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rdf:type
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Description
| - From the V2O5single bondH2O2single bondH2dipic–nica/pa/phen–H2O/H2Osingle bondCH3CN reaction systems (H2dipic = dipicolinic acid, nica = nicotinamide, pa = picolinamide, phen = 1,10-phenanthroline), three monoperoxidovanadium(V) complexes have been synthesized and structurally characterized: (Hpa)[VO(O2)(dipic)(H2O)].H2O (1), (Hnica)[VO(O2)(dipic)(H2O)] (2) and (Hphen)[VO(O2)(dipic)(H2O)].H2O (3). The organic counterions in 1–3 are protonated on the aromatic nitrogen atoms, whereas the dipicolinato(2-) (=dipic) ligand adopts a tridentate chelating coordination mode in all three complexes. The NOO donor atoms of dipic occupy the three equatorial positions of the characteristic distorted pentagonal bipyramid around the central vanadium atom. The aqua ligand is located in the apical position trans to the short Vtriple bond; length of mdashO(oxido) bond. In addition to electrostatic cation–anion interactions, the supramolecular architecture of the title complexes is formed by: (i) a network of Dsingle bondH...O (D = N, O and C) hydrogen bonds, (ii) π–π interactions between offset pyridine rings of dipic (in 1 and 2) as well as between the rings of Hpa+, Hnica+ or Hphen+, (iii) anion–π interactions (in 1 and 3) between the oxygen atoms of the COO group and rings of the dipic ligands, and (iv) the rarely recognized lone pair–π interaction between the carboxamide oxygen atoms of Hpa+ and pyridine rings in 1, as well as between the oxygen atoms from crystal water molecules and the pyridine rings of Hphen+ in 3. The anion–π and lone pair–π interactions were studied more in detail by DFT. A common feature for both these interactions was the lack of significant covalent contributions to the attraction between the respective partners.
- From the V2O5single bondH2O2single bondH2dipic–nica/pa/phen–H2O/H2Osingle bondCH3CN reaction systems (H2dipic = dipicolinic acid, nica = nicotinamide, pa = picolinamide, phen = 1,10-phenanthroline), three monoperoxidovanadium(V) complexes have been synthesized and structurally characterized: (Hpa)[VO(O2)(dipic)(H2O)].H2O (1), (Hnica)[VO(O2)(dipic)(H2O)] (2) and (Hphen)[VO(O2)(dipic)(H2O)].H2O (3). The organic counterions in 1–3 are protonated on the aromatic nitrogen atoms, whereas the dipicolinato(2-) (=dipic) ligand adopts a tridentate chelating coordination mode in all three complexes. The NOO donor atoms of dipic occupy the three equatorial positions of the characteristic distorted pentagonal bipyramid around the central vanadium atom. The aqua ligand is located in the apical position trans to the short Vtriple bond; length of mdashO(oxido) bond. In addition to electrostatic cation–anion interactions, the supramolecular architecture of the title complexes is formed by: (i) a network of Dsingle bondH...O (D = N, O and C) hydrogen bonds, (ii) π–π interactions between offset pyridine rings of dipic (in 1 and 2) as well as between the rings of Hpa+, Hnica+ or Hphen+, (iii) anion–π interactions (in 1 and 3) between the oxygen atoms of the COO group and rings of the dipic ligands, and (iv) the rarely recognized lone pair–π interaction between the carboxamide oxygen atoms of Hpa+ and pyridine rings in 1, as well as between the oxygen atoms from crystal water molecules and the pyridine rings of Hphen+ in 3. The anion–π and lone pair–π interactions were studied more in detail by DFT. A common feature for both these interactions was the lack of significant covalent contributions to the attraction between the respective partners. (en)
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Title
| - Anion–π, lone pair–π and π–π interactions in VO(O2)+ complexes with one dipicolinato(2-)-N,O,O ligand and bearing picolinamidium, nicotinamidium or phenanthrolinium as counterions
- Anion–π, lone pair–π and π–π interactions in VO(O2)+ complexes with one dipicolinato(2-)-N,O,O ligand and bearing picolinamidium, nicotinamidium or phenanthrolinium as counterions (en)
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skos:prefLabel
| - Anion–π, lone pair–π and π–π interactions in VO(O2)+ complexes with one dipicolinato(2-)-N,O,O ligand and bearing picolinamidium, nicotinamidium or phenanthrolinium as counterions
- Anion–π, lone pair–π and π–π interactions in VO(O2)+ complexes with one dipicolinato(2-)-N,O,O ligand and bearing picolinamidium, nicotinamidium or phenanthrolinium as counterions (en)
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skos:notation
| - RIV/61388955:_____/13:00391992!RIV14-AV0-61388955
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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/61388955:_____/13:00391992
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - Monoperoxidovanadium (V); Dipicolinato(2-) ligand; Anion–π (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Journal of Molecular Structure
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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...vavai/riv/projekt
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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
| - Gyepes, Robert
- Pacigová, S.
- Sivák, M.
- Tatiersky, J.
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http://linked.open...ain/vavai/riv/wos
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issn
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number of pages
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http://bibframe.org/vocab/doi
| - 10.1016/j.molstruc.2013.02.022
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