One Novel Cu(II)–Amino Acid Schiff Base Complex Derived from Salicylaldehyde and L-Serine: Identification of Unusual Monodentate 4,4′-Bipyridine

Abstract

One novel copper(II) complex [Cu(L)(4,4 -bipy)](ClO 4 ) (1), (where L: tridentate Schiff base derived from salicylaldehyde and L-serine) has been synthesised and characterised by spectroscopic and electrochemical studies. The single-crystal structure of the complex was determined. The crystal structure features the presence of [Cu(L)(4,4 -bipy)] + cations and ClO 4 − anions aggregated by hydrogen bonding. Here, 4,4 -bipyridine functions as a monodentate ligand, which appears to be an unusual phenomenon.

Synthesis of β-amino alcohols catalyzed by poly(vinyl chloride)-supported Schiff base metal complexes

“…From these analytical data, the structure of the complex is assigned to be square-planar as shown in Scheme 3. Square-planar complexes of copper(II) with similar ligands were reported previously [39][40][41].…”

Spectral characterization, optical band gap calculations and DNA binding of some binuclear Schiff-base metal complexes derived from 2-amino-ethanoic acid and acetylacetone

“…The majority of work of amino acids Schiff-bases has been carried out on the aromatic aldehyde (salicylaldehyde) and its derivatives [13,14].…”

The zwitterion of N-(2-carboxyphenyl)-4-dimethylaminebenzylideneimine

“…Considerable attention has previously been given to amino acid Schiff bases and their complexes since they exhibit a wide range of biological activities [15,16]. Amino acid Schiff bases are used as a model compounds in the study of enzymatic transformations of amino acids (e.g., decarboxylation, transamination, and racemization), which require pyridoxal-5 0 -phosphate as a cofactor [17][18][19].…”