65940-45-6Relevant academic research and scientific papers
Two schiff base ligands derived from 1,2-Diaminoethane
Corden, Jonathan P.,Errington, William,Moore, Peter,Wallbridge, Malcolm G. H.
, p. 486 - 488 (1997)
The structures of two Schiff base ligands, 2,2′-[(1,2-ethanediyl) bis (nitrilopropylidyne)]bisphenol, C20H24-N2O2, (I), and 2,2′-{(1,2-ethanediyl)bis[nitrilo(phenyl)-methylidyne]}bisphenol, C28H2
Effects of diamine bridge length and substituents on the spectral properties of N,N′-bis(α-substituted salicylidene)diamines in solution
Kawasaki, Toshio,Kamata, Toshihide,Ushijima, Hirobumi,Kanakubo, Mitsuhiro,Murata, Shigeo,Mizukami, Fujio,Fujii, Yuki,Usui, Yoshiharu
, p. 193 - 198 (2007/10/03)
Absorption and fluorescence spectra of thirteen N,N′-bis(α-substituted salicylidene)diamines in solution were investigated with the intention of investigating the role of the substituent and diamine bridge length on their optical properties. The fluorescence efficiency was improved by an increase in the electron-donating property of the substituents on the azomethine carbon accompanied by an increase of the n→π* transition absorption. However, the effect did not occur for the substituents on the azomethine nitrogen, in which no drastic changes in fluorescence efficiency could be observed. Through the investigation of the diamine bridge length effects, it was found that a diamine Schiff base seems to form neither an inter- nor an intramolecular dimer with any peculiar fluorescence in the solution even if it has a long methylene bridge. It was also suggested that the diamine Schiff base has a third fluorescence species in the excited state, which might be a pre-keto form, the existence of which is strongly affected by the hydrogen bond strength between the hydroxy and azomethine groups.
SYNTHESIS OF SOME COMPLEXES OF SILICON TETRACHLORIDE WITH DIBASIC TETRADENTATE SCHIFF BASES
Ghose, Bhupendra Nath
, p. 191 - 196 (2007/10/02)
Tetradentate dibasic Schiff bases having the -ONNO- donor system react with silicon tetrachloride to give monomeric hexa-coordinated chelate complexes of the type Cl2SiL, where L represents the Schiff bases, bis(o-hydroxy acetophenone)-ethylenediimine (o-HAP-EN), bis(o-hydroxy benzophenone)-ethylenediimine (o-HBP-EN), bis(o-hydroxy acetophenone)-1,3-propylenediimine (o-HAP-PN), bis(o-hydroxy benzophenone)-1,3-propylenediimine (o-HBP-PN), bis(o-hydroxy acetophenone)-1,4-butylendiimine (o-HAP-BN), bis(o-hydroxy benzophenone)-1,4-butylenediimine (o-HBP-BN), bis(o-hydroxy acetophenone)-p-phenylenediimine (o-HAP-p-PD), bis(o-hydroxy benzophenone)-p-phenylenediimine (o-HBP-p-PD).
