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| Description
| - The synthesis and characterization of [Cu(3-Me-2-tpc)(2)(nia)(2)] (1), [Cu(5-Me-2-tpc)(2)(nia)(2)] (2), [Cu(2-tpc)(2)(nia)(2)] (3) and [Cu(5-Me-2-tpc)(2)(nia)(2)(H2O)] (4) (where 2-tpc is 2-thiophenecarboxylate, 3-Me-2-tpc is 3-methyl-2-thiophenecarboxylate, 5-Me-2-tpc is 5-methyl-2-thiophenecarboxylate and nia is nicotinamide) are reported. The complexes under study were characterized by electronic, IR, EPR spectroscopy, magnetic susceptibility over the temperature range and X-ray structure analysis. The coordination arrangement around each copper(II) atom is a distorted tetragonal bipyramidal. The discrepancies between two Cu-O axial bond distances increases in the order: 0 angstrom (complex 1) { 0.050 angstrom (complex 3) { 0.209 angstrom (complex 2) { 0.516 angstrom (complex 4, Cu1) { 0.746 angstrom (complex 4, Cu2), indicating that in the same order a distortion of the respective tetragonal bipyramids increases. This is in a good agreement with the ligand field band position in their electronic spectra. The complex molecules of all compounds are connected through H-bonds into supramolecular chains or frameworks. Spectral and magnetic behaviours are discussed with regard to X-ray parameters. Small negative value of Weiss constants confirm an existence of a very weak antiferromagnetic interaction between Cu(II) magnetic center in the crystal lattice. The EPR parameters are typical for a tetragonal bipyramidal Cu(II) complexes. The g(av) values at r.t. are somewhat lower than those at 77 K.
- The synthesis and characterization of [Cu(3-Me-2-tpc)(2)(nia)(2)] (1), [Cu(5-Me-2-tpc)(2)(nia)(2)] (2), [Cu(2-tpc)(2)(nia)(2)] (3) and [Cu(5-Me-2-tpc)(2)(nia)(2)(H2O)] (4) (where 2-tpc is 2-thiophenecarboxylate, 3-Me-2-tpc is 3-methyl-2-thiophenecarboxylate, 5-Me-2-tpc is 5-methyl-2-thiophenecarboxylate and nia is nicotinamide) are reported. The complexes under study were characterized by electronic, IR, EPR spectroscopy, magnetic susceptibility over the temperature range and X-ray structure analysis. The coordination arrangement around each copper(II) atom is a distorted tetragonal bipyramidal. The discrepancies between two Cu-O axial bond distances increases in the order: 0 angstrom (complex 1) { 0.050 angstrom (complex 3) { 0.209 angstrom (complex 2) { 0.516 angstrom (complex 4, Cu1) { 0.746 angstrom (complex 4, Cu2), indicating that in the same order a distortion of the respective tetragonal bipyramids increases. This is in a good agreement with the ligand field band position in their electronic spectra. The complex molecules of all compounds are connected through H-bonds into supramolecular chains or frameworks. Spectral and magnetic behaviours are discussed with regard to X-ray parameters. Small negative value of Weiss constants confirm an existence of a very weak antiferromagnetic interaction between Cu(II) magnetic center in the crystal lattice. The EPR parameters are typical for a tetragonal bipyramidal Cu(II) complexes. The g(av) values at r.t. are somewhat lower than those at 77 K. (en)
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| Title
| - Study of copper(II) thiophenecarboxylate complexes with nicotinamide
- Study of copper(II) thiophenecarboxylate complexes with nicotinamide (en)
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| skos:prefLabel
| - Study of copper(II) thiophenecarboxylate complexes with nicotinamide
- Study of copper(II) thiophenecarboxylate complexes with nicotinamide (en)
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| skos:notation
| - RIV/00216275:25310/12:39895374!RIV13-MSM-25310___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/00216275:25310/12:39895374
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - thiophenecarboxylate; hydrogen bonds; crystal structure; nicotinamide; copper(II) (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Koman, Marian
- Padělková, Zdeňka
- Kalińska, Božena
- Kuchtanin, Vladimír
- Melník, Milan
- Moncoľ, Ján
- Mrozinski, Jerzy
- Polakovičová, Petra
- Segľa, Peter
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| http://linked.open...ain/vavai/riv/wos
| |
| issn
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| number of pages
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| http://bibframe.org/vocab/doi
| - 10.1016/j.poly.2012.07.069
|
| http://localhost/t...ganizacniJednotka
| |
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