کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1231679 1495219 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Syntheses, crystallographic, mass-spectroscopic determination and antioxidant studies of Co(II), Ni(II) and Cu(II) complexes of a new imidazol based Schiff base
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Syntheses, crystallographic, mass-spectroscopic determination and antioxidant studies of Co(II), Ni(II) and Cu(II) complexes of a new imidazol based Schiff base
چکیده انگلیسی


• Co(II), Ni(II), Cu(II) complexes of imidazolic Schiff base have been synthesized.
• The geometries of all complexes have found to be distorted octahedra.
• Structural and electronic properties of Cu(II) complex have been further studied.
• Radical scavenging behaviors of the complexes have been explored.

A new imidazole-based Schiff base, 2-((1H-imidazol-4-yl)methyleneamino)benzylalcohol (HL) and corresponding analogous bis(2-((1H-imidazol-4-yl)methyleneimino)benzylalcohol)metal(II) perchlorates (M: Co(1), Ni(2), Cu(3)) have prepared and characterized by elemental analyses, ESI-MS, IR, UV–Vis spectroscopies and conductivity measurements. X-ray single crystal structures of 1 and 2 have been also determined. Elemental analyses, spectroscopic and conductance data of 3 demonstrated similar structural features with these of crystallographically characterized complexes and based upon this relevances, HL ligands are neutrally coordinated to metal(II) ions in tridentate mode and all complexes are isostructural, dicathionic, contain perchlorate anions as complementary ions and, are in octahedral geometry with the formulae of [M(HL)2](ClO4)2 (for 3) and [M(HL)2](ClO4)2·H2O (for 1 and 2). Radical scavenging activities of the complexes have been evaluated by using DPPH, DMPD+, and ABTS+ assays. SC50 values (μg/mL) of the complexes and standards on DPPH, DMPD+, ABTS+ follow the sequences, BHA (9.06 ± 0.33) > CMPD3 (15.62 ± 0.52) > CMPD2 (17.43 ± 0.29) > Rutin (21.65 ± 0.60) > CMPD1 (25.67 ± 0.51) > Trolox (28.57 ± 0.37), Rutin > BHA > CMPD3 > CMPD2 > Trolox > CMPD1, and Trolox > BHA > CMPD3 > CMPD2 > Rutin > CMPD1 respectively.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 150, 5 November 2015, Pages 821–828
نویسندگان
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