TY - JOUR
T1 - A new one-dimensional coordination polymer and a new supramolecular dimer made of trinuclear copper(II) complexes
T2 - Crystal structure and magnetic properties
AU - Gao, E. Q.
AU - Zhao, Q. H.
AU - Tang, J. K.
AU - Liao, D. Z.
AU - Jiang, Z. H.
AU - Yan, S. P.
PY - 2001
Y1 - 2001
N2 - Two oxamato-bridged copper(II) complexes of formula [Cu3(pbaOH)(tmen)2(H2O)(ClO4)] n[ClO4]n·nH2O 1 and [Cu3(opba)(tmen)2(H2O)3][Cu 3(opba)(tmen)2(H2O)2][ClO 4]4·3H2O 2 have been synthesized and characterized by IR, ESR, electronic spectra and X-ray crystallographic analyses, where pbaOH4- = 2-hydroxyl-N,N′-trimethylenebis-(oxamate), opba4- = N,N′-o-phenylenebis(oxamate), tmen = N,N,N′,N′-tetramethylethylenediamine. Both complexes consist of cationic trinuclear entities, in which copper atoms reside in square-planar (4) or square-pyramidal (4+1) environments. In complex 1 the hydroxyl group of one trinuclear entity coordinates to a terminal copper atom of another, thus forming an unusual one-dimensional chain. In 2 two neighboring trinuclear cations interact to form an interesting supramolecular (or "supracationic") dimer. The magnetic properties of the two complexes have been investigated, indicating that two copper(II) ions bridged by the oxamato bridge interact antiferromagnetically with J = -334.4 cm-1 for 1 and -356.6 cm-1 for 2 (based on Ĥ = -JŜ1·Ŝ2).
AB - Two oxamato-bridged copper(II) complexes of formula [Cu3(pbaOH)(tmen)2(H2O)(ClO4)] n[ClO4]n·nH2O 1 and [Cu3(opba)(tmen)2(H2O)3][Cu 3(opba)(tmen)2(H2O)2][ClO 4]4·3H2O 2 have been synthesized and characterized by IR, ESR, electronic spectra and X-ray crystallographic analyses, where pbaOH4- = 2-hydroxyl-N,N′-trimethylenebis-(oxamate), opba4- = N,N′-o-phenylenebis(oxamate), tmen = N,N,N′,N′-tetramethylethylenediamine. Both complexes consist of cationic trinuclear entities, in which copper atoms reside in square-planar (4) or square-pyramidal (4+1) environments. In complex 1 the hydroxyl group of one trinuclear entity coordinates to a terminal copper atom of another, thus forming an unusual one-dimensional chain. In 2 two neighboring trinuclear cations interact to form an interesting supramolecular (or "supracationic") dimer. The magnetic properties of the two complexes have been investigated, indicating that two copper(II) ions bridged by the oxamato bridge interact antiferromagnetically with J = -334.4 cm-1 for 1 and -356.6 cm-1 for 2 (based on Ĥ = -JŜ1·Ŝ2).
UR - https://www.scopus.com/pages/publications/0034742909
U2 - 10.1039/b100142f
DO - 10.1039/b100142f
M3 - 文章
AN - SCOPUS:0034742909
SN - 1470-479X
SP - 1537
EP - 1540
JO - Journal of the Chemical Society. Dalton Transactions
JF - Journal of the Chemical Society. Dalton Transactions
IS - 9
ER -