ABSTRACT We report the electrocatalytic performance in hydrogen evolution reaction (HER) of three Ni(II) complexes based on benzil bis(thiosemicarbazone) ligands derived from 1,2‐diphenylethanedione and 4‐isopropyl‐3‐thiosemicarbazide (L 1 H 2 ), 4‐methyl‐3‐thiosemicarbazide ) or 3‐thiosemicarbazide 3 ). Cyclic voltammetry dimethylformamide (DMF) exhibit two diffusion‐controlled reversible processes at negative potentials, corresponding to [Ni II L ]/[Ni 3· ] − Ni /Ni I reduction processes....

Nowadays, the search for new chemotherapeutic agents with low toxicity and high selectivity is a major concern. In this paper, we report synthesis characterization of hybrid thiosemicarbazone/hydrazone ligand in its neutral form (L1H2) as chloride salt ([L1H3]Cl)-, three diorganotin (IV) complexes, one complex Sn (IV). The compounds have been fully characterized by IR, mass spectra, 1H, 13C, 119Sn NMR, CP/MAS single crystal X-ray diffraction. organotin empirical formula [SnR2L1] (R = Me, Bu,...

Reactions of benzil bis(thiosemicarbazone), LH(6), with M(NO(3))(2).nH(2)O (M = Zn, Cd, and Ni), in the presence LiOH.H(2)O, show versatile behavior this molecule. The structure ligand, thiosemicarbazone moieties on opposite sides carbon backbone, changes to form complexes by acting as a chelating Complexes these metal ions empirical formula [MLH(4)] were obtained, although they different molecular structures depending their coordinating preferences. zinc complex is first example crystalline...

The widespread use of organic dyes in industrial processes has led to a considerable release these compounds into water systems, making the removal contaminants from freshwater pressing challenge. Photocatalysis, particularly through coordination compounds, presents promising solution this problem. In study, we report synthesis and characterization three novel dissymmetric bis(thiosemicarbazone) ligands their corresponding nickel(II) complexes, which have been extensively analyzed using...

The extensive industrial use of organic dyes causes large amounts these substances to arrive at water sources, so nowadays, compound removal from fresh is a major concern. photocatalysts an interesting approach solving this problem, with coordination compounds playing outstanding role. We report the selective synthesis and characterization three new dissymmetric bis(thiosemicarbazone) ligands their nickel(II) zinc(II) complexes, which have been fully characterized by several techniques....

The reaction of 5-methoxy-5,6-diphenyl-4,5-dihydro-2H-[1,2,4]triazine-3-thione L1H2OCH3 with copper(II) chloride leads to the formation an organic molecule L2 containing two triazine rings linked by a new S−S bond. A binuclear complex, 1, L1 is also isolated. copper(I) yields hexanuclear cluster copper(I), 2, in which copper atoms form distorted octahedron ligand acting as NS chelate and sulfur bridge, giving ion trigonal geometry one N S atoms. In any disulfide metal salts, complexes this...

The coordination behaviour of the Schiff-base, benzil bis(benzoylhydrazone), LH(2) towards divalent nickel, lead, cadmium, zinc and copper ions has been investigated. complexes have fully characterized by techniques including (113)Cd (207)Pb NMR, as well (13)C CP/MAS NMR single crystal X-ray diffraction. All general formula [ML](n) (n = 1-3 depending on metal ion), with ligand doubly deprotonated. nickel complex [NiL] is a monomeric compound, lead [PbL](2) shows binuclear structure, whereas...

Six organotin (IV) complexes with two ligands derived from 2,3‐butanedione and thiosemicarbazide have been synthesized fully characterized by several spectroscopic techniques, including 119 Sn NMR single crystal X‐ray diffraction. Reactions of the ligand diacetyl‐2‐(thiosemicarbazone)‐3‐(3‐hydroxy‐2‐naphthohydrazone), L 1 H 2 , SnR Cl (R = Me, Bu, Ph) lead to obtaining – 3 general formula [SnR ] Me R Bu Ph ), in which is doubly deprotonated behaves as a N SO donor, whereas reactions...

Abstract A new dissymmetric thiosemicarbazone ligand containing a hydrazonequinoline arm, H 2 AMeTsQ, and its chloride salt, [H 3 AMeTsQ]Cl, were synthesized. Nine complexes of cadmium mercury with different structural characteristics obtained under reaction conditions as the charge can be controlled by varying amount base. 113 Cd 199 Hg NMR spectroscopy together X‐ray diffraction indicated that form monomeric dimeric structures even coordination polymer. Fluorescence showed both protonated...

Three benzil based, macrocyclic oxygen-, nitrogen-, and sulfur-containing ligands, (3,4,10,11 -tetraphenyl-1,2,5,6,8,9,12,13-octaazacyclotetradeca-7,14-dithione-2,4,9,11 -tetraene) ethanol (L 1 ), 10,1 l-diethoxy-3,4,10,11-tetraphenyl-1,2,5,6,8,9,12,13-octaazacyclotetradeca- 7.14-dithione-2,4-diene 2 -tetraphenyl-1,2,5,6,8,9,12,13-octaazacyclotetradeca- 7.14-dione-2,4,9,l 1-tetraene) 3 ); a cyclic ligand, 6-ethoxy-l,6-diphenyl-4-oxo- 3,4,5,6-tetrahydro-2,3,5-triazine 5 ) two open chain...

Abstract Polycrystalline Ba 2 LnSbO 6 (Ln = Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb) are cubic, perovskite‐type compounds, space group Fm3m (No. 225), Z 4, with a values from 8.544(2) Å for NdSbO to 8.368(1) YbSbO . X‐ray diffraction data all the compounds and results of magnetic measurements two them given.

Reactions of diphenyllead(IV) chloride with benzil bis(thiosemicarbazone) (L1H6) and bis(4-methyl-3-thiosemicarbazone) (L1Me2H4) afforded the first complexes containing moiety ligands. The new show diverse structural characteristics depending on ligand working conditions. Complexes [PbPh2Cl(L1H5)].3H2O (1) [PbPh2Cl(L1Me2H3)] (3) are mononuclear species in which ligands partially deprotonated lead atom has a C2N2S2Cl environment distorted pentagonal bipyramid coordination geometry. Complex...