Precursor chemistry of Group 13 nitrides XV: synthesis and structure of adduct stabilized bis- and trisazides of indium; thermoanalytic characterisation of py(3)In(N-3)(3)

The synthesis and properties of {(X)(2)In[(CH2)(3)NMe2)]}(2) (1: X = Br, 2: X = N-3) and (terpy)In(N-3)(2)Y (3: Y = N-3; 4. Y = eta(2)-O2C(CH2)(2)CH2O H) are reported. Compounds 1 and 4 have been characterized by single crysta l X-ray diffraction studies. Compound 2 represents the first adduct stabili zed and volatile covalent bis azide compound of indium. The pyrolysis of th e trisazide py(3)In(N-3)(3) (5) was studied by TGA and DSC showing three di stinct steps between 100 and 250 degrees C according to loss of pyridine. D ue to the low thermal stability of InN the controlled detonation of pure 5 and mixtures of 5 with (Et3N)Ga(N-3)(3) yields In metal rather than InN or an In1-xGaxN alloy. (C) 1999 Elsevier Science S.A. All rights reserved.