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Titolo:
Synthesis, characterization and magnetic studies of mu-oxamido copper(II)-chromium(III) heterodinuclear complexes
Autore:
Li, YT; Yan, CW; Hu, CX; Liao, DZ;
Indirizzi:
Qufu Normal Univ, Dept Chem, Shandong 273165, Peoples R China Qufu Normal Univ Shandong Peoples R China 273165 273165, Peoples R China Qufu Normal Univ, Dept Biol, Shandong 273165, Peoples R China Qufu Normal Univ Shandong Peoples R China 273165 273165, Peoples R China Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China Nankai Univ Tianjin Peoples R China 300071 anjin 300071, Peoples R China
Titolo Testata:
CHINESE JOURNAL OF CHEMISTRY
fascicolo: 3, volume: 19, anno: 2001,
pagine: 257 - 262
SICI:
1001-604X(200103)19:3<257:SCAMSO>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
EXCHANGE INTERACTION; BINUCLEAR COMPLEXES; CRYSTAL-STRUCTURE; CU(II)-NI(II) COMPLEXES; LIGANDS; N,N'-BIS(2-AMINOPROPYL)OXAMIDOCOPPER(II);
Keywords:
mu-oxamido-bridge; copper(II)-chromium(III); heterodinuclear complexes; magnetic properties; synthesis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Li, YT Qufu Normal Univ, Dept Chem, Shandong 273165, Peoples R China Qufu Normal Univ Shandong Peoples R China 273165 Peoples R China
Citazione:
Y.T. Li et al., "Synthesis, characterization and magnetic studies of mu-oxamido copper(II)-chromium(III) heterodinuclear complexes", CHIN J CHEM, 19(3), 2001, pp. 257-262

Abstract

Three new mu -oxamido bridged heterodinuclear copper(II)chromium(III) complexes formulated [Cu(Me(2)oxpn)Cr(L)(2)](NO3)(3), where Me(2)oxpn denotes N, N'-bis(3-amino-2, 2-dimethylpropyl)oxamido dianion and L represents 5-methyl-1, 10-phenanthroline (Mephen), 4, 7-diphenyl-1, 10-phenanthroline (Ph(2)phen) or 2,2'-bipyridine (bpy), have been synthesized and characterized byelemental analyses, IR and electronic spectral studies, magnetic moments of room-temperature and molar conductivity measurements. It is proposed thatthese complexes have oxamido-bridged structures consisting of planar copper(II) and octahedral chromium(III) ions. The variable temperature magnetic susceptibilities (4.2-300 Ii) of complexes [Cu(Me(2)oxpn)Cr(Ph(2)phen)(2)] (NO3)(3) (1) and [eu(Me(2)oxpn) Cr(Mephen)(2)](NO3)(3) (2) were further measured and studied, demonstrating the ferromagnetic interaction between the adjacent chromium(III) and copper(II) ions through the oxamido-bridge in both complexes 1 and 2. Based on the spin Hamiltonian, (H) over cap = - 2J (S) over cap (1) . (S) over cap (2), the exchange integrals J were evaluated as + 21.5 cm(-1) for 1 and + 22.8 cm(-1) for 2.

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Documento generato il 05/12/20 alle ore 02:07:10