DERIVATIVE DES BOROLS II. PENTAPHENYLBOROL: SYNTHESE, REDUKTION ZUM DIANION UND KOMPLEXE VON KOBALT UND PLATIN

Article abstract of DOI:10.1016/S0022-328X(00)93308-4

Analytically pure, dark blue pentaphenylborole (PPB) can be synthesized from 1,1-dibutyl-2,3,4,5-tetraphenylstannole and C6H5BCl2 in toluene in 95percent yield.Reduction of PPB with elemental potassium in THF produces brownish red K2 which is derived from the new 6?-electron anion ^2-.The new complexes (C5H5)Co(PPB) and (COD)Pt(PPB) (COD=1,5-cyclooctadiene) are obtained by irradiation of a toluene solution of (C5H5)Co(CO)2 and PPB and by ligand substitution reaction from Pt(COD)2 and PPB respectively.