Preparation, crystal structure and solution studies of [Mn2L2Cl4(H2O)(2)], where L=2-(2 '-pyridyl)quinoxaline

This item is provided by the institution :
University of Ioannina
Repository :
Repository of UOI Olympias
see the original item page
in the repository's web site and access all digital files if the item*

1999 (EN)
Preparation, crystal structure and solution studies of [Mn2L2Cl4(H2O)(2)], where L=2-(2 '-pyridyl)quinoxaline (EN)

Garoufis, A. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)
Garoufis, A. (EN)

The reaction of MnCl2.4H(2)O with the biheteroaromatic ligand (L), formed the dinuclear complex bis[aquachloro-2-(2'-pyridyl)quinoxaline]di-mu-chloro dimanganese {[Mn2L2Cl4(H2O)(2)]}, which was studied in the solid state by thermal techniques [thermogravimetry (TG), differential thermogravimetry (DTG) and differential thermal analysis (DTA)], spectroscopy (IR, far-IR, electronic spectra), magnetic susceptibility, X-ray diffraction methods as well as in methanolic solution by electrospray mass spectrometry (ES-MS). The X-ray crystal structure showed two manganese(II) ions bridged by two chloro ligands with a terminal chloride, a water molecule and a chelating molecule of L, completing a six-coordinate octahedral geometry around each metal centre. The complex in methanolic solution decomposes, forming various monomeric species, as observed from both conductivity measurements and ES-MS. Anions of the general formula [(MnCl2)Cl](n)(-), where n=1, 2, 3, 4 and 5, were also observed in the negative ES mode. (C) 1999 Elsevier Science Ltd. All rights reserved. (EN)

crystal structure (EN)

Πανεπιστήμιο Ιωαννίνων (EL)
University of Ioannina (EN)

Polyhedron (EN)



<Go to ISI>://000080917600012

*Institutions are responsible for keeping their URLs functional (digital file, item page in repository site)