Coordination studies of 5,6-diphenyl-3-(2-pyridyl)-1,2,4-triazine towards Cu2+ cation. X-ray studies, spectroscopic characterization and DFT calculations
摘要:
The reactions of 5,6-diphenyl-3-(2-pyridyl)-1,2,4-triazine with CUCl2 center dot 2H(2)O, Cu(NO3)(2) center dot 3H(2)O and CUSO4 center dot 5H(2)O have been examined, and four [CuCl2(dppt)] (1), [CuCl2(dPPt)(2)] center dot 2MeOH (2), [Cu(dppt)(2)(H2O)(2)](NO3)(2) (3) and [CU(SO4)(dppt)(H2O](n) center dot nH(2)O (4) complexes have been obtained. All the complexes have been structurally and spectroscopically characterized, and compound 4 has been additionally studied by magnetic measurements. The electronic structure of I has been calculated with the density functional theory (DFT) method, and the time-dependent DFT calculations have been employed to calculate the electronic spectrum of 1. (c) 2008 Elsevier Ltd. All rights reserved.