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) ų, 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) ų 5, and Z = 8. © 1992, American Chemical Society. All rights reserved.

Duke Scholars

Author Andrew T. McPhail Chemistry