Synthesis, crystal structure and characterization a new ionic complex MoO2Cl3(MeOH)·H3tptz·Cl2 (tptz = 2,4,6-tris(2-pyridyl)-1,3,5-triazine) as epoxidation catalyst

• A new Mo(VI) complex with formula MoO2Cl3(MeOH)⋯H3tptz·Cl2 has been prepared.
• Using tptz = 2,4,6-tris(2-pyridyl)-1,3,5-triazine as ligand.
• The epoxidation of some alkenes with 100% conversion and selectivity is promising.
• The antbacterial activity of prepared Mo complex have been evaluated.

[MoO2Cl3(MeOH)]·H3tptz·Cl2 (1) (where tptz is 2,4,6-tris(2-pyridyl)-1,3,5-triazine) was prepared via reaction of MoO3 with tptz in a stoichiometric ratio of 1:1 in concentrated HCl at room temperature. It was characterized, by means of elemental analysis, FTIR, UV–Vis, 1H NMR and single-crystal X-ray diffraction. The asymmetric unit of the molybdenum(VI) salt 1 contains a 2,2′,2″-(1,3,5-triazine-2,4,6-triyl)tripyridinium cation, a cis-dioxotrichloridomethanolmolybdenum(VI) monoanion and two chloride anions to achieve electrical neutrality. The oppositely charged components in the structure of 1 are bound together by an intricate system of weak N(O)–H⋯Cl hydrogen bonds. The interactions between hydrogen bond donor and acceptor giving rise to three dimensional networks. It was also found that compound 1 successfully catalyzes the epoxidation of various alkenes such as cycoloctene, cyclohexene, norbornene, styrene, α-methyl styrene and trans-stilbene with 30–100% conversion and 80–100% selectivity using tert-butyl hydroperoxide (TBHP) as oxidant. The catalyst can be easily recovered from the reaction mixture and reused at least for three times without significant loss of activity. The superior antibacterial activity of 1 against Bacillus subtilis is also described in this presentation.

A new Mo(VI) complex with formula MoO2Cl3(MeOH)⋯H3tptz·Cl2 Using tptz = 2,4,6-tris(2-pyridyl)-1,3,5-triazine as ligand has been prepared. The epoxidation of some alkenes with 100% conversion and selectivity is promising. The antibacterial activity of prepared Mo complex have been evaluated.Figure optionsDownload as PowerPoint slide