Abstract
Dinuclear copper(II) complexes bridged by chloranilate (C1DHBQ2-) or bromanilate (BrDHBQ2-) dianions and end-capped with 2,2′-dipyridyl (bpy) or 1,10-phenathroline (phen), [Cu2(L)2(XDHBQ)]Y2 (L = bpy or phen; X = Cl or Br; Y = ClO4- or PF6-), were prepared as solvated (H2O or CH3OH) or unsolvated forms. The complex [Cu2(bpy)2(ClDHBQ)](PF6)2·2CH3OH has been characterized by X-ray crystallography. The crystal consists of a dinuclear cation {Cu2(bpy)2(ClDHBQ)(CH3OH)2}2+ and hexafluorophosphate ions. The two copper(II) ions are bridged by ClDHBQ2- with a Cu---Cu separation of 7.661 Å. The configuration about each copper atom is square pyramidal, with two oxygens of ClDHBQ2- and two nitrogens of bpy at the basal plane and the methanol oxygen at the apex. Magnetic studies of the complexes in the temperature range 4.2-300 K reveal a significant antiferromagnetic spin-exchange through the XDHBQ bridge. The exchange integrals are evaluated as - J = 11.7-16.3 cm-1 based on H = -2JŜ1Ŝ2.
| Original language | English |
|---|---|
| Pages (from-to) | 933-938 |
| Number of pages | 6 |
| Journal | Polyhedron |
| Volume | 13 |
| Issue number | 6-7 |
| DOIs | |
| Publication status | Published - Jan 1 1994 |
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All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry
Cite this
Structure and magnetic properties of new dinuclear copper(II) complexes bridges by chloranilate or bromanilate dianions. / Fujii, Chiho; Mitsumi, Minoru; Kodera, Masahito; Motoda, Ken Ichiro; Ohba, Masaaki; Matsumoto, Naohide; Okawa, Hisashi.
In: Polyhedron, Vol. 13, No. 6-7, 01.01.1994, p. 933-938.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Structure and magnetic properties of new dinuclear copper(II) complexes bridges by chloranilate or bromanilate dianions
AU - Fujii, Chiho
AU - Mitsumi, Minoru
AU - Kodera, Masahito
AU - Motoda, Ken Ichiro
AU - Ohba, Masaaki
AU - Matsumoto, Naohide
AU - Okawa, Hisashi
PY - 1994/1/1
Y1 - 1994/1/1
N2 - Dinuclear copper(II) complexes bridged by chloranilate (C1DHBQ2-) or bromanilate (BrDHBQ2-) dianions and end-capped with 2,2′-dipyridyl (bpy) or 1,10-phenathroline (phen), [Cu2(L)2(XDHBQ)]Y2 (L = bpy or phen; X = Cl or Br; Y = ClO4- or PF6-), were prepared as solvated (H2O or CH3OH) or unsolvated forms. The complex [Cu2(bpy)2(ClDHBQ)](PF6)2·2CH3OH has been characterized by X-ray crystallography. The crystal consists of a dinuclear cation {Cu2(bpy)2(ClDHBQ)(CH3OH)2}2+ and hexafluorophosphate ions. The two copper(II) ions are bridged by ClDHBQ2- with a Cu---Cu separation of 7.661 Å. The configuration about each copper atom is square pyramidal, with two oxygens of ClDHBQ2- and two nitrogens of bpy at the basal plane and the methanol oxygen at the apex. Magnetic studies of the complexes in the temperature range 4.2-300 K reveal a significant antiferromagnetic spin-exchange through the XDHBQ bridge. The exchange integrals are evaluated as - J = 11.7-16.3 cm-1 based on H = -2JŜ1Ŝ2.
AB - Dinuclear copper(II) complexes bridged by chloranilate (C1DHBQ2-) or bromanilate (BrDHBQ2-) dianions and end-capped with 2,2′-dipyridyl (bpy) or 1,10-phenathroline (phen), [Cu2(L)2(XDHBQ)]Y2 (L = bpy or phen; X = Cl or Br; Y = ClO4- or PF6-), were prepared as solvated (H2O or CH3OH) or unsolvated forms. The complex [Cu2(bpy)2(ClDHBQ)](PF6)2·2CH3OH has been characterized by X-ray crystallography. The crystal consists of a dinuclear cation {Cu2(bpy)2(ClDHBQ)(CH3OH)2}2+ and hexafluorophosphate ions. The two copper(II) ions are bridged by ClDHBQ2- with a Cu---Cu separation of 7.661 Å. The configuration about each copper atom is square pyramidal, with two oxygens of ClDHBQ2- and two nitrogens of bpy at the basal plane and the methanol oxygen at the apex. Magnetic studies of the complexes in the temperature range 4.2-300 K reveal a significant antiferromagnetic spin-exchange through the XDHBQ bridge. The exchange integrals are evaluated as - J = 11.7-16.3 cm-1 based on H = -2JŜ1Ŝ2.
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U2 - 10.1016/S0277-5387(00)83013-2
DO - 10.1016/S0277-5387(00)83013-2
M3 - Article
AN - SCOPUS:0001543514
VL - 13
SP - 933
EP - 938
JO - Polyhedron
JF - Polyhedron
SN - 0277-5387
IS - 6-7
ER -