Synthesis and structures of gallium amido imido phenyl clusters (PhGa)4(NHiBu)4(NiBu)2 and (PhGa)7(NHME)4(NMe)5

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Abstract

The phenylgallium-containing clusters constructed with bridging imido and amido ligands, (PhGa)4(NHiBu)4(NiBu)2 (1) (51% yield) and (PhGa)7(NHMe)4(NMe)5 (2) (31% yield), were synthesized from the room-temperature reactions of bis(dimethylamido)phenylgallium, [PhGa(NMe2)2]2, with isobutylamine and methylamine, respectively. The reaction of [PhGa(NMe2)2]2 in refluxing isobutylamine (85°C) afforded (Ph2GaNHiBu)2 as one of the products, while the reaction of [PhGa(NMe2)2]2 with methylamine at 150°C afforded compound 2 in only 9% yield. Compound 1 possessed an admantane-like Ga4N6 core, whereas compound 2 had a novel Ga7N9 core constructed with both chair- and boat-shaped Ga3N3 rings. The presence of several isomers of compounds 1 and 2 in solution is discussed along the structural similarities with other known gallium-nitrogen clusters and with gallium nitride.

Original languageEnglish (US)
Pages (from-to)6249-6257
Number of pages9
JournalInorganic Chemistry
Volume41
Issue number24
DOIs
StatePublished - Dec 2 2002

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