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

Abstract

A new binuclear complex with mixed-ligands {(ox)(H 2O)OMo(μ-O) 2MoO(H 2O)(bipy)}·2H 2O was obtained from an aqueous reaction of Na 2MoO 4·2H 2O with Nd 2 O 3, H 2 C 2 O 4 , 2,2 ′-bipy, and characterized by single-crystal X-ray diffraction and spectroscopic methods. Crystal data: C 12 H 16 Mo 2 N 2 O 12, 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) Å 3, and Z=4, μ( Mo-Kα)=1.455 mm −1 . The crystal structure consists of neutral binuclear molybdenum {(ox)(H 2O)OMo(μ-O) 2MoO(H 2O)(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⋯O CO hydrogen bonds, π–π stacking interactions between parallel aromatic bipy rings and face-to-face stacking interactions between parallel oxalate groups.