Novel 3d-metal complexes with 1,2-diamino-3-(2-benzothiazolyl)-4(5H)-ketopyrrole: Synthesis, spectroscopic and structural investigations

Add time:09/06/2019    Source:sciencedirect.com

A series of new 3d-metal complexes have been prepared by the reaction of M(CH3COO)2 (M = Zn(II), Co(II), Ni(II)) and 1,2-diamino-3-(2-benzothiazolyl)-4(5H)-ketopyrrole (HL) in a methanol (3) or a methanol/dmf (1, 2) medium. All the complexes have been studied by elemental analyses, electronic and IR spectroscopies. The zinc(II) complex 1 and the ligand HL have been investigated using the method of 1H NMR-spectroscopy at various temperatures. The disappearance of the signal from one proton of the amino group H(5) in the spectrum of complex 1 confirmed the existence of the ligand in the deprotonated form. According to the data of the 1H NMR-spectroscopy, the ligand HL is coordinated to zinc(II) through the nitrogen atom of the deprotonated amino group and the nitrogen atom of the benzothiazole substituent. These data are in agreement with X-ray structural studies for the ligand HL and the zinc(II) complex 1.

We also recommend Trading Suppliers and Manufacturers of 1-(2-BENZOTHIAZOLYL)-4-BROMOBENZENE (cas 19654-19-4). Pls Click Website Link as below: cas 19654-19-4 suppliers

Prev:Original articleAnticonvulsant and neurotoxicity evaluation of some 6-substituted benzothiazolyl-2-thiosemicarbazones
Next:Structures of hydrazones, (E)-2-(1,3-benzothiazolyl)-NHNCHAr, [Ar = 4-(pyridin-2-yl)phenyl, pyrrol-2-yl, thien-2-yl and furan-2-yl]: Difference in conformations and intermolecular hydrogen bonding)