14581-32-9Relevant academic research and scientific papers
Studies on some lanthanide(III) complexes of o-, m- and p-chloro substituted diphenylcarbazones
Veerabhadra Swamy,Sajjanar,Siddalingaiah
, p. 1150 - 1156 (2007/10/03)
Lanthanide(III) complexes of mono chloro substituted derivatives of diphenylcarbazones viz., o-, m- and p-chloro diphenylcarbazones of composition Ln[(DPC)2(NO3)2]NO3. 2H2O (where Ln = La, Ce, Pr, Nd, Sm, Dy and Er) have been synthesized and characterized by elemental analyses, electrical conductance, magnetic measurements, electronic, infrared and 1H NMR spectral techniques. The substituted diphenylcarbazones behave as bidentate neutral ligands coordinating through ketonic oxygen and azo nitrogen and the complexes appear to be six-coordinated. Thermal studies show the presence of two water molecules outside the coordination sphere. The substituted diphenylcarbazones and their respective lanthanide(III) complexes have been tested for antifungal and antibacterial activity. The solution studies have also been carried out. The log K1 values have been correlated with standard oxidation potentials and ionization potentials of the lanthanides. The validity of Born's relation is examined by studying the plot of log K1 vs Z2/r.
