bis(imino)pyridyl ligands;
zinc complexes;
crystal structure;
blue luminescence;
D O I:
10.1016/j.synthmet.2004.12.016
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Two new Zn(II) complexes of, 2,6-bis[1-(2,6-diisopropylphenylimino)ethyl]pyridine (L-1), 2,6-bis[1-(2,6-dimethylphenylimino)ethyl]pyridine (L-2) were synthesized. These two complexes have the formulas Zn(L-1)Cl-2 (1) and Zn(L-2)(Cl2CH3CN)-C-. (2), respectively. Crystal structures of complexes 1 and 2 were determined by single-crystal X-ray diffraction. Crystallographic studies on I and 2 reveal both complexes to be five-coordinate with geometries that can be best described as distorted trigonal bipyramidal. Complexes 1 and 2 have blue luminescence at room temperature in solution and the solid state. The blue luminescence of the complexes is due to pi* -> pi* Tr transition centered on the ligands. The Zn(II) centers play a key role in enhancing fluorescent emission of the ligands. (c) 2005 Elsevier B.V. All rights reserved.