Synthesis and characterization of (μ-oxalato) copper(II) and nickel(II) complexes

Four new binuclear complexes of the type [(u(L) x ) 2ox](ClO 4) 2 (L = 1,3-diaminopropane (1,3-pn), x = 1.5 ( 1) ; L = 1,3- diaminopropane, x = 1 ( 2)l; L = N-(2- aminoethyl)-1,3- propanediamine ( ept) , x = 1 ( 3)) or [(Ni(L) 2) 2ox](ClO 4) 2 ( L = 1,2- diaminopropane (1,2- pn) ( 4) ) have been pre...

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Bibliographic Details
Published in:Polyhedron 1998, Vol.17 (10), p.1631-1635
Main Authors: Smékal, Zdeněk, Thornton, Peter, Šindelář, Zdeněk, Klička, Roman
Format: Article
Language:English
Subjects:
antiferromagnetism
copper(II) complexes
magnetic properties
nickel(II) complex
μ-oxalato complexes
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Summary:Four new binuclear complexes of the type [(u(L) x ) 2ox](ClO 4) 2 (L = 1,3-diaminopropane (1,3-pn), x = 1.5 ( 1) ; L = 1,3- diaminopropane, x = 1 ( 2)l; L = N-(2- aminoethyl)-1,3- propanediamine ( ept) , x = 1 ( 3)) or [(Ni(L) 2) 2ox](ClO 4) 2 ( L = 1,2- diaminopropane (1,2- pn) ( 4) ) have been prepared and studied by elemental analysis, IR and electronic spectroscopies. Spectroscopic data are consistent with oxalate-bridged structures between five-coordinate (N 3O 2) Cu(II) (compounds 1 and 3), four coordinate (N 2O 2) Cu(II) ( 2) and six-coordinate (N 4O 2) Ni(II) ( 4). Magnetochemical measurements (72–300 K) show ( 2) and ( 4) are antiferromagnetic ( J = −254 and −33 cm −1 respectively ( H = − JS 1 S 2)).
ISSN:0277-5387
DOI:10.1016/S0277-5387(97)00456-7