Coordination compounds in a pentacyclic aromatic system from 2-aminobenzothiazole derivatives and transition metal ions

Polyhedron ◽  
2006 ◽  
Vol 25 (12) ◽  
pp. 2363-2374 ◽  
Author(s):  
Fabiola Téllez ◽  
Adrian Peña-Hueso ◽  
Noráh Barba-Behrens ◽  
Rosalinda Contreras ◽  
Angelina Flores-Parra
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Coordination Compounds ◽  
Transition Metal Ions ◽  
Aromatic System

2-Thioxo-tetrahydro-4H-imidazol-4-ones, 2-alkylthio-3,5-dihydro-4H-imidazol-4-ones and their coordination compounds with transition metal ions

2011 ◽  
Vol 1 (4) ◽  
pp. 309-343 ◽  
Author(s):  
E. K. Beloglazkina ◽  
A. G. Majouga ◽  
E. A. Manzhelii ◽  
N. V. Zyk ◽  
N. S. Zefirov
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Coordination Compounds ◽  
Transition Metal Ions

scholarly journals Complexes With Biologically Active Ligands. Part 4. Coordination Compounds of Chlorothiazide With Transition Metal Ions Behave as Strong Carbonic Anhydrase Inhibitors

1996 ◽  
Vol 3 (2) ◽  
pp. 79-83 ◽  
Author(s):  
Claudiu T. Supuran
Keyword(s):  
Transition Metal ◽  
Carbonic Anhydrase ◽  
Metal Ions ◽  
Elemental Analysis ◽  
Coordination Compounds ◽  
Transition Metal Ions ◽  
Biologically Active ◽  
Carbonic Anhydrase Inhibitors

Complexes of the diuretic benzothiadiazine derivative chlorothiazide (6-chloro-7-sulfamoyl- 1,2,4-benzothiadiazine-1,1-dioxide) with V(IV); Fe(II); Co(II); Ni(II); Cu(II), Ag(I) and U(VI) were prepared and characterized by elemental analysis, spectroscopic, thermogravimetric, magnetic and conductimetric measurements. The complexes behave as effective inhibitors for two isozymes (I and II) of carbonic anhydrase (CA).

The N-acylhydrazine grouping as a ligand. I. Coordination compounds of Keto- and Enol-N-acylhydrazines with cobalt(II), nickel(II), and copper(II)

1972 ◽  
Vol 25 (2) ◽  
pp. 289 ◽  
Author(s):  
JF Alcock ◽  
RJ Baker ◽  
AA Diamantis
Keyword(s):  
Complex Formation ◽  
Transition Metal ◽  
Metal Ions ◽  
Coordination Compounds ◽  
Chelating Agents ◽  
Transition Metal Ions ◽  
Enol Form ◽  
Oxidation States ◽  
Keto Form ◽  
Formation Of Complexes

Ligands containing the N-acylhydrazine grouping, RCONHKH2, act as bidentate chelating agents with transition metal ions. Cationic complexes of coba1t(11), nickel(11), and copper(11) containing the ligands coordinated in the keto form were isolated, but the ligands also reacted in the enol form producing neutral complexes with cobalt(111) and copper(11). Complex formation in the enol form was facilitated by condensation of the ligands with acetone to produce the N'-iso-propylidene derivatives, from which keto complexes were also isolated. Under certain conditions N-acylhydrazines can act as reducing agents, leading to the formation of complexes containing copper in both oxidation states (I) and (11). Using N-benzoylhydrazine, this reaction can be utilized as a benzoylating medium for amines.

scholarly journals Spectroscopic Studies and DFT Calculations of Cimetidine Complexes with Transition Metal Ions

2017 ◽  
Vol 57 (3) ◽  
Author(s):  
Daniela Olea-Román ◽  
Juan Carlos Villeda-García ◽  
Raúl Colorado-Peralta ◽  
Alejandro Solano-Peralta ◽  
Mario Sanchez ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Coordination Compounds ◽  
Minimum Energy ◽  
Transition Metal Ions ◽  
Spectroscopic Studies ◽  
Bidentate Ligand ◽  
Potential Map ◽  
Coordination Behavior

The coordination behavior of the antiulcer drug cimetidine (cime) towards transition metal ions was investigated. The synthesis and characterization of [Cr(cime)<sub>2</sub>Cl<sub>2</sub>]Cl·3H<sub>2</sub>O, [Co(cime)Cl<sub>2</sub>]·5H<sub>2</sub>O, [Co(cime)<sub>3</sub>Cl]Cl·3H<sub>2</sub>O, [Ni(cime)Cl<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]·H<sub>2</sub>O, [Cu(cime)Cl<sub>2</sub>]·2H<sub>2</sub>O, [Cu(cime)<sub>2</sub>Cl(H<sub>2</sub>O)]Cl·H<sub>2</sub>O, [Cu(cime)<sub>3</sub>Cl<sub>2</sub>]·3H<sub>2</sub>O, [Cu<sub>2</sub>(cime)Cl<sub>4</sub>], and [Zn(cime)Cl<sub>2</sub>]·1.5H<sub>2</sub>O are discussed, where cime acts as monodentate (imidazole N3) or bidentate ligand (N3 and S8). IR, UV-vis, EPR and NMR spectroscopies, mass spectrometry (FAB+), were employed for the characterization. In order to identify the most reactive areas of cimetidine, the electrostatic potential map of the ligand was calculated; also the structures of minimum energy of the coordination compounds were modeled using DFT (B3LYP/def2-TZVP) calculations.

Coordination compounds of thiabendazole with main group and transition metal ions

2002 ◽  
Vol 339 ◽  
pp. 532-542 ◽  
Author(s):  
Jean Michel Grevy ◽  
Fabiola Tellez ◽  
Sylvain Bernés ◽  
Heinrich Nöth ◽  
Rosalinda Contreras ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Coordination Compounds ◽  
Transition Metal Ions ◽  
Main Group
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