Author
Umesh Agarwala
Bio: Umesh Agarwala is an academic researcher from Indian Institute of Technology Kanpur. The author has contributed to research in topics: Triphenylarsine & Ruthenium. The author has an hindex of 13, co-authored 49 publications receiving 625 citations.
Topics: Triphenylarsine, Ruthenium, Triphenylphosphine, Rhodium, Pyridine
Papers
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TL;DR: In this article, a new Ru(III) complex, [RuBr3(AsPh3)3] has been synthesized, which is characterised by analyses, conductivity and magnetic measurements, molecular weight and spectral studies (IR and visible).
135 citations
68 citations
TL;DR: In this article, the complexes of 2-mercaptobenzothiazole with Cu(II), Ni, Co, Co and Ag(I) have been synthesized and their structures have been assigned on the basis of analytical properties.
Abstract: The complexes of 2-mercaptobenzothiazole with Cu(II), Ni(II), Co(II), Cd(II), Zn(II), Pb(II), Tl(I), and Ag(I) have been synthesized. Their structures have been assigned on the basis of analytical,...
60 citations
TL;DR: In this article, the ligand acts as bidentate in all the complexes of Fe(II, Co(II), Ru(III), Rh(III, Pd(IV), Ir(III) and Pt(IV) with 1,3,4,thiadiazole-2-thiol-5-amino.
39 citations
34 citations
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TL;DR: In this paper, the reaction of ruthenium(II) complexes with bidentate Schiff base ligands derived by condensing salicylaldehyde with aniline, o-, m- or p-toluidine has been carried out.
Abstract: The reactions of ruthenium(II) complexes, [RuHCl(CO)(PPh3)2(B)] [B = PPh3, pyridine (py) or piperidine (pip)], with bidentate Schiff base ligands derived by condensing salicylaldehyde with aniline, o-, m- or p-toluidine have been carried out. The products were characterised by analytical, i.r., electronic, 1H-n.m.r. and 31P-n.m.r. spectral studies and are formulated as [RuCl(CO)(L)(PPh3)(B)] (L = Schiff base anion; B = PPh3, py or pip). An octahedral structure has been tentatively proposed for the new complexes. The Schiff bases and the new complexes were tested in vitro to evaluate their activity against the fungus Aspergillus flavus.
573 citations
TL;DR: The major ligand abbreviations for heterocyclic thione donors can be found in this paper, where they include triazoline-thiones, trivalines, and trivaline-trivalines.
484 citations
TL;DR: In this article, the effect of deprotonation and coordination on the dimensions of parent heterocyclic thiones, especially those of pyridine-2-thione and benzo-1,3-thiazoline-2.
379 citations
TL;DR: The selectivity and sensitivity of two colorimetric sensors based on the ruthenium complexes N719 and N749 are described, found that mercury ions coordinate reversibly to the sulfur atom of the dyes' NCS groups, which induces a color change in the dye groups at submicromolar concentrations of mercury.
Abstract: The selectivity and sensitivity of two colorimetric sensors based on the ruthenium complexes N719 [bis(2,2‘-bipyridyl-4,4‘-dicarboxylate)ruthenium(II) bis(tetrabutylammonium) bis(thiocyanate)] and ...
300 citations
TL;DR: In this paper, a detailed discussion of the structural aspects of these species based upon X-ray data is presented. But emphasis is placed on detailed discussion on the structural properties of the species.
265 citations