Ma. Beswick et al., SYNTHESIS AND STRUCTURE OF [((BUP)-P-T)(2)H)K-CENTER-DOT-PMDETA](2), CONTAINING AN ORGANO DIPHOSPHIDO LIGAND [PMDETA = (ME2NCH2CH2)(2)NME], Chemical communications, (15), 1998, pp. 1527-1528
Reduction of [(BuP)-P-t](4\) with K metal (1:5 equiv,) followed by the
addition of pmdeta and stoichiometric hydrolysis gives [(((BuP)-P-t)(
2)H}K . pmdeta](2), a unique complex containing a [(BuP)-P-t(H)PBut](-
) anion ligand homologous with a phosphido anion (R2P-).