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| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Nikolakis, V. A. | en |
| dc.contributor.author | Stathopoulos, P. | en |
| dc.contributor.author | Exarchou, V. | en |
| dc.contributor.author | Gallos, J. K. | en |
| dc.contributor.author | Kubicki, M. | en |
| dc.contributor.author | Kabanos, T. A. | en |
| dc.date.accessioned | 2015-11-24T16:51:57Z | - |
| dc.date.available | 2015-11-24T16:51:57Z | - |
| dc.identifier.issn | 0020-1669 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/9808 | - |
| dc.rights | Default Licence | - |
| dc.subject | vanadium-dependent haloperoxidases | en |
| dc.subject | density-functional theory | en |
| dc.subject | solid-state | en |
| dc.subject | electron-transfer | en |
| dc.subject | v-51 nmr | en |
| dc.subject | spectroscopic characterization | en |
| dc.subject | structural-characterization | en |
| dc.subject | pot conversion | en |
| dc.subject | active-site | en |
| dc.subject | acetic-acid | en |
| dc.title | Unexpected Synthesis of an Unsymmetrical mu-Oxido Divanadium(V) Compound through a Reductive Cleavage of a N-O Bond and Cleavage-Hydrolysis of a C-N Bond of an N,N-Disubstituted Bis-(hydroxylamino) Ligand | en |
| heal.type | journalArticle | - |
| heal.type.en | Journal article | en |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.identifier.primary | Doi 10.1021/Ic901809f | - |
| heal.identifier.secondary | <Go to ISI>://000272935800009 | - |
| heal.identifier.secondary | http://pubs.acs.org/doi/pdfplus/10.1021/ic901809f | - |
| heal.language | en | - |
| heal.access | campus | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.publicationDate | 2010 | - |
| heal.abstract | Reaction of the N,N-disubstituted bis-(hydroxylamino) ligand 2,6-bis [hydroxy(methyl)amino]-4-morpholino-1,3,5-triazine, H(2)bihyat, with V(IV)OSO(4)center dot 5H(2)O in water for 6 h followed by the addition of methyl alcohol resulted in the isolation of the unsymmetrical mu-oxido divanadium(V) compound [V(2)(V)O(2)(mu(2)-O)(bihyat)(hyta)(hyto)]center dot 3H(2)O (1 center dot 3H(2)O) and of the methylhydroxylamido derivative [V(V)O(bihyat)(CH(3)NHO)]center dot H(2)O (2 center dot H(2)O). The N,N-disubstituted mono(hydroxylamino) ligands Hhyta, Hhyto, and CH(3)NHOH were formed by the decomposition of the ligand H(2)bihyat in the presence of vanadium. The structures of compounds 1 center dot 3H(2)O and 2 center dot H(2)O were determined by X-ray crystallography. The structure of 1 center dot 3H(2)O consists of one five-coordinate vanadium(V) atom and one six-coordinate vanadium(V) atom bridged by an oxido group and ligated to a tridentate bihyat(2-) and two bidentate hyta(-) and hyto(-) ligands, respectively. The two terminal oxido groups in 1 center dot 3H(2)O are syn-directed, lying on the same side of the V-O-V plane. The coordination environment of the vanadium atom in 2 center dot H(2)O approximates to a highly distorted pentagonal pyramid with the oxido ligand occupying the apical position. Compounds 1 center dot 3H(2)O and 2 center dot H(2)O were studied by multinuclear NMR ((1)H, (13)C, and (51)V) to elucidate their solution structures. The (51)V NMR of 1 center dot 3H(2)O in anhydrous CD(2)Cl(2) gave two signals at -199 and -508 ppm, which were assigned to the five- and six-coordinate vanadium(V) atoms, respectively. The resonance of the five-coordinate vanadium nucleus, in a field much lower than that expected from Rehder's [Inorg. Chem., 1988, 27, 584-587] referencing scale, was attributed to the low-energy ligand-to-metal charge transfer transition at 605 nm [epsilon(M)=5050 M(-1) cm(-1)] of 1 center dot 3H(2)O according to Pecoraro et al. [J. Am. Chem. Soc., 1992, 114, 9925-9933], Electrospray ionization-mass spectrometry studies were used to follow the decomposition products of H(2)bihyat in the presence of vanadium. | en |
| heal.publisher | American Chemical Society | en |
| heal.journalName | Inorg Chem | en |
| heal.journalType | peer reviewed | - |
| heal.fullTextAvailability | TRUE | - |
| Appears in Collections: | Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά). ΧΗΜ | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Nikolakis-2010-Unexpected Synthesis.pdf | 1.02 MB | Adobe PDF | View/Open Request a copy |
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