DERIVATIVE DES BOROLS. VI. DEHYDRIERENDE KOMPLEXIERUNG VON BOROLENEN MIT CARBONYLMETALLEN: (BOROL)METALL-KOMPLEXE VON MANGAN, EISEN UND COBALT

Article abstract of DOI:10.1016/S0022-328X(00)99531-7

The reaction of 2-borolenes and 3-borolenes C4H6BR (R=Ph, Me, C6H11, OMe) with Mn, Fe, and Co carbonyls leads to dehydrogenating complexation with formation of simple, i.e.C-unsubstituted (η⁵-borole)metal complexes.Thus, Mn2(CO)10 gives the triple-decked complexes (μ-η⁵-C4H4BR)2 (R=Ph, OMe).By irradiation of Fe(CO)5 the half-sandwich complexes Fe(CO)3(η⁵-C4H4BR) (R=Ph, Me, C6H11, OMe) are formed, whereas Co2(CO)8 yields the dinuclear complexes (μ-CO)25-C4H4BR)>2(Co-Co) (R=Ph, Me).A low-temperature X-ray structure determination of Fe(CO)3(η⁵-C4H4BPh) is described in detail.