Spectroscopic studies of some thiosemicarbazide compounds derived from Girard's T and P

Synthesis, characterization and structural studies of binuclear nickel(II) complexes derived from dihydroxybenzaldehyde thiosemicarbazones, bridged by 1,2-bis(diphenylphosphino)ethane

“…In a mixed ligand system tridentate and monodentate ligands along with the oxygen atom would provide the penta coordinate environment to the metal center (Bipul et al, 2008). Moreover, hydrazine derivative complexes play an important role in inorganic and bioinorganic chemistry, since it has been recognized that many of these complexes may serve as models for biologically important species (Mostafa and Haifaa, 2007). Indeed, a great deal of research work has been carried out on the preparation and characterization of transition metal complexes with these ligands due to their applications in organic chemistry (Antonio et al, 2008).…”

Synthesis, magnetic and spectroscopic studies of Ni(II), Cu(II), Zn(II) and Cd(II) complexes of a newly Schiff base derived from 5-bromo-2-hydroxybezylidene)-3,4,5-trihydroxybenzohydrazide)

“…Moreover, the nephelauxetic ratio β = B/B o = 0.11 indicates appreciable covalent character in this complex [3-6, 8, 12]. So, the magnetic moment value is 3.4 B.M., which demonstrates that the Ni(II) complex is paramagnetic and has a high spin tetrahedral configuration with 3 T 1(F) ground state [3,6,13,14]. Furthermore, the molar conductivity of 10 -3 M in DMSO at room temperature is 73 ohm -1 cm 2 mol -1 indicates that the Ni(II) complex is electrolyte [15].…”

“…Moreover, the synthesis, spectroscopic characterization and reaction of transition metal with hydrazone ligands have shown wide spectra of biological and pharmaceutical activities such as possess antimicrobial, antibacterial, antifungal, anti-inflammatory, anticonvulsant, antitubercular, antiviral, antioxidative effects and inhibition of tumor growth [3][4][5]. The bioinorganic chemistry paid great attention to the Schiff base complexes because many of these complexes have biologically important species [6]. So, the synthesis of new ligands and complexes would be important step in the development of coordination chemistry which exhibit novel properties and reactivity [5].…”

Improved Method for the Determination of Inorganic Anions in Roselle (Hibiscus sabdariffa L.) by Suppressed Ion Chromatography

“…N-{[(ethylamino) thioxomethyl] hydrazine carbonylmethyl} trimethyl ammonium chloride (ETHTC) was prepared as reported earlier 27 . Double distilled deionized water was filtered through 0.2mm whatman membrane.…”