Polymerization and characterization of bis(trichlorophenolato)di(pyridine) nickel(II) and bis(tribromophenolato)di(pyridine) nickel(II) dihydrate complexes in solution in the presence of iodine

The syntheses of bis(trihalophenolato)di(pyridine) nickel(II) complexes were achieved in aqueous solution, and their characterizations were performed by Fourier transform infrared (FTIR) spectroscopy, ultraviolet-visible analysis, differential scanning calorimetry, and elemental analysis. The thermal polymerization of these complexes was studied in toluene solution in the presence of iodine. The effect of time, temperature, and amount of iodine added on the percentage conversion, structure of polymers, and intrinsic viscosity ([eta]) were investigated. Polymers were characterized by FTIR, H-1-NMR, and C-13-NMR spectroscopic analyses, glass-transition temperatures determined by differential thermal analysis, and [eta] values determined by the viscometric method. (C) 2002 Wiley Periodicals, Inc.


Yiğit, S.; Kısakürek, D.; Türker, L; Toppare, Levent Kamil; Akbulut, Ural (Elsevier BV, 1989-02-01)
Electroinitiated polymerization of bis(trichlorophenoxo) ethylenediamine copper (II) complex was carried out in dimethyl-formamide at various anodic peak potentials of the complex. The oxidation and reduction peak potentials were determined by cyclic voltammetry. These potentials were measured in tetrabutylammonium fluoroborate-dimethylformamide supporting electrolyte-solvent couple at room temperature. Polymerization reactions were carried out under air and nitrogen atmospheres using a constant potential a...
Synthesis and characterization of new bis(diphenylphosphino)aniline ligands and their complexes: X-ray crystal structure of palladium(II) and platinum(II) complexes, and application of palladium(II) complexes as pre-catalysts in Heck and Suzuki cross-coupling reactions
AYDEMİR, MURAT; DURAP, FEYYAZ; BAYSAL, AKIN; AKBA, OSMAN; Gumgum, Bahattin; Özkar, Saim; Yildirim, Leyla Tatar (Elsevier BV, 2009-08-05)
Two new bis(diphenylphosphino)isopropylphenylamines, (PPh(2))(2)N-C(6)H(4)-CH(CH(3))(2), having the isopropyl substituent at the carbon atom 2 (1) or 4 (2), were prepared by the aminolysis of chlorodiphenylphosphine with isopropyl substituted aniline at the ortho- or para-position, respectively, under anaerobic conditions. Oxidation of 1 and 2 with either aqueous hydrogen peroxide, elemental sulfur or grey selenium in thf gave the corresponding oxides, sulfides and selenides (Ph(2)P=E)(2)N-C(6)H(4)-CH(CH(3)...
SACAK, M; Akbulut, Ural; KISAKUREK, D; TURKER, L; Toppare, Levent Kamil (Wiley, 1989-04-01)
Electroninitiated polymerization of bis(trichlorophenoxo)‐N,N,N′,N′‐tetramethylethylene diamine copper(II) was achieved in acetonitrile at various peak potentials of the monomer. A constant potential approach was selected in polymerization reactions. Electrolyses were carried out under air, nitrogen, and oxygen atmospheres. Structural analyses of the polymers were done by 1H‐NMR and 13C‐NMR FT–IR spectroscopy. Molecular weights of the polymers were determined by vapor pressure (isopiestic) method.
Synthesis, characterization and crystal structure of bis(acetylacetonato)dimethanolnickel(II): [Ni(acac)(2)(MeOH)(2)]
Metin, Oender; Yildirim, Leyla Tatar; Özkar, Saim (2007-09-01)
Bis(acetylacetonato)dimethanolnickel(II) was isolated as turquoise needle-like crystals by recrystallization of bis(acetylacetonato)nickel(II) from methanol solution and fully characterized by H-1 and C-13 NMR, FT-IR spectroscopy, and single crystal X-ray diffraction. The X-ray structure analysis gives essentially a triclinic unit cell of bis(acetylacetonato)dimethanolnickel(II) containing one centrosymmetric molecule of the formula Ni[(O2C2H7)(2)(OHCH3)(2)], The Ni(II) ion is located at the inversion centr...
Polymerization by bis(ethylxanthato)nickel(II) as an initiator. I. Polymerization of styrene oxide
Kayaturk, N; Usanmaz, A; Önal, Ahmet Muhtar (1999-01-01)
Bis(ethylxanthato)nickel(II) was identified by FTIR, DSC, MS and X-ray powder diffraction methods. It has a monoclinic structure with cell parameters of a=14.800(3)A, b=14.088(1)A, c=13.274(8)A; beta=101.13 degrees(8)degrees. It decomposes at above 170 degrees C. Styrene oxide was polymerized with bis(ethylxanthato)nickel(II) under air, nitrogen and vacuum conditions. The structure of the resulting polymers was determined by means of FTIR, C-13 NMR, X-ray diffraction, vapor pressure osmometer and DSC. Low m...
Citation Formats
L. Molu, “Polymerization and characterization of bis(trichlorophenolato)di(pyridine) nickel(II) and bis(tribromophenolato)di(pyridine) nickel(II) dihydrate complexes in solution in the presence of iodine,” JOURNAL OF APPLIED POLYMER SCIENCE, pp. 2232–2239, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/63218.