Synthesis, spectral, thermal and optical properties of Schiff-base complexes derived from 2(E)-2-((z)-4-hydroxypent-3-en-2-ylideneamino)-5-guanidinopentanoic acid and acetylacetone

被引：17

作者：

Hosny, Nasser Mohammed ^{[1
]}

Hussien, Mostafa A. ^{[1
]}

Radwan, Fatima M. ^{[1
]}

Nawar, Nagwa ^{[2
]}

机构：

[1] Port Said Univ, Fac Sci, Dept Chem, Port Said, Egypt

[2] Mansoura Univ, Fac Sci, Dept Chem, Mansoura, Egypt

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2017年 / 1143卷

关键词：

Amino acids; Schiff-base complexes; Spectral analyses; Thermal analyses; METAL-COMPLEXES; AMINO-ACIDS; DNA-BINDING; BIOLOGICAL-ACTIVITIES; COPPER II; NANOPARTICLES; LIGAND; 2-ACETYLPYRIDINE; PARAMETERS; PRECURSOR;

D O I：

10.1016/j.molstruc.2017.04.063

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

New metal complexes derived from the in situ reaction of Cu(II), Co(lI), Ni(II) and Zn(II) acetates with the Schiff-base ligand (H2L) resulted from the condensation of 2-amino-5-guanidinopentanoic acid (arginine) and acetylacetone have been synthesized. The resulting complexes have been characterized by, elemental analyses, ES-MS, IR, Raman spectra, UV-Vis., (HNMR)-H-1, ESR, thermal analyses (TGA and DTG) and magnetic measurements. The results showed that, The Schiff-base ligand acts as bi-negative tridentate coordinating via azomethine nitrogen, enolic carbonyl oxygen and carboxylate oxygen after displacement of hydrogen. The thermodynamic parameters E*, Delta H, Delta G and Delta S of the isolated complexes have been, calculated. The optical band gap (E-g) values of Cu, Co, Ni and Zn were found to be 3.3, 3.4, 3.7 and 4.3 eV, respectively, arising from direct transitions. Optical band gap measurements indicate the semi-conductivity nature of these complexes. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：176 / 183

页数：8

共 42 条

[1] Synthesis, structure elucidation, biological screening, molecular modeling and DNA binding of some Cu(II) chelates incorporating imines derived from amino acids [J].