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Titolo:
New dinuclear transition metal complexes with the [M-2(mu-dhbq)](n+) core and 2-(2 '-pyridyl)quinoxaline (L) as a terminal ligand: Preparation and characterization (dhbq(2-) = the dianion of 2,5-dihydroxy-1,4-benzoquinone; M= Ag-I, Mn-II, Co-II, Ni-II, Cu-II, Ru-II, Pd-II, Fe-III, Rh-III; n = 0, 2, 4)
Autore:
Mostafa, SI; Perlepes, SP; Hadjiliadis, N;
Indirizzi:
Univ Ioannina, Dept Chem, Lab Inorgan & Gen Chem, GR-45110 Ioannina, Greece Univ Ioannina Ioannina Greece GR-45110 n Chem, GR-45110 Ioannina, Greece Univ Patras, Dept Chem, Patras 26500, Greece Univ Patras Patras Greece 26500 Patras, Dept Chem, Patras 26500, Greece Mansoura Univ, Fac Sci, Dept Chem, Mansoura, Egypt Mansoura Univ Mansoura Egypt Univ, Fac Sci, Dept Chem, Mansoura, Egypt
Titolo Testata:
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES
fascicolo: 4-5, volume: 56, anno: 2001,
pagine: 394 - 402
SICI:
0932-0776(200104/05)56:4-5<394:NDTMCW>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIC-PROPERTIES; CRYSTAL-STRUCTURE; COORDINATION POLYMERS; CHLORANILIC ACID; BRIDGING LIGANDS; COPPER(II) COMPLEXES; 2,2'-BIPYRIDINE; PALLADIUM(II); SYSTEM; SPECTROSCOPY;
Keywords:
2,5-dihydroxy-1,4-benzoquinonate(-2) complexes; dinuclear complexes; 2-(2 '-pyridyl)quinoxaline complexes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
82
Recensione:
Indirizzi per estratti:
Indirizzo: Hadjiliadis, N Univ Ioannina, Dept Chem, Lab Inorgan & Gen Chem, GR-45110 Ioannina, Greece Univ Ioannina Ioannina Greece GR-45110 0 Ioannina, Greece
Citazione:
S.I. Mostafa et al., "New dinuclear transition metal complexes with the [M-2(mu-dhbq)](n+) core and 2-(2 '-pyridyl)quinoxaline (L) as a terminal ligand: Preparation and characterization (dhbq(2-) = the dianion of 2,5-dihydroxy-1,4-benzoquinone; M= Ag-I, Mn-II, Co-II, Ni-II, Cu-II, Ru-II, Pd-II, Fe-III, Rh-III; n = 0, 2, 4)", Z NATURFO B, 56(4-5), 2001, pp. 394-402

Abstract

Synthetic procedures are described that allow access to the new complexes [Mn-2(dhbq)L-2(H2O)(4) (1). [Fe-2(dhbq)L-2(H(2)o)(4)](NO3)(4). 6H(2)O (2). [Co-2(dhbq)Cl2L2(H2O)(2)] (3). [Ni-2(dhbq)Cl2L2(H2O)(2)] (4). [Cu-2(dhbq)Cl2L2(H2O)(2)] (5). [Ru-2(dhbq)L-2(H2O)(4)](ClO4)(2) (6). [Rh-2(dhbq)Cl2L2(H2O)(2)]Cl-2. 2H(2)O (7), [Pd-2(dhbq)L-2]Cl-2. 5H(2)O (8) and [Ag-2(dhbq)L-2](9). where dhbq(2-) is the dianion of 2,5-dihydroxy-1,4-benzoquinone and Lis the biheteroaromatic ligand 2-(2 ' -pyridyl)quinoxaline. The new complexes were characterized by elemental analyses and by a variety of physical and spectroscopic techniques. Dinuclear structures are assigned for the complexes in the solid state. The two metal ions are bridged by the bischelating dhbq(2-) ion, while L behaves as a bidentate chelate with the 2 ' -pyridyl nitrogen and the nearest quinoxaline nitrogen atom as the ligand atoms. The metal ion coordination geometries are octahedral, tetrahedral or square planar.

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Documento generato il 26/10/20 alle ore 03:38:53