Issue 37, 2008

More user-friendly phosphines? Molecular structure of methylphosphine and its adduct with borane, studied by gas-phase electron diffraction and quantum chemical calculations

Abstract

The molecular structures of methylphosphine (CH3PH2) and methylphosphineborane (CH3PH2·BH3) have been determined from gas-phase electron diffraction data and rotational constants, employing the SARACEN method. The experimental geometric parameters generally showed a good agreement with those obtained using ab initio calculations and previous microwave spectroscopy studies. In order to assess the accuracy of the calculated structures a range of ab initio methods were used, including the CCSD(T) method, with correlation-consistent basis sets. The structural environment around the phosphorus atom was found to change significantly upon complexation with borane, with the P–C bond length shortening and the bond angles widening.

Graphical abstract: More user-friendly phosphines? Molecular structure of methylphosphine and its adduct with borane, studied by gas-phase electron diffraction and quantum chemical calculations

Supplementary files

Article information

Article type
Paper
Submitted
19 Mar 2008
Accepted
13 Jun 2008
First published
01 Aug 2008

Dalton Trans., 2008, 5041-5047

More user-friendly phosphines? Molecular structure of methylphosphine and its adduct with borane, studied by gas-phase electron diffraction and quantum chemical calculations

R. Noble-Eddy, S. L. Masters (née Hinchley), D. W. H. Rankin, D. A. Wann, B. Khater and J. Guillemin, Dalton Trans., 2008, 5041 DOI: 10.1039/B804780D

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