Abstract
The three-components reaction of dimethyltin dibromide with imidazo[1,2-a]pyridine and allyl bromide in ethanol affords an ionic complex, bis(1-allylimidazo[1,2-a]pyridinium) dimethyltetrabromostannate(II). X-ray crystal structure analysis of the complex reveals the tin atom to be hexacoordinated, forming a dianion. Organotin(IV) halides on reacting with imidazo[1,2-a]pyridines yield 1:2 complexes. The X-ray crystal structure analysis of such a complex shows the tin atom to be hexacoordinated, with two imidazo[1,2-a]pyridine molecules coordinated through the N1 atom. Bis(imidazo[1,2-a]pyridine)dimethyltin dibromide does not show any reactivity towards allyl bromide or 1-(1-pyrrodinyl)cyclohexene, even on refluxing in ethanol.
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