Cascade complexation: a single cyano bridge links a pair of Cu(II) cations

被引:23
作者
Bond, AD
Derossi, SA
Harding, CJ
McInnes, EJL
McKee, V
McKenzie, CJ
Nelson, J
Wolowska, J
机构
[1] Univ So Denmark, Dept Chem, DK-5230 Odense, Denmark
[2] Open Univ, Dept Chem, Milton Keynes MK7 6AA, Bucks, England
[3] Univ Manchester, EPSRC Natl EPR Serv, Manchester M13 9PL, Lancs, England
[4] Loughborough Univ Technol, Dept Chem, Loughborough LE11 3TU, Leics, England
[5] Univ Ulster, Coleraine BT52 1SA, Londonderry, North Ireland
关键词
D O I
10.1039/b504916d
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A series of structurally characterised mu-cyanodicopper(II) cryptates shows moderately strong antiferromagnetic interaction in the range -2J = 150-200 cm(-1), at the high end of the observed range for such assemblies. The lowest magnetic exchange coupling parameter is displayed where there is slight bending of the M-CN-M assembly, enforced by the constraints of cryptate encapsulation. Thermally accessible triplet EPR spectra are observed with zero-field splittings of the order of 0.13-0.14 cm(-1), confirming collinear ground-state d(z)(2) orbitals for Cu(II), consistent with their trigonal-bipyramidal coordination geometries.
引用
收藏
页码:2403 / 2409
页数:7
相关论文
共 25 条
[11]  
HARDING CJ, UNPUB
[12]   DICOPPER CRYPTATES WITH 1,1 AND 1,3 BRIDGING LIGANDS - SPECTROSCOPIC, MAGNETIC AND ELECTROCHEMICAL PROPERTIES [J].
LU, Q ;
LATOUR, JM ;
HARDING, CJ ;
MARTIN, N ;
MARRS, DJ ;
MCKEE, V ;
NELSON, J .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1994, (09) :1471-1478
[13]  
LU Q, 1993, J CHEM SOC CHEM COMM, P1798
[14]   C-C bond cleavage of acetonitrile by a dinuclear copper(II) cryptate [J].
Lu, TB ;
Zhuang, XM ;
Li, YW ;
Chen, S .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (15) :4760-4761
[15]   Ground-state, mode-dependent vibronic coupling in some simple, cyanide-bridged transition-metal donor-acceptor complexes [J].
Macatangay, AV ;
Mazzetto, SE ;
Endicott, JF .
INORGANIC CHEMISTRY, 1999, 38 (22) :5091-5101
[16]   Multi-frequency single-crystal and powder electron paramagnetic resonance spectroscopy of [Cu-2(chp)(4)] (chp equals 6-chloro-2-pyridonate) [J].
McInnes, EJL ;
Mabbs, FE ;
Grant, CM ;
Milne, PEY ;
Winpenny, REP .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1996, 92 (21) :4251-4256
[17]   Caged oxoanions [J].
McKee, V ;
Nelson, J ;
Town, RM .
CHEMICAL SOCIETY REVIEWS, 2003, 32 (05) :309-325
[18]   Coordination chemistry of azacryptands [J].
Nelson, J ;
McKee, V ;
Morgan, G .
PROGRESS IN INORGANIC CHEMISTRY, VOL 47, 1998, 47 :167-316
[19]   Cyano bridged dinuclear Cu(II) complexes [J].
Parker, RJ ;
Spiccia, L ;
Moubaraki, B ;
Murray, KS ;
Skelton, BW ;
White, AH .
INORGANICA CHIMICA ACTA, 2000, 300 (300-302) :922-931
[20]   Exchange coupling in cyano-bridged homodinuclear Cu(II) and Ni(II) complexes:: Synthesis, structure, magnetism, and density functional theoretical study [J].
Rodríguez-Fortea, A ;
Alemany, P ;
Alvarez, S ;
Ruiz, E ;
Scuiller, A ;
Decroix, C ;
Marvaud, V ;
Vaissermann, J ;
Verdaguer, M ;
Rosenman, I ;
Julve, M .
INORGANIC CHEMISTRY, 2001, 40 (23) :5868-5877