Aldehyde complexes of the zinc halides were obtained by treating ZnCl2, ZnB
r2, and ZnI2 under anhydrous conditions with large excesses of benzaldehyde
and various substituted benzaldehydes. Their constitutions were determined
by a total of 12 X-ray structure analyses. Three product types were found:
ZnHal(2)(aldehyde), (A), [ZnHal(2)(aldehyde)](infinity) (B), and [Zn(aldeh
yde)(6)] [Zn(2)Hal(6)] (C). All three dissolve readily in the corresponding
aldehyde or in polar nonprotic solvents indicating the presence of solvate
d zinc species in solution.