32646-35-8Relevant articles and documents
Preparation, structural characterization, voltammetry and Hirshfeld surface analysis of homoleptic iron(III) thiosemicarbazone complexes
Costa, Waleska R. P.,Deflon, Victor M.,Oliveira, Carolina G.,Souza, Rafael A. C.
, p. 511 - 521 (2020/08/03)
Reactions of FeSO4 precursor with thiosemicarbazones Hatc-R, where R is ethyl (Et) or phenyl (Ph), led to the formation of homoleptic iron(III) complexes of the type [Fe(atc-R)2]HSO4. The characterization of the compounds was performed by spectroscopy techniques, such as FTIR, UV–Vis, besides elemental analysis, conductometry, voltammetry and magnetic susceptibility measurement. The crystalline structure of [Fe(atc-Ph)2]HSO4?H2O was determined by single-crystal X-ray diffraction and revealed the oxidation of the Fe(II) centre to Fe(III) upon complexation of the monoanionic N,N,S-tridentate thiosemicarbazonate ligands. The magnetic susceptibility results showed the paramagnetic property of the iron(III) complexes in the extension of 1 unpaired electron. The electrochemical analyses showed a nearly reversible process of the iron complex, which is slightly influenced by the peripheral substituent groups at the N(4) position of the atc-R1? ligands. Hirshfeld surface analysis revealed that the supramolecular structure of [Fe(atc-Ph)2]HSO4?H2O is stabilized mainly by H···H, C···H/H···C and O···H/H···O interactions.
Example of two novel thiocyanato bridged copper (II) complexes derived from substituted thiosemicarbazone ligand: structural elucidation, DNA/albumin binding, biological profile analysis, and molecular docking study
Biswas, Niladri,Saha, Sandeepta,Khanra, Sumit,Sarkar, Arnab,Prasad Mandal, Deba,Bhattacharjee, Shamee,Chaudhuri, Ankur,Chakraborty, Sibani,Roy Choudhury, Chirantan
, p. 2801 - 2822 (2019/01/04)
Two novel copper (II) substituted thiosemicarbazone Schiff base complexes [Cu(L1)(μ-SCN)]n(NO3)2 (1) and [Cu2(μ-SCN)(SCN)(L2)2](NO3) (2) have been synthesized by condensing substituted thiosemicarbazides like 4-methyl-3-thiosemicarbazide or 4-ethyl-3-thiosemicarbazide with 2-acetylpyridine. Both the metal complexes 1 and 2 are characterized using different spectroscopic techniques like IR, UV-Vis, ESR spectroscopy followed by elemental analysis, cyclic voltammetric measurement and single crystal X-ray structure analysis. X-ray crystal structure analysis reveal that complex 1 is polymeric while complex 2 is dimeric in nature. The coordination geometry around Cu(II) are square pyramidal in which thiosemicarbazone Schiff base ligand coordinate to the central Cu(II) atom in tridentate fashion. The prominent interaction patterns of 1 and 2 with CT-DNA were examined by employing electronic absorption and emission spectral titrations, cyclic voltammetry and viscosity measurements. All the results show that CT-DNA binds with both copper (II) complexes 1 and 2. Furthermore, protein binding ability in vitro of complexes 1 and 2 with both BSA and HSA were carried out using multispectroscopic techniques and a static quenching pattern was observed in both cases. Molecular docking study was employed to ascertain the exact mechanism of action of 1 and 2 with DNA and protein molecules (BSA and HSA). In vitro cytotoxicity activity of complexes 1 and 2 toward AGS and A549 was evaluated using MTT assay which demonstrates that both complexes 1 and 2 have superior prospectus to act as anticancer agents. Communicated by Ramaswamy H. Sarma.
Improved cytotoxicity of pyridyl-substituted thiosemicarbazones against MCF-7 when used as metal ionophores
Akladios, Fady N.,Andrew, Scott D.,Parkinson, Christopher J.
, p. 157 - 170 (2016/02/14)
Zinc is the second most abundant transition metal in the human body, between 3 and 10 % of human genes encoding for zinc binding proteins. We have investigated the interplay of reactive oxygen species and zinc homeostasis on the cytotoxicity of the thiose