Transition Metal Chemistry
About: Transition Metal Chemistry is an academic journal. The journal publishes majorly in the area(s): Organometallic chemistry & Ligand. It has an ISSN identifier of 0340-4285. Over the lifetime, 5659 publication(s) have been published receiving 58210 citation(s).
Topics: Organometallic chemistry, Ligand, Schiff base, Catalysis, Cobalt
Papers published on a yearly basis
01 Feb 2001-Transition Metal Chemistry
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.
01 Aug 1999-Transition Metal Chemistry
TL;DR: In this paper, tridentate Schiff base ligands derived from 3-hydroxysalicylaldehyde (H2L1), 4-hexylicyloxy-3-methoxy-5-aminobenzylamine (2) with a new amine N-(pyridyl)-2-hydroxy-3methoxide-5amino-4-bromosalicylamide (3-BOW) have been prepared and their metal complexes have been characterized by elemental analyses, conductivity and magnetic susceptibility measurements.
Abstract: Three novel tridentate Schiff base ligands derived from␣the 3-hydroxysalicylaldehyde (H2L1), 4-hydroxysalicylaldehyde (H2L2) and 5-bromosalicylaldehyde (H2L3) with a new amine N-(pyridyl)-2-hydroxy-3-methoxy-5-aminobenzylamine (2) have been prepared. The ligands and their metal complexes have been characterized by elemental analyses, conductivity and magnetic susceptibility measurements, i.r., electronic absorption and 1H and 13C n.m.r. spectroscopy. All complexes are binuclear and, in some, the H2O molecules are coordinated to the metal ion. Antimicrobial activities of the ligands and their complexes have been tested against to the Bacillus subtilis IMG 22 (bacteria), Micrococcus luteus LA 2971 (bacteria) Saccharamyces cerevisiae WET 136 (yeast), and Candida albicans CCM 314 (yeast). Thermal properties of all complexes have been studied by t.g. and d.t.a techniques.
01 Dec 1987-Transition Metal Chemistry
01 Feb 2001-Transition Metal Chemistry
TL;DR: In this paper, terdentate neutral complexes of CuII, NiII, CoII, MnII, ZnII, CdII, HgII, VOII and ZrOII have been prepared using a Schiff base derived from 1-phenyl-2,3-dimethyl-4-aminopyrazol-5-one (4-aminoantipyrine) and acetoacetanilide.
Abstract: Novel terdentate neutral complexes of CuII, NiII, CoII, MnII, ZnII, CdII, HgII, VOII, ZrOII and UO2 II have been prepared using a Schiff base derived from 1-phenyl-2,3-dimethyl-4-aminopyrazol-5-one (4-aminoantipyrine) and acetoacetanilide The structural features of the chelates have been confirmed by microanalytical data, ir, uv–vis, 1H-nmr, esr and mass spectral techniques Electronic absorption and ir spectra of the complexes indicate an octahedral geometry around the central metal ion, except for the VOII and ZrOII complexes which show square pyramidal geometry The monomeric and neutral nature of the complexes are confirmed from their magnetic susceptibility and low conductance values The cyclic voltammogram of the copper complex in MeCN at 300 K shows a quasi-reversible peak for the couple CuII/CuIII at Epc = 047 and Epa = 061 V versus Ag/AgCl and two irreversible peaks for CuII → CuI and CuI → Cu0 reduction at Epc = −063 and − 089 V respectively The esr spectra of copper and vanadyl complexes in DMSO solution at 300 K and 77 K were recorded and their salient features are reported The molecular orbital coefficients (α2, β2) were calculated for complexes The antimicrobial activity of the ligand and its complexes have been extensively studied on microorganisms such as Staphylococcus aureus, Klebsiela pneumoniae, Bacillus subtillis, Escherichia coli, Citrobacter ferundii and Salmonella typhi Most of the complexes have higher activities than that of the free ligand
01 Jun 2001-Transition Metal Chemistry
TL;DR: Metal complexes of a new thiosemicarbazone derived from 3-acetylumbelliferone have been prepared and characterized and have been studied for their possible antitumour activity against HL-60 human leukemia in vitro.
Abstract: Metal complexes of a new thiosemicarbazone derived from 3-acetylumbelliferone (HL) have been prepared and characterized. The complexes have the general formula ML2 · nH2O where MII = Co, Ni, Cu and Zn; n = 0 and 2. The ligand and its complexes have been studied for their possible antitumour activity against HL-60 human leukemia in vitro.
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