Synthesis and structural aspects of gallium compounds containing tridentate pincer type pyrrolyl ligands: Intramolecular hydrogen bonding of gallium aryloxides

A bis(imino)carbazolate pincer ligand stabilized mononuclear gallium(I) compound: synthesis, characterization, and reactivity

The first bis(imino)carbazolate pincer ligand supported mononuclear Ga(I) compound LGa: (3) was synthesized and fully characterized. Oxidation of 3 with elemental selenium afforded the dinuclear Ga(III) compound [LGa(μ-Se)]₂ (4) bearing two bridging Se atoms. Ligand substitution of Cr(CO)₆ with 3 under UV light irradiation afforded the gallylene-chromium complex LGa: → Cr(CO)₅ (5). In addition, the attempted synthesis of the aluminium analogue LAl: through reduction of LAlI₂ (7) only led to isolation of the dinuclear Al(III) compound (LAlI)₂ (8), most probably formed through the C-C coupling of two imino radicals.

Synthesis and characterization of group 13 dichloride (M = Ga, In), dimethyl (M = Al) and cationic methyl aluminum complexes supported by monoanionic NNN-pincer ligands

A series of monoanionic NNN-pincer ligands effectively stabilize five-coordinate gallium and indium dichloride complexes, as well as neutral dimethyl aluminum species, and organometallic cations thereof.

2,5-Bis[(dimethylamino)methyl]-1H-pyrrole

The asymmetric unit contains two independent molecules, C10H19N3, which are linked into dimers by two Npyrrole—H...Namine hydrogen bonds.