Metal complexes of Schiff bases derived from dicinnamoylmethane and aliphatic diamines

Abstract

Two new Schiff bases containing olefinic linkages have been synthesized by condensing aliphatic diamines with dicinnamoylmethane under specified conditions. The existence of these compounds predominantly in the intramolecularly hydrogen bonded keto-enamine form was well demonstrated by their IR, 1 H-NMR and mass spectral data. Dibasic tetradentate N 2 O 2 coordination of the compounds in their [ML] complexes (M = Ni(II), Cu(II) and Zn(II)) was established on the basis of analytical and spectral data.

Synthesis of Co(II) and Cr(III) salicylidenic Schiff base complexes derived from thiourea as precursors for nano-sized Co3O4 and Cr2O3 and their catalytic, antibacterial properties

“…In the FT-IR spectra of Co(II) complex (Fig. 2a), a strong band at 1624 cm -1 is due to the C=N stretching vibration [25]. In the spectra, no peaks corresponding to unreacted primary amines or carbonyl groups were observed.…”

An Efficient Recyclable Polymer Supported Copper(II) Catalyst for C–N Bond Formation by N-Arylation

“…In addition, the bands at 621, 533 and 548 cm -1 may be assigned to the Cu-O, Cu-N azo and Cu-N pyridine [39][40][41] stretching vibration respectively. In this catalyst a medium intensity band observed at 1318 cm -1 suggests the monodentate coordination of the acetate groups [42]. Monodentate acetate usually shows two bands at 1630 and 1310 cm -1 due to antisymmetric and symmetric stretching, respectively, [43].…”

Applications of 2-Aminophenol derived Schiff Base Transition Metal Complexes. A Review

“…Sayudevi et al [12] prepared two new Schiff bases containing olefinic linkages have been synthesized by condensing ortho-substituted aromatic amines with dicinnamoylmethane under specified conditions. The existence of these compounds predominantly in the intramolecularly hydrogen bonded keto-enamine form has been well demonstrated from their IR, 1H NMR and mass spectral data.…”