SYNTHESIS, ISOLATION, AND CHARACTERIZATION OF DIMERIC COMPOUNDS CONTAINING 2 DIFFERENT EXOCYCLIC LIGANDS ON THE GROUP-13 CENTER - X-RAY CRYSTAL-STRUCTURES OF [R(ME3SICH2)INE(SIME3)2]2 (R = PH, E = AS R = ME, E= AS, P R = CL, E = P)

The dimers [Ph(Me3SiCH2)InAs(SiMe3)2]2 (1), [Me(Me3SiCH2)InAs(SiMe3)2] 2 (2), [Me(Me3SiCH2)InP(SiMe3)2]2 (3), and [Cl(Me3SiCH2)InP(SiMe3)2]2 (4) are reported. These compounds are produced via ligand exchange rea ctions involving the migration of either alkyl groups, for 1-3, or a c hlorine atom, in the case of 4, from various Group 13 species. Additio nally, 3 and 4 can be prepared utilizing alternate routes involving a novel Si-C bond cleavage and reaction of (Me3SiCH2)InCl2 with P(SiMe3) 3, respectively. Compound 1 crystallizes in a trans configuration in t he triclinic space group Pl with unit cell parameters a 11.859(2), b 1 2.222(2), c 10.021(2) angstrom, alpha 107.59(1), beta 110.47(1), gamma 66.54(1)-degrees, V 1225.6(7) angstrom3 and Z = 1. Crystals of isostr uctural compounds 2-4 are isomorphous. These compounds also crystalliz e in a trans configuration in the monoclinic space group P2(1)/c with unit cell parameters: a 9.928(1), b 19.882(1), c 11.513(1) angstrom, b eta 111.21(1)-degrees, V 2118.6(6) angstrom3 and Z = 2 for 2; a 9.858( 1), b 19.662(1), c 11.456(1) angstrom, 110.88(1)-degrees, V 2074.7(6) angstrom3 and Z = 2 for 3; a 9.845(1), b 19.349(1), c 11.442(1) angstr om, beta 110.63(1)-degrees, V 2039.8(6) angstrom3 and Z = 2 for 4.