Crystal structure of bis-(diiso-propyl-ammonium) molybdate.

The organic-inorganic title salt, (C6 H16 N)2 [MoO4 ] or ( i Pr2 NH2 )2 [MoO4 ], was obtained by reacting MoO3 with diiso-propyl-amine in a 1:2 molar ratio in water. The molybdate anion is located on a twofold rotation axis and exhibits a slightly distorted tetra-hedral configuration. In the crystal structure, the diiso-propyl-ammmonium ( i Pr2 NH2 )+ cations and [MoO4 ]2- anions are linked to each other through N-H⋯O hydrogen bonds, generating rings with R 12 12 (36) motifs that give rise to the formation of a three-dimensional network. The structure was refined taking into account inversion twinning (ratio of ca 4:1 between the two domains).