Synthesis and Crystal Structure of Dichlorobis(dimethylsulfoxide)oxoperoxo Molybdenum(VI)

Abstract

Hydrogen peroxide reacts with [MoO2Cl2(dmso)2] to produce orange crystals of the title complex, [MoO(O2)Cl2(dmso)2]. The structure is orthorhombic with distorted pentagonal bipyramidal geometry around the molybdenum ion. A short O‐O bond length suggested the presence of a superoxide, but electron paramagnetic resonance measurements definitely supported the peroxo structure.

New Copper and Oxomolybdate Robson-Type Polynuclear Macrocyclic Complexes: Structure, Spectroscopy, and Electrochemical Properties

“…Values seen for the parent complex [MoO 2 Cl 2 (dmso) 2 ] appear at 918 and 889 cm −1 [34]. Bands at 1107 (1112) cm −1 for complexes 1 and 2 were assigned to the S=O stretching, similar to other sulfoxides complexes [34,35]. In addition, weak bands shown around 600 (625) and 554 (435) cm −1 observed in complex 2 were attributed to metal-nitrogen and metal-oxygen stretchings, respectively.…”

“…The bands (ones in parenthesis are for complex 2) at 1337 (1323), 1533 (1565), and 1656 (1635) cm −1 are characteristic of the macrocyclic ligand tidf 2− and assigned as ](C-O), ](C=C), and ](C=N) modes, respectively [1,33]. Both complexes exhibited bands due to the symmetric and antisymmetric stretchings ](Mo=O) at 932 (958) and 908 (798) cm −1 in that order [34,35]. Values seen for the parent complex [MoO 2 Cl 2 (dmso) 2 ] appear at 918 and 889 cm −1 [34].…”

Biomimicking Oxidative Bromination and DNA Nuclease Activities of a New Structurally Characterised Oxido-Diperoxidomolybdenum(VI) Complex

“…Oxido‐peroxido molybdenum complexes have been widely investigated as oxidation catalysts essentially for epoxidation of alcohols and olefins . But the application of such complexes as potential DNA nuclease is rare.…”