An interesting network of an asymmetric binuclear molybdenum complex formed via OH⋯O and CH⋯OCO hydrogen bonds and stacking interactions

A new binuclear complex with mixed-ligands {(ox)(H2O)OMo(μ-O)2MoO(H2O)(bipy)}·2H2O was obtained from an aqueous reaction of Na2MoO4·2H2O with Nd2O3, H2C2O4, 2,2′-bipy, and characterized by single-crystal X-ray diffraction and spectroscopic methods. Crystal data: C12H16Mo2N2O12, M=572.15, monoclinic, P2(1)/c, a=6.8400(10), b=11.6033(2), c=22.9006(4) Å, β=95.8590(10)°, V=1808.05(5) Å3, and Z=4, μ(Mo-Kα)=1.455 mm−1. The crystal structure consists of neutral binuclear molybdenum {(ox)(H2O)OMo(μ-O)2MoO(H2O)(bipy)} units and crystallization water molecules, which were held together to an extensive three-dimensional network via several interactions such as conventional OH⋯O, aromatic CH⋯OCO hydrogen bonds, π–π stacking interactions between parallel aromatic bipy rings and face-to-face stacking interactions between parallel oxalate groups.