443644-07-3Relevant academic research and scientific papers
Methyl group influence on the formation of CuI complexes with thio-pyridine ligands
Caradoc-Davies, Paula L.,Hanton, Lyall R.,Hodgkiss, Justin M.,Spicer, Mark D.
, p. 1581 - 1585 (2002)
In order to investigate the effect of methyl group substitution adjacent to a pyridyl N donor, three ligands were synthesised and complexed with CuI in a 1:2 ratio. The crystal structures of three CuI complexes were determined. The dimethylated ligand bis(6-methyl-2-pyridylmethyl)sulfide (L1) gave rise to a tetranuclear complex with two Cu2I2 bridges in which the Cu centres were four-coordinate. The asymmetric ligand 2-(6-methylpyridyl)methyl(2-pyridyl)methylsulfide (L2) gave a tetranuclear complex which contained two parallel Cu2I2 bridges. In each Cu2I2 bridge, one Cu centre was three- and the other four-coordinate. In contrast, the ligand bis(2-pyridylmethyl)sulfide (L3), with no Me substitution, gave rise to a one-dimensional coordination polymer with CuI chains. It was found that the differences in the complexes were a result of both the electronic and steric effects arising from the Me substitution of the pyridine donors and that no one effect completely dominated.
