Square-planar copper(II) chelate complexes of the ONN,X type (X = monodentate ligand): kinetics of ligand substitution as studied in acetone and the effect of water

1989 ◽  
Vol 28 (12) ◽  
pp. 2323-2329 ◽  
Author(s):  
Juergen Roeper ◽  
Helmut Paulus ◽  
Horst Elias
1989 ◽  
Vol 149 ◽  
pp. 331-340 ◽  
Author(s):  
G.A. Katsoulos ◽  
M. Lalia-Kantouri ◽  
C.C. Hadjikostas ◽  
P. Kokorotsikos

1983 ◽  
Vol 2 (7) ◽  
pp. 834-840 ◽  
Author(s):  
Richard S. Herrick ◽  
D. Mark Leazer ◽  
Joseph L. Templeton

1987 ◽  
Vol 65 (7) ◽  
pp. 1485-1490 ◽  
Author(s):  
M. N. Bakola-Christianopoulou ◽  
P. D. Akrivos ◽  
M. Baumgarten

Homobinuclear metal chelate complexes having 1,4-dihydroxy-9,10-anthracenedione (quinizarin) as a bridging unit have been prepared with four bivalent first row transition elements, namely cobalt, nickel, copper, and zinc. The coordination spheres of the metal ions consist of two nearly equivalent six-membered rings with oxygen donor atoms derived from the quinizarin and the terminal ligands which are either β-diketones or salicylic aldehyde. TG, spectroscopic (ir, uv–vis, epr), and magnetic measurements have been applied to an investigation of the geometry adopted by the MO4 chromophores. The results are consistent with varying degrees of distortion from the ideal square planar toward a tetrahedral arrangement around the metal ions, closely related to the specific metal center involved.


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