文摘
Two monomeric gallium-nitrogen compounds, Et2GaNH[C6H2(2,4,6-t-Bu)3] and EtGa{NH[C6H2(2,4,6-t-Bu)3]}2, have been prepared by metathetical reactions between either Et2GaClor EtGaCl2, as appropriate, and LiNH[C6H2(2,4,6-t-Bu)3] and have been characterized fully.Cryoscopic molecular weight studies demonstrated both compounds to be monomeric inbenzene solution, whereas an X-ray structural study of the latter identified a monomer.The compound Et2GaNH[C6H2(2,4,6-t-Bu)3] decomposes at room temperature to form a newmetallacyclic derivative m9901361a10002">{Etm990136100000">GaNH[C6H2(4,6-t-Bu)2(CMe2CH2-2)]}2, GaEt3, and H2N[C6H2(2,4,6-t-Bu)3]. A 1H NMR spectral study and an X-ray structural study were used to elucidateits structure. The compound EtGa{NH[C6H2(2,4,6-t-Bu)3]}2 does not decompose to themetallacycle, but it reacts readily with GaEt3 to form Et2GaNH[C6H2(2,4,6-t-Bu)3].