Hetero-binuclear Chelates of Copper(II) and Silver(I)

Liu, C. H.; Liu, Chui Fan

doi:10.1021/ja01481a015

Cited by 16 publications

(3 citation statements)

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“…Some copper(l I) complexes with this ligand have been studied in aqueous solution, or precipitated and characterized using IR, diffuse reflectance, polarographic and potentiometric techniques [1][2][3][4][5][6][7], but no data have been reported on the thermal stabilities and decomposition reactions.…”

mentioning

confidence: 99%

The thermal decomposition reactions of bis-(pyridine-2-aldoxime)-copper(II) complexes

Bucci

Carunchio

Magrì

et al. 1984

Journal of Thermal Analysis

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The thermal properties of some complexes of copper(l I) with pyridine-2-atdoxime (HPAO), where the ligand appears either as the ion (PAO-) or as a neutral molecule, were determined in vacuo and in dynamic nitrogen and oxygen gas atmospheres. The study was carried out by thermoanalytical (TG, DTG. DTA), spectroscopic and spectrometric (UVvisible, IR, diffuse reflectance, mass) techniques.The initial decomposition temperature is influenced by the number of acid hydrogens in the complex; the thermal stability sequence in vacuo is:The thermal decomposition reactions occur in several separate steps, the first of which gives rise to partial ligand decomposition, the reduction of copper(ll) to copper(I), and the conversion of the residual pyridine-2-aldoxime into acid amide.Several papers have been published on the complexes of metal ions with pyridine-2--aldoxime (CsH6N20; HPAO). Some copper(l I) complexes with this ligand have been studied in aqueous solution, or precipitated and characterized using IR, diffuse reflectance, polarographic and potentiometric techniques [1][2][3][4][5][6][7], but no data have been reported on the thermal stabilities and decomposition reactions.Following thermoanalytical studies of the complexes of 3 d metal ions with organic ligands [8][9][10][11], in this paper we report results on the thermal behaviour of the complexes [Cu(C6H5N20)2Hn]CI n (where n = 0, 1 or 2). The study has been carried out by thermogravimetry, differential thermal analysis and mass spectrometry; the proposed decomposition mechanisms are supported by analysis of the stable intermediates obtained by interruption of the heating of the samples at the appropriate temperatures. Experimenta I ApparatusThe thermal measurements were carried out by means of a Perkin-Elmer TGS-2 thermal analyser and DTA 1700. TG runs were made in vacuo and in dynamic nitrogen

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confidence: 99%

The thermal decomposition reactions of bis-(pyridine-2-aldoxime)-copper(II) complexes

Bucci

Carunchio

Magrì

et al. 1984

Journal of Thermal Analysis

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“…Ni(3,5-L)4-Br2: 700 vs, 752 vs, 868 vs, 940 w, -1020 s, 1050 sh, 1155 vs, 1175 s, 1248 m, 1275 vw, 1320 w, 1380 sh, 1410-1480 vs, vbr, 1600 vs, 2865 w, 2920 s, 2965 m, and 3050 w. The bands of the anions are reported in Table III and Fig. 4 and 5. Their assignments were made according to previously reported investigations.4 ~9 Visible spectra of the solutions and of the solids in Nujol mull were taken with a Cary Model 14 recording spectrophotometer and are reported in Tables IV-VII and Fig.…”

Section: Foundmentioning

confidence: 98%

Coordination Compounds of Nickel(II) Salts with Substituted Pyridines. Square-Planar, Tetrahedral, and Octahedral Compounds of 3,4- and 3,5-Dimethylpyridine

Buffagni¹,

Vallarino²,

Quagliano³

1964

Inorg. Chem.

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“…Moreover, these oximes have the ability to form hetero-bimetallic chelates, which makes them potential candidates for the preparation of mixed metal semiconductors with a prescribed molar ratio (Liu & Liu, 1961). Cu 2 O and CuO are stable p-type semiconductors and a variety of methods have been used to fabricate thin films of copper oxides (Barreca et al, 2009;Bayansal et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Structural and thermal characterization of copper(II) complexes with phenyl-2-pyridylketoxime and deposition of thin films by spin coating

et al. 2015

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Four copper(II) oxime complexes, [Cu(HPPK)(PPK)X] (HPPK = phenyl-2-pyridylketoxime and X = CI − (I ), CF3COO − (II ), C3F7COO − (III ), and [Cu(PPK)2]2 (IV )), were synthesized and characterized by elemental analysis, infrared spectroscopy (IR), and single-crystal X-ray diffraction (XRD). XRD analysis revealed that I -III contain copper(II) coordinated by four nitrogen atoms from two oxime molecules in the basal plane and one monodentate anion X in the apical position of a distorted square pyramid. Complex IV is dimeric and it is formed by two Cu(PPK)2 units. Bridges between these units are formed by the two oxygen atoms of the deprotonated oxime groups. Thermal stability of I -IV was investigated by thermogravimetric analysis (TGA) in air and in nitrogen atmosphere, respectively. Evolved gaseous decomposition products were characterized by IR. I -IV decompose via multistep processes. Fluorocarbons and CO2 were observed to be the most abundant gaseous species evolved. Preliminary ammonolysis experiments were performed to examine the possibility of using II and IV as precursors for the synthesis of copper nitride. Moreover, solutions of IV were spin-coated onto silicon substrates. Surface structure and morphology of the resulting films were studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM) and layers with island-like distribution of material were observed.

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Hetero-binuclear Chelates of Copper(II) and Silver(I)

Cited by 16 publications

References 0 publications

The thermal decomposition reactions of bis-(pyridine-2-aldoxime)-copper(II) complexes

The thermal decomposition reactions of bis-(pyridine-2-aldoxime)-copper(II) complexes

Coordination Compounds of Nickel(II) Salts with Substituted Pyridines. Square-Planar, Tetrahedral, and Octahedral Compounds of 3,4- and 3,5-Dimethylpyridine

Structural and thermal characterization of copper(II) complexes with phenyl-2-pyridylketoxime and deposition of thin films by spin coating

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