Effect of Bridge Geometry on Exchange Coupling in Ligand-Bridged Copper(II) Dimers and Chains
- 1 June 1981
- journal article
- research article
- Published by Taylor & Francis in Comments on Inorganic Chemistry
- Vol. 1 (2) , 105-121
- https://doi.org/10.1080/02603598108078084
Abstract
The singlet triplet splitting resulting from exchange coupling in three series of ligand-bridged copper(II) complexes is primarily controlled by the angle at the bridging ligand atom and by the length of the superexchange pathway. Magnetic and structural data exist for chloro-, bromo-, and sulfur-bridged complexes. The smooth correlation between the exchange coupling constant J and the quotient of structural parameters φr 0 (where φ is the angle at the bridging ligand atom and r 0, is the long out-of-plane bond distance) may be explained in terms of extended Hückel molecular-orbital theory, but the theory does not permit an explanation why only complexes which obey the simple correlation exist. It is predicted that a family of such structurally and magnetically related complexes should exist.Keywords
This publication has 65 references indexed in Scilit:
- Exchange coupling in the sulfur-bridged quasi-linear-chain compound bis(dimethyldithiocarbamato)copper(II). Observations on exchange in sulfur-bridged copper(II) compoundsInorganic Chemistry, 1980
- Preparation of Cu(tmen)OH(Cl) and molecular structure of di-μ-hydroxo-bis(N,N,N′,N′-tetramethylethylenediamine)-dicopper(II) perchlorate, [Cu(tmen)OH]2(ClO4)2Journal of Inorganic and Nuclear Chemistry, 1977
- Relation between the singlet-triplet splitting and the copper-oxygen-copper bridge angle in hydroxo-bridged copper dimersInorganic Chemistry, 1976
- The crystal structure of the antitumor agent 3-ethoxy-2-oxobutyraldehyde bis(thiosemicarbazonato) copper(II)Bioinorganic Chemistry, 1974
- Crystal and molecular structure of .alpha.-di-.mu.-hydroxo-bis[2-(2-dimethylaminoethyl)pyridine]dicopper(II) perchlorateInorganic Chemistry, 1974
- Crystal and molecular structure of dibromo(2-(2-aminoethyl)pyridine)copper(II)Inorganic Chemistry, 1972
- Metal Complexes with Mixed Ligands. 5. The Crystal Structure of Diimidazole-copper(II) Dichloride, Cu(C3H4N2)2Cl2.Acta Chemica Scandinavica, 1972
- The novel magnetism and crystal structure of the complex di-µ-hydroxybis(bipyridyl)dicopper(II) sulphate pentahydrateJournal of the Chemical Society D: Chemical Communications, 1970
- The magnetic properties to 4·2K of the complex di-µ-hydroxybis(bipyridyl)dicopper(II) sulphate pentahydrateJournal of the Chemical Society D: Chemical Communications, 1970
- Reactions of some N,N,N′,N′-tetraalkyl-substituted diamines with concentrated aqueous solutions of copper(II) saltsJournal of Inorganic and Nuclear Chemistry, 1968