ORGANOMETALLIC COMPOUNDS WITH BRIDGED OR (DIMETHYLAMINOETHYL)-SUBSTITUTED CYCLOPENTADIENYL LIGANDS

We report here the synthesis and structure of organometallic compounds with bridged or dimethylaminoethyl-substituted cyclopentadienyl ligan ds. A short survey of p- and d-block complexes with pentafulvalenediyl or silicon-linked cyclopentadienyl systems is followed by a discussio n of cyclopentadienyl compounds containing the bi(poly)dentate ligands C(5)R(4)CH(2)CH(2)NMe(2) (R = H, Me) and s- or p-block elements. Comp ounds of the type (C(5)R(4)CH(2)CH(2)NMe(2))M (M = Li, K, Tl), (C(5)R( 4)CH(2)CH(2)NMe(2))(2)Ca, (C(5)R(4)CH(2)CH(2)NMe(2))ElMe(3) (El = Si, Sn), and (C(5)R(4)CH(2)CH(2)NMe(2))MX(2) (M = Al, Ga, In; X = H, Me, E t, Cl, Br, I) have been obtained. Those with group 2 and group 13 elem ents as central atoms show an intramolecular coordination of the nitro gen atom and monomeric structures; sufficient volatilities make them p otential candidates for MOCVD-processes.