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The reaction of N,N′-di( t butyl)-ethane- 1,2-diamine with NaH followed by anhydrous GaCl 3  (molar ratios 1:2 :1) gives mainly an insoluble bis(diamido)gallium chloride together with a low yield (28%) of a soluble monocyclic dichlorogallium-[2-( t butylamino)-ethyl-( t butyl)amide], Cl 2 Ga( t BuNH-CH 2 CH 2 -N t Bu) 1, the structure of which has been determined. Metallation of the same diamine with  t butyl-lithium and GaCl 3  (1:2:1) gave small quantities of the corresponding dinuclear, bicyclic gallium(II) compound 2, [( t BuNH-CH 2 CH 2 -N t Bu)GaCl] 2  with a Ga-Ga single bond connecting the two units, as again shown by a single crystal X-ray diffraction analysis.

Preparation and Structure of Cyclic Gallium(III) and Gallium(II) 2-Amino-ethyl-amides