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2001 (1)
1Author    SaharI. Mostafa3, SpyrosP. Perlepesb, Nick HadjiliadiscRequires cookie*
 Title    New Dinuclear Transition Metal Complexes with the [M2(//-dhbq)]n+ Core and 2-(2'-Pyridyl)quinoxaline (L) as a Terminal Ligand: Preparation and Characterization (dhbq2-= the Dianion of 2,5-Dihydroxy -1,4  
 Abstract    2,5-Dihydroxy-l,4-benzoquinonate(-2) Complexes, Dinuclear Complexes, 2-(2'-Pyridyl)quinoxaline Complexes Synthetic procedures are described that allow access to the new complexes [Mn2(dhbq)L2(H20) 4 (1), [F e^dM xO M ^O ^K N C ^V öIL O (2), [Co2(dhbq)Cl2L2(H20) 2] (3), [Ni2(dhbq)Cl2L2(H20) 2] (4), [Cu2(dhbq)Cl2L2(H20) 2] (5), [Ru2(dhbq)L2(H20)4](C104)2 (6), [Rh2(dhbq)Cl2L2(H20) 2]Cl2-2H20 (7), [Pd2(dhbq)L2]Cl2-5H20 (8) and [A g^dhbq)^] (9), where dhbq2-is the dianion of 2,5-dihydroxy-1,4-benzoquinone and L is the biheteroar-omatic 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 bis-chelating dhbq2-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. 
  Reference    Z. Naturforsch. 56b, 394—402 (2001); received December 28 2000 
  Published    2001 
  Keywords    benzoquinone, M = Ag1, Mn11, Co11, Ni", Cu11, Ru11, Pd11, Fem, Rhm, n = 0, 2, 4) 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0394.pdf 
 Identifier    ZNB-2001-56b-0394 
 Volume    56