In addition, the structure of dihydrated zinc acetate is known to be
octahedral; the coordination to the metal consists of two oxygen atoms from
two water molecules and four oxygens from chelating acetate groups5.
However anhydrous zinc acetate shows an almost identical ∆v to its hydrated
counterpart. This means that the acetate groups could be tetrahedral with two
chelating acetate groups, but an octahedral coordination by bridging and
shared acetates is another possibility that cannot be ruled out