The Synthesis, X-ray Crystal Structure and Optical Properties of Novel 5-aryl-3-ferrocenyl-1-pyridazinyl-pyrazoline Derivatives

A series of novel 5-aryl-3-ferrocenyl-1-pyridazinyl pyrazoline derivatives was synthesized by the reaction of ferrocenyl chalcone and 3-chloro-6-hydrazinylpyridazine in 10–65% yields. The compounds were characterized using IR, 1 H NMR, HRMS spectroscopic techniques and representative compounds 3c an...

Full description

Saved in:
Bibliographic Details
Published in:Journal of fluorescence 2011, Vol.21 (1), p.355-364
Main Authors: Gong, Zhong-Liang, Xie, Yong-Sheng, Zhao, Bao-Xiang, Lv, Hong-Shui, Liu, Wei-Yong, Zheng, Liang-Wen, Lian, Song
Format: Article
Language:English
Subjects:
Absorption spectra
Analytical Chemistry
Biochemistry
Biological and Medical Physics
Biomedical and Life Sciences
Biomedicine
Biophysics
Biotechnology
Crystal structure
Derivatives
Fluorescence
Maxima
Original Paper
Pyridazines
Solvents
X-rays
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A series of novel 5-aryl-3-ferrocenyl-1-pyridazinyl pyrazoline derivatives was synthesized by the reaction of ferrocenyl chalcone and 3-chloro-6-hydrazinylpyridazine in 10–65% yields. The compounds were characterized using IR, 1 H NMR, HRMS spectroscopic techniques and representative compounds 3c and 4c were assigned based on the X-ray crystallographic structure. The absorption and fluorescence characteristics of the compounds were investigated in chloroform, tetrahydrofuran and acetonitrile, respectively. The results showed that the absorption maxima of the compounds varied from 323 to 327 nm depending on the groups bonded to benzene and pyridazine ring. The maximum emission spectra of compounds in CHCl 3 were dependent on groups in pyridazine ring in which a strong donating-electron group such as propoxyl group on pyridazine ring in N-1 position of pyrazoline made the emission wavelength of 4a-4e small red shifte than that of compounds 3a-3e with chlorine group. The intensity of absorption and fluorescence was also correlated with substituent on aryl ring in C-5 position of pyrazoline. In addition, the absorption spectra of these compounds changed very little, but the fluorescence spectra had much change with increasing solvent polarity.
ISSN:1053-0509
1573-4994
DOI:10.1007/s10895-010-0724-z