Synthesis, characterization and photochemistry of a new heptamolybdate supported magnesium-aqua coordination complex

Journal of Chemical Sciences

Pallepogu Raghavaiah²  Bikshandarkoil R Srinivasan1¹  Savita S Khandolkar¹ 

[1] Department of Chemistry, Goa University, Goa 403 206, India$$;Department of Chemistry, Dr. Harisingh Gour University, Sagar - 470003 (M.P.), India$$

关键词: Heptamolybdate;    Hexamethylenetetramine;    𝜇2-bridging bidentate ligand;    Photocatalysis;    Cyclic voltammogram.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

The synthesis, crystal structure, redox characteristics and photochemistry of a new heptamolyb-date supported magnesium-aqua coordination complex viz. (hmtH)2 [{Mg(H2O)5}2 {Mo7O24}]·3H2O 1 (hmt = hexamethylenetetramine) is reported. The cyclic voltammogram reveals quasireversible redox behaviour while the degradation of rhodamine B (RhB) by 1 under sunlight irradiation indicates its photocatalytic activity. In the crystal structure of 1, two [Mg(H2O)5]2+ units are linked by a 𝜇2-bridging bidentate hepta-molybdate ligand resulting in a heptamolybdate supported magnesium-aqua coordinated dianionic complex [{Mg(H2O)5}2 {Mo7O24}]2− charge balanced by two (hmtH)+ cations. The cations, anions and the lattice water molecules are linked by several hydrogen bonding interactions.

【 授权许可】

Unknown