Synthesis and Characterization of a Series of Organoindium Phosphides, Including Molecular Structures of [(Me3CCH2)2InPEt2]2 and [(Me3CCH2)2InP(H)(C6H11)

Abstract

Abstract : A series of organoindium-phosphides including (Me3CCH2)2InPRR' (R = R' =Et, C6H11; R = C6H11, R' = H; R = Me, R' = Ph) and (Me3SiCH2)2InP(Me)Ph have been prepared and characterized. The characterization data include partial elemental analyses (C, H), 1H and 31P NMR and IR spectral studies, physical properties, cryoscopic molecular weight studies (with the exception of Me3CCH2)2InP(C6H11)2), and X-ray structural studies of ((Me3CCH2)2InPEt2)2 and ((Me3CCH2)2InP(H)(C6H11))3. The compound (Me3CCH2)2InPEt2 is observed to be a dimer in benzene solution; (Me3CCH2)2InP(H)(C6H11) exists as a dimer-trimer equilibrium mixture whereas (Me3CCH2)2InP(Me)(Ph) and (Me3SiCH2)2InP(Me)(Ph) are trimers. NMR studies are consistent with (Me3CCH2)2InP(C6H11)2 being a dimer in benzene solution but the concentration was too low to confirm the conclusion by cryoscopic molecular weight studies. jg