15058-97-6Relevant academic research and scientific papers
Temperature and substituent effects on the dissociation constants of 5-azorhodanine derivatives. Semi-empirical quantum mechanical calculation
El-Gogary, Tarek M.,El-Bindary,Hilali, Azza S.
, p. 447 - 455 (2002)
Detailed analysis of the electronic structure and properties of some rhodanine derivatives (RDs) is presented. The aim of the present investigation is to pinpoint the electronic structural similarities and differences, among the series of the studied RDs
Structural and models of dioxouranium(VI) with rhodanine azodyes - V
El-Dissouky,El-Bindary,El-Sonbati,Hilali
, p. 1163 - 1170 (2001)
The synthesis of several new coordination compounds of dioxouranium(VI) heterochelates with bidentate rhodanineazol compounds derived from rhodanine are described. The ligands and uranyl complexes have been characterized by various physico-chemical techniques. The bond lengths and the force constants have been calculated from asymmetric stretching frequency of O-U-O group. The infrared spectral studies showed a monobasic bidentate behaviour with the oxygen and azonitrogen donor system. The ligands contain intramolecular hydrogen bonds.
Stereochemistry, structural and models of novel 5-(4′-derivatives phenyldiazo)-3-phenyl-2-thioxo-4-thiazolidinone complexes
El-Bindary,El-Sonbati,El-Dissouky,Hilali
, (2002)
Copper(II) and cadmium(II) complexes of 5-(4′-derivatives phenyldiazo)-3-phenyl-2-thioxo-4-thiazolidinone (HLn) were prepared, their compositions and physicochemical properties were characterized by elemental analysis, magnetic suseptibility measurements,
Substituents effect on the spectral studies on rutheninum(III) complexes of 5(-4′-derivatives phenyldiazo)-3-phenyl-2-thioxo-4-thiazolidinone
El-Sonbati,El-Bindary,El-Dissouky,El-Gogary,Hilali
, p. 1623 - 1629 (2007/10/03)
A novel series of Ru(III) complexes with 5(-4′-derivatives phenyldiazo)-3-phenyl-2-thioxo-4-thiazolidinone (HLn) have been prepared. The ligands and structural composition of complexes were confirmed and characterized by various physico-chemical techniques. The spectral data were utilized to compute the important ligand field parameters B, β and Dq. The effect of Hamett's constant on the ligand field parameters is also discussed. The spectral and magnetic results commensurate an octahedral environment around the Ru(III) ion. The B-values suggest a strong covalency in the metal-ligand σ-bond and the Dq-values indicate a medium-strong ligand-field. IR spectra show that the ligand is neutral bidentate forming thereby a six-membered chelating ring and concomitant formation of an intramolecular hydrogen bond. The ligands are present in associated form in solution via intermolecular hydrogen bond and act as neutral bidentate coordinated to ruthenium(III).
