A bis(chlorido)-bridged linear-chain Cu(II) compound with 7-azaindole as an axial ligand; synthesis, structure, hydrogen bonding and magnetism |
| |
| Authors: | Gerard A van Albada Ilpo Mutikainen Jan Reedijk |
| |
| Institution: | a Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
b Laboratory of Inorganic Chemistry, Department of Chemistry, P.O. Box 55 (A.I. Virtasenaukio 1), 00014 University of Helsinki, Finland |
| |
| Abstract: | A novel linear bis(chlorido)-bridged Cu(II) compound with the ligand 7-azaindole (abbreviated as Haza) have been synthesized and fully characterized by spectroscopy, EPR and X-ray structure analysis. The geometry around the Cu(II) ion in the compound Cu-μ-Cl2(Haza)2]n, is distorted octahedral with the basal plane formed by two chloride anions with a Cu-Cl distance of 2.286(1) Å and two nitrogen atoms of two trans-chelating Haza ligands with a Cu-N distance of 2.042(4) Å. The apical positions is formed by two chloride anions of a neighbouring unit at a distance of 3.143(2) Å. The Cu-Cl-Cu angle is 90.09(5)°, while the Cu-Cu distance is 3.8890(8) Å.The EPR powder spectrum appears as rhombic, displaying some extra features which were assigned to the differences in orientation of chains in the lattice, as their intensity appears to decrease on powdering. The magnetic susceptibility measurements, recorded from 5 to 300 K, agree with a very weak antiferromagnetic interaction in a chain with J = −2.6 cm−1. |
| |
| Keywords: | Copper Structure Magnetism EPR Polymeric Chlorido-bridged |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
