Synthesis and characterization of isothiocyanato complexes of dioxotungsten(VI) with mannich base ligands: Precursors for the preparation of pure phase nanosized tungsten(VI) trioxide

Journal of Saudi Chemical Society

Haq N. Sheikh¹  Rimpy Gupta¹  Bansi L. Kalsotra¹  Vishal Singh² 

[1] Department of Chemistry, University of Jammu, 1800 06 Jammu, India;Department of Physics, University of Jammu, 1800 06 Jammu, India;

关键词: Antibacterial activity;    Calcination;    Rod-like WO3;   

DOI  :  10.1016/j.jscs.2013.02.009

来源: DOAJ

【 摘 要 】

Six isothiocyanato complexes of dioxotungsten(VI) with Mannich base ligands having the formula [WO2(NCS)2L-L] (where L-L = N-[1-morpholinobenzyl] acetamide (MBA), N-[1-piperidinobenzyl] acetamide (PBA), N-[1-morpholino(-4-nitrobenzyl)] benzamide (MPNBB), N-[1-piperidino(-3-nitrobenzyl)] benzamide (PMNBB), N-[1-morpholino(-2-nitrobenzyl)] acetamide (MONBA) and N-[1-morpholino(-3-nitrobenzyl)] acetamide (MMNBA)) have been synthesized by the reaction of tetraisothiocyanatodioxotungsten(VI) anion with the ethanolic solution of the corresponding ligand in aqueous medium in the presence of HCl. The complexes have been characterized by elemental analyses, FTIR, 1H NMR, 13C NMR, DEPT, ESI mass spectra, TGA/DTA, molar conductivity measurements, electronic spectra, magnetic moment measurements, SEM and XRD. Finally, the ligands and the corresponding complexes have been tested against Agrobacterium sp BN-2A and it has been observed that complexes show enhanced activity as compared to the ligands. The complexes on calcination give rod-like WO3 nanoparticles.

【 授权许可】

Unknown