کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1337629 979638 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, characterization and antimicrobial activity of Ni(II) and Zn(II) complexes with N′,N′2-bis[(1E)-1-(2-pyridyl)ethylidene]propanedihydrazide. Crystal structures of two highly solvated bimetallic complexes of Ni(II)
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Synthesis, characterization and antimicrobial activity of Ni(II) and Zn(II) complexes with N′,N′2-bis[(1E)-1-(2-pyridyl)ethylidene]propanedihydrazide. Crystal structures of two highly solvated bimetallic complexes of Ni(II)
چکیده انگلیسی

The bimetallic [Ni2(H2L2)2](ClO4)4 (1), [Ni2(HL2)(H2L2)](ClO4)3 (2) and [Zn2(H2L2)2](BF4)4 (3) complexes (H2L2 = N′,N′2-bis[(1E)-1-(2-pyridyl)ethylidene]propanedihydrazide) were synthesized and characterized. The structure of complexes (1) and (2) was established by X-ray analysis. NMR spectroscopy was used for the characterization of complex (3). The complexes (1) and (2) were obtained from the same synthetic reaction and two crystal types of these complexes have been isolated during the fractional crystallization process.In complex (1) each Ni(II) ion is coordinated with two NNO donor atom sets from two H2L2 ligands forming an octahedral geometry. Similarly, in complex (2) the octahedral geometry of each Ni(II) ion is attained by coordination of two NNO donor atom sets, one from the neutral and the other from the monoanionic form of the ligand. The antimicrobial activity of the ligand and complexes is also presented.

The bimetallic Ni(II) complexes with N′,N′2-bis[(1E)-1-(2-pyridyl)ethylidene]propanedihydrazide (H2L2), [Ni2(H2L2)2](ClO4)4 (1) and [Ni2(HL2)(H2L2)](ClO4)3 (2), were isolated during the fractional crystallization process. The less stable green crystals of (1) with a layered structure converted slowly to brown crystals of (2) having a channel structure while being kept in the solution.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polyhedron - Volume 28, Issue 12, 5 August 2009, Pages 2397–2402
نویسندگان
, , , , , , , ,