Crystal Structure of N-(2-Pyridylmethylene)benzene-1,4-diamine

Green‐Light‐Induced PhotoCORM: Lysozyme Binding Affinity towards MnI and ReI Carbonyl Complexes and Biological Activity Evaluation

“…The bidentate Schiff‐base ligand (L) was synthesized by reaction of 2‐pyridine carboxaldehyde with one equivalent of 1,4‐diamino‐benzene in ethanol (Scheme ) . NMR spectra and IR chart of L are given in the supporting information (Figures S1 and S2).…”

“…Bromo penta‐carbonyl manganese(I) and bromo pentacarbonyl rhenium(I) were purchased from Sterm. Schiff‐base ligand was synthesized following the published procedure . 1 H and 13 C NMR spectra were recorded with Bruker‐Avance 500 [ 1 H, 500.13 MHz and 13 C( 1 H), 125.77 MHz] and Bruker‐Avance 400 [ 1 H, 400.40 MHz; 13 C( 1 H), 100.70 MHz] spectrometers.…”

“…The bidentate Schiff-base ligand (L) was synthesized by reaction of 2-pyridine carboxaldehyde with one equivalent of 1,4-diamino-benzene in ethanol (Scheme 1). [31] NMR spectra and IR chart of L are given in the supporting information (Figures S1 and S2). In the dark, reaction of L with [MBr ( NMR spectrum of the free ligand shows two characteristic signals at δ = 8.64 (doublet) and 8.58 ppm (singlet) assigned to pyridine-H6 and -CH=N-protons.…”

“…The ligand (L) was synthesized according to the literature method. [31] 2-pyridine carboxaldehyde (3.21 g, 30 mmol) was added to the ethanolic solution of 1,4diaminobenzene (3.24 g, 30 mmol) and the reaction mixture was stirred at room temperature for 90 min, where a yellow precipitate was formed. Caution: Organometallic compounds bearing azide group may be exposed to unexpected violent decomposition.…”

Crystal Structures of Novel Bis-No-Acyclic Schiff Base Compounds

“…A Schiff base, named after Hugo Schiff, is formed by the condensation of an amine group with the carbonyl group of an aldehyde or ketone. The mechanism of this reaction consists of the nucleophilic addition of the amine group to the carbonyl one, forming a hemiaminal, followed by a dehydration to generate an imine of the general formula R3R2C=NR1 [1][2][3][4]. Schiff bases can be used as ligands in coordination chemistry because of the basic character of S-acceptor properties of the imine nitrogen atom [5][6][7][8].…”