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The organogallium compound [{Me 2 NCH 2 Ga(Cl,I) 2 } 2 ] (1) and the organoindium compounds [Me 2 NCH 2 In(Cl,Br) 2 ] 2  (2) and [Me 2 NCH 2 InCl 2 ] 2  (3) have been prepared by the reactions of the low valent metal halides “GaI”, InBr and InCl with the iminium salt [Me 2 N=CH 2 ]Cl. Compounds 1 and 2 are heterohalogen mixtures. These compounds were characterised by NMR spectroscopy and mass spectrometry, 1 furthermore by single crystal X-ray diffraction and 3 by elemental analysis. During the work-up procedure, minor amounts of hydrogen halide adducts of compounds 2 and 3 were isolated as single crystals, which contain a further equivalent of THF. These zwitter-ionic species Me 2 N(H)CH 2 In(Br,Cl) 3 ·THF (2·H(Cl,Br)·THF) and Me 2 N(H)CH 2 InCl 3 · THF (3 ·HCl ·THF) were identified by single crystal X-ray diffraction. Methylation reactions of compounds 1 and 2 with MeLi gave two well-established compounds [{Me 2 NCH 2 GaMe 2 } 2 ] and [{Me 2 NCH 2 InMe 2 } 2 ], which were obtained previously by different preparation procedures.

Preparation of Geminal Donor-Acceptor Units by Reactions of Low Valent Metal Halides with Iminium Chlorides