Reaction of the Biheteroaromatic Ligand 2-(2'-Pyridyl)Quinoxaline (L) with Zinc(Ii) and Cadmium(Ii) Halides - Preparation and Characterization of the 1/1 Complexes
| dc.contributor.author | Perlepes, S. P. | en |
| dc.contributor.author | Kasselouri, S. | en |
| dc.contributor.author | Garoufis, A. | en |
| dc.contributor.author | Lutz, F. | en |
| dc.contributor.author | Bau, R. | en |
| dc.contributor.author | Hadjiliadis, N. | en |
| dc.date.accessioned | 2015-11-24T16:46:04Z | |
| dc.date.available | 2015-11-24T16:46:04Z | |
| dc.identifier.issn | 0277-5387 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/9025 | |
| dc.rights | Default Licence | - |
| dc.subject | crystal-structure | en |
| dc.subject | metal-complexes | en |
| dc.subject | coordination-compounds | en |
| dc.subject | molecular-structures | en |
| dc.subject | spectra | en |
| dc.subject | copper(i) | en |
| dc.subject | chemistry | en |
| dc.title | Reaction of the Biheteroaromatic Ligand 2-(2'-Pyridyl)Quinoxaline (L) with Zinc(Ii) and Cadmium(Ii) Halides - Preparation and Characterization of the 1/1 Complexes | en |
| heal.abstract | The reactions of ZnX(2) and CdX(2) (X = Cl, Br, I) with the biheteroaromatic ligand 2-(2'-pyridyl)quinoxaline (L) were studied in ethanolic solutions. The new complexes [ZnX(2)L] (X = Cl, Br, I), [CdI(2)L] and [Cd(2)X(4)L(2)] were isolated and characterized by elemental analyses, conductivity measurements, X-ray powder patterns, thermal methods (TG/DTG, DTA) and spectroscopic (IR, far-IR, Raman, H-1 NMR) studies. The X-ray crystal structure of [ZnCl(2)L] . 0.5MeOH shows a distorted tetrahedral geometry around the zinc(II) atom. The ligand L acts as a bidentate chelate with the ligated atoms being the pyridine nitrogen and one of the quinoxaline nitrogens. A monomeric pseudo-tetrahedral structure is also assigned for [ZnBr2] and [MI(2)L] (M = Zn, Cd). Dimeric structures are proposed for the chloro and bromo cadmium(II) compounds, in which the two metal centres are bridged by two halo ligands, with a terminal halide and a chelating molecule of L completing five-coordination at each metal. All data are discussed in terms of the nature of bonding and known and assigned structures. A complex with the empirical formula Cd(2)Cl(4)L was isolated during the thermal decomposition of [Cd(2)Cl(4)L(2)]; the vibrational study of this thermally stable intermediate shows that L acts as a tridentate bridging ligand. The crystal structure of [Hg(2)Br(4)L(2)], which was not available when the results of the HgX(2)/L chemistry had been published, is also described. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://A1995RB57400009 | - |
| heal.identifier.secondary | http://ac.els-cdn.com/0277538794004128/1-s2.0-0277538794004128-main.pdf?_tid=c73763ffe377d6f3a51622634f23f16d&acdnat=1333029327_ccf4dfccc2b613b2de62257e8fca2d3f | - |
| heal.journalName | Polyhedron | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 1995 | - |
| heal.publisher | Elsevier | en |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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