Palladium(II) complexes of terdentate azo ligands with an O,N,S donor set: Synthesis, spectroscopic characterization, X-ray structure and TD-DFT calculations

Acharya, Suvra; Kejriwal, Ambica; Biswas, Achintesh Narayan; Das, Purak; Neogi, Debatra Narayan; Bandyopadhyay, Pinaki

doi:10.1016/j.poly.2012.02.021

Cited by 18 publications

(3 citation statements)

References 38 publications

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“…The chemistry of transition metal complexes incorporating azo ligands have been explored considerably during the last few decades. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Several chemical properties of copper complexes have been attributed to easy accessibility to Cu(I), Cu(II) and Cu(III) oxidation states. 3,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] Although a few studies on the coordination chemistry of copper using several kinds azo ligands have been reported 3,[39][40][41][42][43][44][45] but azo ligands have never been used for the synthesis of copper complexes targeting the oxidase models.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and structure of copper(II) complexes: Potential cyanide sensor and oxidase model

et al. 2016

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The new complexes of compositions [(L a) 2 Cu] and [(L b) 2 Cu] were prepared by treating with 2-hydroxy-5-methyl-3-(2-aryldiazenyl)phenylimino) methyl) benzaldehyde (HL a) and ethyl-2-cyano-3-(2hydroxy-5-methyl-3-(-(2-aryldiazenyl) phenylimino) methyl) phenyl) acrylate (HL b) ligands [where aryl is phenyl for HL 1 a and HL 1 b ; p-methyl phenyl for HL 2 a and HL 2 b ; and p-chloro phenyl for HL 3 a and HL 3 b ] with Cu(OAc) 2 .H 2 O, respectively. Both the bis copper(II) complexes consist of tridentate (N,N,O) anionic ligands, L − a or L − b. X-ray structures of the representative complexes [(L 1 a) 2 Cu] and [(L 2 b) 2 Cu] were determined to confirm the molecular species unequivocally. The molecular structure of copper complexes exhibited tetragonally distorted (Jahn-Teller) geometry consistent with the d 9 configuration of Cu(II) metal ion. Oxidation of benzyl alcohols using the newly synthesized complexes as catalyst has been studied. Photoluminescence properties of [(L 2 a) 2 Cu] and [(L 2 b) 2 Cu] were exploited for selective cyanide recognition. The [(L b) 2 Cu], complexes displayed antibacterial activity toward gram positive and gram negative bacteria.

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Section: Introductionmentioning

confidence: 99%

Synthesis and structure of copper(II) complexes: Potential cyanide sensor and oxidase model

et al. 2016

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“…The conclusions contained the following observations. The coordination sites' bond lengths increased in comparison to earlier findings in free ligands, such as in N(31)‐C(30), N(22)‐C(21), and C(35)‐O(36). Bond lengths of coordination sites decreased compared to earlier values seen in free ligands, such as in N(31)‐N(22), as a result of the creation of a member of the double bond (22) 55 The bond angles of HL are changed by metal coordination.…”

Section: Resultsmentioning

confidence: 68%

Synthesis, structural characterization, in vitro biological activity, and DFT calculations of Cu(II) complex

Amri,

Alaghaz,

Bedowr

et al. 2024

Applied Organom Chemis

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Using a diazonium combination of aniline and 1,3‐diphenylpropane‐1,3‐dione, the Japp‐Klingemann reaction yielded the 1,3‐diphenyl‐2‐(2‐phenylhydrazono)propane‐1,3‐dione ligand (HL). The copper (II) complex has been made using copper (II) acetate salt. The geometry of HL and its Cu (II) chelate were described through CHN analyses, FTIR, UV–Visible, XRD, TGA, and magnetic susceptibility tests. According to the spectral data, the ligand exhibits monobasic bidentate behavior by connecting through the N atom of hydrazone moiety (=N − NH−) by deprotonating beside the oxygen atom of the carbonyl (C=O) group forming octahedral geometry. Density functional theory (DFT) calculations were done by molecular studio software to examine the optimal geometry of HL and its complexity. MCF‐7 and HepG‐2 cell lines demonstrated anticancer action in response to the HL and its copper (II) complex. Additionally, inhibition zone diameter was used to assess the in vitro antibacterial action of HL and particular complex toward Gram +ve bacteria Staphylococcus aureus and Gram‐ve bacteria Escherichia coli (E. coli). Both viscosity and absorption spectra of Calf‐thymus DNA binding experimentations were used to examine the compounds.

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“…23 The Pd(II) complexes of terdentate azo ligands H47 and H48 were reported. 24 The enantiomerically pure P,N-ligands shown in complex 49 were generated in high yields from acetylenedicarboxylate via initial hydrophosphination with diphenylphosphine and in situ coordination, followed by hydroamination with a secondary amine. 25 Treatment of a bis(phenylphosphonite)calix [5]arene ligand with a Pd(II)Cl 2 or Pt(II)Cl 2 source yielded the corresponding cis-complexes.…”

Section: Coordination Chemistrymentioning

confidence: 99%

Nickel, palladium and platinum

Dervisi

2013

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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This report summarizes the literature from 2012 relevant to the chemistry of the group 10 transition elements. Novel coordination and organometallic compounds of these elements are presented and selected applications in the areas of catalysis, bioinorganic/ medicinal chemistry are discussed. HighlightsNotable highlights from 2012 include advances in the fundamental chemistry and applications of high-valent Pd(III/IV) complexes in catalytic transformations 46 and the palladium-catalysed oxidation reactions using simple oxidants such as molecular oxygen.

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Palladium(II) complexes of terdentate azo ligands with an O,N,S donor set: Synthesis, spectroscopic characterization, X-ray structure and TD-DFT calculations

Cited by 18 publications

References 38 publications

Synthesis and structure of copper(II) complexes: Potential cyanide sensor and oxidase model

Synthesis and structure of copper(II) complexes: Potential cyanide sensor and oxidase model

Synthesis, structural characterization, in vitro biological activity, and DFT calculations of Cu(II) complex

Nickel, palladium and platinum

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