A Polyoxomolybdate Coordinated By Glycine Ligands: K-4[Mo8o26(Nh3ch2coo)(2)]Center Dot 6h(2)O

The title compound, tetrapotassium bis(glycine) hexacosaoxooctamolybdenum( VI) hexahydrate, K-4[Mo8O26(NH3CH2COO) (2)] . 6H(2)O, consists of a molecular network of centrosymmetric [Mo8O26(NH3CH2COO)(2)](4-) anions, K+ cations and water molecules, which interact by an extensive hydrogen-bonding network. The [Mo8O26(NH3CH2COO)(2)](4-) anion is constructed from MoO6 and MoO5(OOCCH2NH3) octahedral units, where the latter has O atoms of terminal and bridging oxo groups as well as those of glycine ligands.