Reactivity of \dqGaI\dq Toward N-Substituted 1,4-Diazabuta-1,3-dienes: Synthesis and Characterization of Gallium Heterocycles Containing Paramagnetic Diazabutadiene Monoanions. Organometallics, (21)15:3169--3172, 2002. [PUMA: B3LYP ESR calcn diazabutadiene diazabutadiene;heterocycle formation gallium heterocycle;crystal heterocycle;gallium in iodide mol monoanion paramagnetic prepn reaction situ spectra structure]