Reaction of LiE(SiMe3)2 with Compounds Containing Four-Membered Cores of the General Formula MEM(Cl) (M = In, E = As, P; M = Ga, E = As): Novel Rearrangement Reactions to Form the Adducts R3M.As(SiMe3)3 (R = Me3SiCH2, M = In; R = Ph, M = Ga)

The 1:1 reactions of R2ME(SIMe3)2M(R)2CI with LIE(SIMe3)2(R = Me3SiCH2, = In, E = P; R = Me3SiCH2, = In, E = As; R = Me3SICH2, M = Ga, E = As; R = Ph, M = Ga, E = As) result in the formation of species containing MEME core structures as verified by comparison of 13C and 1H NMR spectra, and melting points, to those obtained for authentic samples prepared previously. When reactions were carried out involving R2ME(SiMe3)2M(R)2CI and LiE′(SIMe3)2 (R = Me3SiCH2, M = In, E = P, E′ = As; R = Ph, M = Ga, E = As, E′ = P), novel rearrangements resulted to form R3M.As(SiMe3)3 [R = Me3SiCH2, M = In (1) or R = Ph, = Ga (2)]. Both 1 and 2 are formed via the homoleptic redistribution of the substituents on both the metal center and the pnictide. Compound 1 belongs to the rhombohedral system, space group R 3 with cell constants a = 16.185 (5) Å, c = 12.265 (4) Å, V = 2782 (2) Å3, and Z = 3. Compound 2 crystallizes in the monoclinic system, space group P21/c with cell constants a = 18.867 (5) Å, b = 19.307 (2) Å, c = 20.926 (6) Å, β = 123.27 (1)°, V = 6373 (5) Å3 5, and Z = 8. © 1992, American Chemical Society. All rights reserved.

Duke Scholars

Author Andrew T. McPhail Chemistry