Premium
Diperoxo Complexes of Vanadium(V) Containing Mannich Base Ligands
Author(s) -
Mahajan Simpy,
Singh Balgar,
Sharma Mohita,
Sheikh H. N.,
Kalsotra B. L.
Publication year - 2011
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201190060
Subject(s) - chemistry , vanadium , benzamide , acetamide , formamide , inorganic chemistry , denticity , molar conductivity , polymer chemistry , medicinal chemistry , nuclear chemistry , metal , elemental analysis , organic chemistry
The vanadium(V) peroxo complexes containing Mannich base ligands having composition Na[VO(O 2 ) 2 (L‐L)]·H 2 O [where L‐L=morpholinobenzyl acetamide (MBA), piperidinobenzyl acetamide (PBA), morpholinobenzyl benzamide (MBB), piperidinobenzyl benzamide (PBB), morpholinomethyl benzamide (MMB), piperidinomethyl benzamide (PMB), morpholinobenzyl formamide (MBF), piperdinobenzyl formamide (PBF)] have been reported. The complexes have been prepared by stirring vanadium pentoxide with excess of 30% aqueous‐H 2 O 2 followed by treatment with ethanolic solution of the ligand and finally maintained the pH of the reaction mixture by adding dilute solution of sodium hydroxide. The synthesized complexes have been characterized by various physico‐chemical techniques, via elemental analysis, molar conductivity, magnetic susceptibility measurements, infra red, electronic, mass, 1 H NMR spectral and TGA/DTA studies. These studies revealed that the synthesized complexes are uni‐univalent electrolytes and diamagnetic in nature. The ligands are bound to metal in a bidentate mode through carbonyl oxygen and the ring nitrogen. Thermal analysis result provides conclusive evidence for the presence of one molecule of lattice water in the complexes. Mass spectra confirm the molecular mass of the complexes.