[Mo10S10O10(OH)10(H2O)5]: a novel decameric molecular ring showing supramolecular properties

The new decameric [Mo10S10O10(OH)10(H2 O)5] oxo–thio ring was prepared by self-condensation of [Mo2S2O2]2+ upon addition of hydroxide ion; crystals were obtained in dimethylformamide in the presence of tetrabutylammonium iodide; X-Ray diffraction analysis reveals a 10-membered ring-shaped cluster; the cyclic architecture exhibits a supramolecular assembly resulting from hydrogen bonding between two iodide anions and inner water molecules of the open cavity of the Mo10-ring.