number | 5 |
DOIs | |
State | Published - 1980 |
Externally published | Yes |