Synthesis and Structural Characterization of Organoindium-Phosphorus Complexes Containing a Four-Membered In-P-In-Cl or In-P-In-P Ring: Crystal Structures of (Me3SiCH2)2InP(SiMe3)2In(CH2SiMe3)2Cl and [(Me3SiCH2)2InP(SiMe3)2]2

The first example of an (formula omitted)-ring-containing compound, (formula omitted) (1), was prepared by the reaction of (Me3SiCH2)2InCl and (Me3Si)3P in a 2:1 mole ratio. Similarly, the dimer containing an (formula omitted) core, [(Me3SiCH2)2InP(SiMe3)2]2 (2), was prepared by reaction in a 1:1 mole ratio. X-ray crystallographic analyses showed the (formula omitted) ring of 1 to be nonplanar while the (formula omitted)ring of 2 is planar. Compound 1 belongs to the triclinic system, space group (formula omitted) (Ci1), with two molecules in a unit cell of dimensions o = 12.581 (1) Å,b = 19.470 (2) Å, c = 9.643 (1) Å, a = 89.75 (1)°, β = 112.91 (1)°, and γ = 100.68 (1)°. Compound 2 crystallizes in the orthorhombic system, space group Pbcn (D2h14), with four molecules in a unit cell of dimensions a = 12.782 (2) Å,b = 21.482 (3) Å, and c = 18.651 (3) A. Compound 2 reacts with 2 equiv of (Me3SiCH2)2InCl to yield 1 as a major product, as evidenced by 1H and 13C{1H} NMR and melting point data. © 1992, American Chemical Society. All rights reserved.

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Author Andrew T. McPhail Chemistry