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Gallium-69 and -71 and indium-115 n.m.r. spectra have been obtained for the tetrahalometallate anions MX4- (M = Ga, In; X = Cl, Br, I) in dichloromethane solution. For each element, mixtures of two halo anions gave mixed halo species in the statistical distribution. For gallium, a mixture of the three halo anions gave all 15 possible species in the statistical distribution. The effect of the electric quadrupole moment is clearly reflected in the linewidths; gallium-71 gave sharper lines and better resolution of the mixed species than gallium-69 and the resonances for indium-1 15 were very broad.

Aus den NMR‐Spektren der Anionen MX; (M: Ga, In; X: Cl, Br, I) in CH2Cl2 ergibt sich, daß Mischungen von 2 Halogenidionen bei beiden Elementen zu gemischten Halogenospezies in statistischer Verteilung führen.