Synthesis, structure and reactivity of new low-valent mono(η-arene)niobium compounds
Abstract
The new compounds [Nb(η-C6H5Me)(PMe3)3R](R = H or SiMe3), [Nb(η-C6H5Me)(tmps)], [Nb(η-C6H5Me)(tmps)H][tmps = MeSi(CH2PMe2)3], [Nb(η-C6H5Me)(η-C5H5)(PMe3)], [Nb(η-C6H5Me)(η-C9H7)(PMe3)], [Nb(η5-C9H7)(CO)3(PMe3)], [Nb(η-C6H5Me)(η5-C7H9)(PMe3)], [Nb(η-C7H7)(η4-C7H8)(PMe3)], [Nb(CO)3(PMe3)4][Nb(CO)5(PMe3)], [Nb(η-C7H7)(CO)2(PMe3)], [Nb(η-C6H5Me)2X](X = Br, I, Me, Ph or CH2Ph), [{Nb(η-C6H5Me)(µ-SR)2}2](R = CH2Ph, Me or Bu) and [{Mo(η-C6H5Me)(µ-SePh)2}2][PF6]2 have been prepared (indicates the crystal structure has been determined). Evidence for the anions [Nb(η-C6H5Me)(PMe3)3]– and [Nb(η-C6H5Me)(tmps)]– is presented.