کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1340599 979742 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An investigation of the positional isomeric effect of terpyridine derivatives: Self-assembly of novel cadmium coordination architectures driven by N-donor covalence and π⋯π non-covalent interactions
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
An investigation of the positional isomeric effect of terpyridine derivatives: Self-assembly of novel cadmium coordination architectures driven by N-donor covalence and π⋯π non-covalent interactions
چکیده انگلیسی

Four cadmium compounds based on two pyridyl substituted terpyridine isomers, namely {[Cd3(L1)2(SCN)6](THF)2}n (1), [Cd2(L1)(CH3OH)Cl4]n (2), [Cd2(L2)2(N3)4] (3) and [Cd2(L2)2(SCN)4] (4) (L1 = 4′-(3-pyridyl)-2,2′:6′,2″-terpyridine, L2 = 4′-(2-pyridyl)-2,2′:6′,2″-terpyridine) have been synthesized and characterized by IR, elemental analyses, and luminescent spectroscopy with the purpose of investigating the influence of isomeric effect on network assembly. In compounds 1 and 2, L1 as a mono-tridentate bridging ligand links CdII atoms into 1D grid-like and 2D wave-like polymers. In contrast, in compounds 3 and 4, L2 as a chelating ligand forms CdII dimeric structures. The different coordination behaviors and the positional isomer effect were discussed under the same reaction conditions. In addition, three kind of π⋯π interactions in the four compounds were summarized, two of which could not be observed on tpy-based complexes.

The reaction of two pyridyl substituted terpyridine isomers L1 and L2 with CdII atoms resulted in different dimensional architectures. L1 as a mono-tridentate bridging ligand links Cd3 and Cd4 clusters into 1D grid-like and 2D wave-like polymers, respectively. However, L2 as a chelating ligand forms binuclear structures.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polyhedron - Volume 27, Issue 5, 7 April 2008, Pages 1517–1526
نویسندگان
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