کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1309395 975208 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, characterization and thermodynamic study of copper(II) complexes with unsymmetric tetradentate Schiff base ligands and X-ray structure of {methyl-2-[N-[2-(5-chloro-2-phenolate)methylidynenitrilo]ethyl}aminato(-1)-1-cyclopentenedithiocarboxylate
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Synthesis, characterization and thermodynamic study of copper(II) complexes with unsymmetric tetradentate Schiff base ligands and X-ray structure of {methyl-2-[N-[2-(5-chloro-2-phenolate)methylidynenitrilo]ethyl}aminato(-1)-1-cyclopentenedithiocarboxylate
چکیده انگلیسی

A set of two Cu(II) complexes, [Cu(cdXsalen)] and [Cu(cdXsalMeen)] derived from Schiff base ligands (H2cdXsalen: methyl-2-{[2-(2-X-phenyl)methylidynenitrilo]ethyl}amino-1-cyclopentenedithiocarboxylate and H2cdXsalMeen: methyl-2-{[1-methyl-2-(2-X-phenyl)methylidynenitrilo]ethyl}amino-1-cyclopenteneithiocarb-oxylate where X = hydroxyl, methoxy, nitro, sodiumsulfite, chloro, bromo and H2cdMesalen: methyl-2-{[2-(2-hydroxyphenyl)ethylidynenitrilo]ethyl}amino-1-cyclopentenedithiocarboxylate; H2cdPhsalen: methyl-2-{[2-(2-hydroxyphenyl)phenylidynenitrilo]ethyl}amino-1-cyclopentenedithiocarboxylate; H2cdMesalMeen: methyl-2-{[1-methyl-2-(2-hydroxyphenyl)ethylidynenitrilo]ethyl}amino-1-cyclopentenedithiocarboxylate; H2cdPhsalMeen: methyl-2-{[1-methyl-2-(2-hydroxyphenyl)phenylidynenitrilo]ethyl}amino-1-cyclopentenedi-thiocarboxylate) with an unsymmetric NNOS coordination sphere have been synthesized and characterized by elemental analysis, IR, UV–Vis and mass spectrometry. The thermodynamic formation constants of the complexes were measured spectrophotometrically, at constant ionic strength 0.1 M (NaClO4), at 25 °C in DMF solvent. The trend of the complex formation for copper is as follow: [Cu(cdMesalen)]>[Cu(cdsalen)]>[Cu(cdPhsalen)][Cu(cdMesalMeen)]>[Cu(cdsalMeen)]>[Cu(cdPhsalMeen)][Cu(cdMesalen)]>[Cu(cdsalen)]>[Cu(cdPhsalen)][Cu(cdMesalMeen)]>[Cu(cdsalMeen)]>[Cu(cdPhsalMeen)] and [Cu(cd5OMesalen)]>[Cu(cd3OMesalen)]>[Cu(cd4OMesalen)][Cu(cd5OMesalMeen)]>[Cu(cd3OMesalMeen)]>[Cu(cd4OMesalMeen)][Cu(cd5OMesalen)]>[Cu(cd3OMesalen)]>[Cu(cd4OMesalen)][Cu(cd5OMesalMeen)]>[Cu(cd3OMesalMeen)]>[Cu(cd4OMesalMeen)] and [Cu(cd5OMesalen)]>[Cu(cdsalen)]>[Cu(cd5Brsalen)]>[Cu(cd5Clsalen)]>[Cu(cd5NO2salen)]>[Cu(cd5SO3Nasalen)][Cu(cd5OMesalMeen)]>[Cu(cdsalMeen)]>[Cu(cd5BrsalMeen)]>[Cu(cd5ClsalMeen)]>[Cu(cd5NO2salMeen)]>[Cu(cd5SO3NasalMeen)][Cu(cd5OMesalen)]>[Cu(cdsalen)]>[Cu(cd5Brsalen)]>[Cu(cd5Clsalen)]>[Cu(cd5NO2salen)]>[Cu(cd5SO3Nasalen)][Cu(cd5OMesalMeen)]>[Cu(cdsalMeen)]>[Cu(cd5BrsalMeen)]>[Cu(cd5ClsalMeen)]>[Cu(cd5NO2salMeen)]>[Cu(cd5SO3NasalMeen)] and [Cu(cdXsalMeen>[Cu(cdXsalen)].[Cu(cdXsalMeen>[Cu(cdXsalen)]. The structure of {methyl-2-[N-[2-(5-chloro-2-phenolate)methylidynenitrilo]ethyl}aminato(-1)-1-cyclopentene-dithiocarboxylatecopper(II), [Cu(cd5Clsalen)], has been determined by X-ray crystallography. The complex shows normal planar geometry around the copper center.

A set of two Cu(II) complexes, [Cu(cdXalen)] and [Cu(cdXsalMeen)] derived from Schiff base ligands with an unsymmetric NNOS coordination sphere have been synthesized. The thermodynamic formation constants of the complexes were measured spectrophotometrically, at constant ionic strength 0.1 M (NaClO4), at 25 °C in DMF solvent. The structure of {methyl-2-[N-[2-(5-chloro-2-phenolate)methylidynenitrilo]-ethyl}aminato(-1)-1-cyclopentenedithiocarboxylate copper(II), [Cu(cd5Clsalen)], has been determined by X-ray crystallography.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 362, Issue 14, 10 November 2009, Pages 4913–4920
نویسندگان
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