Buchholz, A. ; Nica, S. ; Debel, R. ; Fenn, A. ; Breitzke, H. ; Buntkowsky, G. ; Plass, W. (2014)
Vanadium complexes with side chain functionalized N-salicylidene hydrazides: Hydrogen-bonding relays as structural directive for supramolecular interactions.
In: Inorganica Chimica Acta, 420
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The synthesis and spectroscopic characterization of dioxidovanadium(V) complexes with hydrazone Schiff-base ligands derived from salicylaldehyde and x-hydroxy functionalized carbonic acid hydrazides with three different chain lengths are reported. This includes three series, the ammonium and potassium salts of the complex anions with the twofold deprotonated ligand systems as well as the corresponding neutral complexes VO2(HL). For four complexes within these series crystal structures are reported, namely the full series of complexes with the ligand system containing the shortest chain length (i.e. ammonium salt, potassium salt, and neutral complex) and the ammonium salt with the ligand based on the longest side chain. All complexes posses a dioxidovanadium group with a five-coordinated vanadium atom in a distorted square pyramidal geometry. Within the series of ammonium salts an extensive hydrogen-bonding network including the side chain hydroxyl end group is observed which is virtually independent of the side chain length. Whereas the structure of the potassium salt is governed by ionic contacts resulting in a bilayered packing arrangement with intercalated potassium ions. In the case of the neutral complex a two-dimensional hydrogen-bonding network is observed. Magic angle spinning solid-state V-51 NMR is used to characterize all three series of complexes. The variation of the chemical shift anisotropy parameters is found to be strongly dependent on differences in the supramolecular structure of the compounds, such as hydrogen bonding or crystal packing, which are caused by variation of the protonation state, counterion, and side chain length. (C) 2014 Elsevier B.V. All rights reserved.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Buchholz, A. ; Nica, S. ; Debel, R. ; Fenn, A. ; Breitzke, H. ; Buntkowsky, G. ; Plass, W. |
| Art des Eintrags: | Bibliographie |
| Titel: | Vanadium complexes with side chain functionalized N-salicylidene hydrazides: Hydrogen-bonding relays as structural directive for supramolecular interactions |
| Sprache: | Englisch |
| Publikationsjahr: | 2014 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Inorganica Chimica Acta |
| Jahrgang/Volume einer Zeitschrift: | 420 |
| URL / URN: | http://apps.webofknowledge.com/Search.do?product=WOS&SID=F6w... |
| Kurzbeschreibung (Abstract): | The synthesis and spectroscopic characterization of dioxidovanadium(V) complexes with hydrazone Schiff-base ligands derived from salicylaldehyde and x-hydroxy functionalized carbonic acid hydrazides with three different chain lengths are reported. This includes three series, the ammonium and potassium salts of the complex anions with the twofold deprotonated ligand systems as well as the corresponding neutral complexes VO2(HL). For four complexes within these series crystal structures are reported, namely the full series of complexes with the ligand system containing the shortest chain length (i.e. ammonium salt, potassium salt, and neutral complex) and the ammonium salt with the ligand based on the longest side chain. All complexes posses a dioxidovanadium group with a five-coordinated vanadium atom in a distorted square pyramidal geometry. Within the series of ammonium salts an extensive hydrogen-bonding network including the side chain hydroxyl end group is observed which is virtually independent of the side chain length. Whereas the structure of the potassium salt is governed by ionic contacts resulting in a bilayered packing arrangement with intercalated potassium ions. In the case of the neutral complex a two-dimensional hydrogen-bonding network is observed. Magic angle spinning solid-state V-51 NMR is used to characterize all three series of complexes. The variation of the chemical shift anisotropy parameters is found to be strongly dependent on differences in the supramolecular structure of the compounds, such as hydrogen bonding or crystal packing, which are caused by variation of the protonation state, counterion, and side chain length. (C) 2014 Elsevier B.V. All rights reserved. |
| Freie Schlagworte: | vanadium hydrogen bonds schiff-base ligands solid-state nmr solid-state nmr nuclear-magnetic-resonance schiff-base ligand dioxovanadium(v) complexes oxovanadium(v) complexes electronic-structure quadrupolar nuclei active-site haloperoxidases v-51 |
| Zusätzliche Informationen: | Ak3wo Times Cited:0 Cited References Count:61 |
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Eduard Zintl-Institut > Fachgebiet Physikalische Chemie |
| Hinterlegungsdatum: | 27 Okt 2014 20:36 |
| Letzte Änderung: | 28 Mai 2019 09:21 |
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