Crystal structure of an organic–inorganic hybrid compound based on morpholinium cations and a β-type Anderson polyanion

Abstract

A new organic–inorganic hybrid compound, pentamorpholinium hexahydrogen hexamolybdoferrate(III) sulfate 3.5-hydrate, (C4H10NO)5[FeIII(OH)6Mo6O18](SO4)·3.5H2O, was obtained from an aqueous solution. The polyoxidomolybdate (POM) anion is of the Anderson β-type with a central FeIII ion. Three of five crystallographically independent morpholinium cations are disordered over two sets of sites. An intricate network of intermolecular N—H...O and O—H...O interactions between cations, POMs, sulfate anions and non-coordinating water molecules creates a three-dimensional network structure.

Keywords

• crystal structure
• polyoxidomolybdate
• Anderson-type anion
• organic–inorganic hybrid