The Stabilisation of Monomeric Parent Compounds of Phosphanyl‐ and Arsanylboranes
- 16 January 2003
- journal article
- research article
- Published by Wiley in Chemistry – A European Journal
- Vol. 9 (2) , 515-519
- https://doi.org/10.1002/chem.200390054
Abstract
The structures of the parent compounds of phosphanyl- and arsanylboranes, H2BPH2 and H2BAsH2, were calculated by DFT-B3LYP methods. Such compounds have not previously been obtained preparatively. By applying the concept of Lewis acid/base stabilisation, [(CO)5W(H2EBH2⋅NMe3)] (E=P (3), As (4)) derivatives have been synthesised by the metathesis reactions between Li[(CO)5WEH2] and ClH2BNMe3 (E=P, As). Comprehensive thermodynamic studies on these systems verify the high stability of the Lewis acid/base stabilised complexes. Unexpected based on the thermodynamic calculations, UV radiation of the phosphanylborane 3 leads to the dinuclear phosphanido-bridged complex [(CO)8W2(μ-PHBH2⋅NMe3)2] (5) by H2 and CO elimination.Keywords
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