Journal of Organometallic Chemistry p. 69 - 82 (1987)
Update date:2022-07-29
Topics:
Beachley, O. T.
Kopasz, John P.
Zhang, Hongming
Hunter, William E.
Atwood, Jerry L.
The new amphoteric ligands (Me3SiCH2)2GaPPh2, (Me3SiCH2)2InPPh2, and (Me3CCH2)2InPPh2 have been prepared and characterized by elemental analyses, cryoscopic molecular weight measurements and 1H NMR, 31P NMR and IR spectroscopic data.An X-ray structural study was carried out to define the nature of <(Me3SiCH2)2InPPh2>2 in the solid state.The compounds were prepared either by a thermolysis reaction between the group 13 metal trialkyl and PPh2H or by a metathetical reaction between the dialkylmetal halide and KPPh2.Cryoscopic molecular weight measurements and 31P NMR spectroscopic data demonstrate that the new compounds exist as monomer-dimer equilibrium mixtures in benzene solution.The colorless crystal of <(Me3SiCH2)2InPPh2>2 contains two discrete molecules of the dimer in each unit cell.The compound crystallizes in the triclinic space group P1<*>, with unit cell dimensions of a 10.323(4), b 11.113(5), c 21.509(8) Angstroem, α 83.85(5), β 86.66(6), γ 83.27(5) deg and ρcalcd 1.29 g cm-3.Full matrix least-squares refinement led to a final R value of 0.035 for 3787 observed reflections.The molecule contains four-membered indium-phosphorus rings.
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