Complexes of the dimethylgallium-1-pyrazolyl-o-aminophenolato ligand, [Me2Ga(pz)(o-NH2C6H4O)]−. Formation and crystal structure of the molybdenum amidine complex, Mo(CO)2Br(η3-C3H5)[η2-HN=CMe(pz)] (where pz = pyrazolyl, N2C3H3)

Abstract

The synthesis, characterization, and structures of complexes containing the o-aminophenolato ligand are detailed. A novel molybdenum amidine complex is also described. Crystals of (o-aminophenolato)dimethylgallium are monoclinic, a = 10.1970(9), b = 9.7597(7), c = 18.778(2) Å, β = 100.810(7)°, Z = 8, space group C2/c, those of bis(dimethylgallium-1-pyrazolyl-o-aminophenolato)nickel(II) benzene solvate are monoclinic, a = 20.491(1), b = 11.789(1), c = 15.789(1) Å, β = 103.413(7)°, Z = 4, space group C2/c, and those of η3-allyl(bromo)[2-(1-pyrazolyl)ethylidenarnino]dicarbonylmolybdenum(II) are monoclinic, a = 11.0278(4), b = 8.4461(2), c = 15.3747(5) Å, β = 109.208(3)°, Z = 4, space group P21/c. The structures were solved by conventional heavy atom methods and refined by full-matrix least-squares procedures to R = 0.030, 0.053, and 0.038 for 1980, 1684, and 1901 reflections, respectively. Reaction of the [Me2Ga(pz)(OC6H4NH2)]− ligand, L−, with [Re(CO)4Cl]2 results in the formation of LRe(CO)3 whose physical properties indicate a fac arrangement of the organogallate ligand.