Nickel(II)–PPh₃ Complexes of S,N‐Substituted Thiosemicarbazones – Structure, DFT Study, and Catalytic Efficiency

The Coordination chemistry and cyclic voltammetry exploration of Cu(II), Co(II), Ni(II) and Zn(II) complexes of novel (E)-3,4-dichloro-N-(2-(1-(pyridin-2-yl)ethylidene)hydrazine-1-carbonothioyl) benzamide ligand

“…As expected and according to the fill d-orbital in d 10 Zn compounds and their diamagnetic manner no dd transitions were observed in their electronic spectra. The electronic spectra of the chloride compounds, [(DEHC)CuCl], [(DEHC)CoCl] and [(DEHC)NiCl] confirm the four coordinate square planar geometrical shape around the central metal ions Cu(II), Co(II) and Ni(II) via presence of a single broad peak at 595 (20), 607 (31) and 603 nm(18 M -1 cm -1 ) respectively which are atributed to dxy-dx2-y2 transition. See Figures 10-11.…”

“…Thiosemicarbazone metal complexes are considered as one of the most significant category of N and S donor ligands [14] due to their extremely interesting biological [15][16][17][18], medicinal [19][20][21][22], pharmacological [23][24][25] chemical features [26] and in bioinorganic operations [27][28]. Different reports of acetophenone thiosemicarbazone derivatives and their Copper(II) and Nickel(II) complexes have revealed motivating structural electronic shape, bonding properties [29][30][31] and antimicrobial properties [32][33][34]. A numerous interest of NSO donor ligands has been appeared in coordination chemistry because of their amazing structural and biological characteristics [35][36][37][38][39].…”

Nickel(II)-PPh3 complexes with ONS and ONN chelating thiosemicarbazones: synthesis and inhibition potential on influenza A viruses

“…As is known, the 2-hydroxy-arylidene-thiosemicarbazones were ONS (N 4 -substituted) or ONN (S-substituted) chelating ligands and methyl or phenyl groups were the generally preferred substituents. 38,42,44 In this study, new nickel(II)-triphenylphosphine complexes with S-methyl, ethyl, propyl, butyl, pentyl, hexyl, and heptyl alkylated 2-hydroxy-3-methoxy-benzaldehyde thiosemicarbazones were synthesized and characterized. These tetracoordinated complexes with long alkyl chains such as hexyl and heptyl were first reported and their ONN (3c and 3d), had considerable inhibitory effect on plaque formation of influenza A virus at lower concentrations than the GI 50 values.…”

Thiosemicarbazone Complexes of Transition Metals as Catalysts for Cross-Coupling Reactions

“…From the experimental data, it is stated that a large amount (0.05 mol) of complex is used for 0.01 mol of PhBr but presumably this is a typographical error with the correct amount of complex to be probably 0.05 mmol. Güveli et al have prepared a series of thiosemicarbazone complexes 35 derived from o-hydroxyacetophenone in which either O,N,Sor O,N,N-tridentate coordination is observed [130]. In addition to structural and computational studies, the authors also examined the coupling of PhMgBr with PhBr in the presence of these compounds.…”

“…A 300:1 substrate to catalyst ratio was used and conversions of 28-48% were obtained. [130]. In addition to structural and computational studies, the authors also examined the coupling of PhMgBr with PhBr in the presence of these compounds.…”