Abstract
The interaction of N,N'-dimethylacetamidine with trialkyl derivatives of aluminium, gallium and indium yields dialkylmetal compounds of the structural formula R2M(N2Me2CMe) (M = Al, Ga and In). According to the vibrational data the M2N4C2 skeletons of these dimeric products form a centrosymmetric puckered eight-membered ring, probably with C2h symmetry. The IR-and Raman spectra of the amidine HN(Me)C(= NMe)Me are discussed.

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