On the energetics of P–P bond dissociation of sterically strained tetraamino-diphosphanes.
Dalton Trans 2016;
45:1987-97. [DOI:
10.1039/c5dt02854j]
[Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thermochemical data for the homolytic P–P bond fission in tetraaminodiphosphanes (R2N)2P–P(NR2)2 were determined experimentally and computationally. The results confirm that radical formation is favoured by entropic and structural relaxation effects, and disfavoured by dispersion forces. Unlike aminophosphenium cations, the radicals display no strong preference for a planar (R2N)2P unit.
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