Crystal structure of hexa-sodium tetra-serinolium paratungstate B deca-hydrate, [Na 6 {(CH 2 OH) 2 CHNH 3 } 4 ][W 12 O 40 (OH) 2 ]·10H 2 O.

The title polyoxometalate-based organic-inorganic hybrid compound, [Na 6 (C 3 H 10 NO 2 ) 4 ][W 12 O 40 (OH) 2 ]·10H 2 O, consists of a di- μ 3 -hydroxido-tetra- μ 3 -oxido-octa-deca- μ -oxido-octa-deca-oxidododeca-tungstate (para-do-deca-tungstate B) anion, [W 12 O 40 (OH) 2 ] 10- , and six sodium cations coordinated by the oxygen ions of the polyanions, serinol ligands protonated at the N atom, and water mol-ecules. The centrosymmetric paratungstate B anion shows characteristic features in terms of bond lengths and angles. The three-dimensional framework structure is established by bonding of the sodium cations with oxygen ions of the paratungstate B anions and a network consisting of N-H⋯O and O-H⋯O hydrogen bonds of medium strength between the protonated serinol cations, water mol-ecules and the paratungstate B anions. The title compound was also characterized by means of elemental analysis, IR spectroscopy and thermogravimetric analysis.