309956-93-2Relevant academic research and scientific papers
CH/π interaction in nickel(n) complexes derived from 2-substituted benzothiazolines
Kavvamoto, Tatsuya,Kushi, Yoshihiko
, p. 3022 - 3026 (2000)
By reaction of 2-(3,5-di-/e/7-butyl-4-hydoxyphenyl)benzothiazoline with nickel(n) acetate tetrahydrate, the complex bis[2-(3,5-di-/er/-butyl-4-hydroxyphenylmethyleneatnino)benzenethiolato] nickel(ii) 1 has been prepared. Its crystal structure has been elucidated, showing an intramolecular approach of the tert-buly group to the aromatic ring of the 2-aminobenzenethiol moiety. In addition, variable-temperature 'H NMR studies of 1 indicated the restriction of rotation of the pendant arm. Such behaviour is attributed to the existence of a CH/jt interaction between the tenbutyl group and the aromatic ring of another ligand. To provide further evidence for the CH/it interaction in nickel(il) complexes derived from 2-substituted benzothiazolines, we have also prepared a pair of nickel(n) complexes (2 and 3) with eta-substituted phenyl groups as pendant arms. A comparison between 2 with a methyl group and 3 with a chlorine atom on the pendant arm provided insight into the CH/Jt interaction that controls the orientation of the pendant arm. The Royal Society of Chemistry 2000.
