作者:I. V. Shemarova、E. B. Maizel'、I. V. Voznyi、N. P. Stepanova、A. E. Khovanskikh
DOI:10.1023/a:1010355129735
日期:——
Sengupta, Soumitra K.; Pandey, Om P.; Srivastava, Akhilesh K., Journal of the Indian Chemical Society, 2008, vol. 85, # 3, p. 247 - 251
作者:Sengupta, Soumitra K.、Pandey, Om P.、Srivastava, Akhilesh K.、Mishra, Mahendra K.、Tripathi, Chandra M.
DOI:——
日期:——
Experimental and DFT studies on the vibrational and electronic spectra of 1,5-dimethyl-2-phenyl-4-[(pyridin-4-ylmethylene)-amino]-1,2-dihydro-pyrazol-3-one
Vibrational spectral measurements were made for 1,5-dimethyl-2-phenyl-4-[(pyridin-4-ylmethylene)amino]-1,2-dihydro-pyrazol-3-one (DPPDP). Optimized geometrical structure and harmonic vibrational frequencies were computed by ab initio RHF and DFT (B-based BP86, BLYP, BPW91, B3-based B3P86, B3LYP, B3PW91 and O3-based O3LYP) methods using 6-311++G(d,p) basis set. Complete assignments of the observed spectra were proposed. The equilibrium geometries computed by all of the methods, were compared with X-ray diffraction results. The absorption spectra of the title compound were computed both in gas phase and in CH(3)CN solution using TD-B3LYP/6-311++G(d,p) and PCM-B3LYP/6-311++G(d,p) approaches and the calculated results provide a good description of positions of the two band maxima in the observed electronic spectrum. (C) 2010 Elsevier B.V. All rights reserved.