کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1302248 1498961 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Coordination assembly of helicate and mesocate with two-armed carbohydrozine ligand: Synthesis, structure and fluorescence
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Coordination assembly of helicate and mesocate with two-armed carbohydrozine ligand: Synthesis, structure and fluorescence
چکیده انگلیسی

Two-armed carbohydrozine ligand, H2L1 and its cobalt(III) and zinc(II) complexes (1 and 2) have been synthesized and characterized by single-crystal X-ray diffraction analysis. In the solid state, compound 1 has double-strand helicate structure involving ligand that twists to the central metal ions. Abundant π…π stacking interaction extended in the crystallographic bc plane. However, compound 2 has mesocate structure with a side-by-side arrangement of two ligands. The structure of zinc(II) compound 2 can be described as plane-symmetry one with symmetry plane perpendicular to the metal linker. The π…π stacking interaction existed in the crystallographic ac plane of compound 2. Weak intermolecular interactions play dominant roles in shaping the extended two-dimensional structures for all the molecules in the solid state. In solution, zinc(II) compound 2 exhibited strong ligand-based π*–π fluorescent emissions that can be tuned by the attached proton, a potential proton probe model.

Metal-dependent assembly of helicate versus mesocate supramolecular structures was obtained. By virture of metal-induced deprotonation in the self-assembly, pH-responsive fluorescent property of Zn2 +-mesocate was reported.Figure optionsDownload as PowerPoint slideHighlights
► Metal-dependent assembly of helicate versus mesocate supramolecular structures was obtained.
► Metal coordination induced deprotonation in the self-assembly.
► pH-responsive fluorescent property of Zn2 +-mesocate was reported.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganic Chemistry Communications - Volume 29, March 2013, Pages 205–209
نویسندگان
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