مشخصات پژوهش

صفحه نخست /Design and construction of ...
عنوان Design and construction of Zn(II) coordination polymers made by pincer type pyridine-hydrazine based ligands
نوع پژوهش مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها Zn(II) complexes Coordination polymers Crystal engineering Crystal structures Hirshfeld surface analysis
چکیده A new series of five zinc (II) coordination polymers, namely [Zn(LI )(NO3)(OH2)]n (1), [Zn(LI )(CH3COO)]n (2), [Zn(LI )(NCS)]n (3), [Zn(LII)(CH3COO)]n (4), and {[Zn2(LII)2(N3)2] ,H2O}n (5), has been self-assembled from different zinc (II) salts and pyridine-hydrazine ligands {HLI ¼ 2-pyridinecarbaldehyde isonicotinoyl hydrazone, and HLII ¼ 2-acetyl-pyridyl-isonicotinoylhydrazone} and has been structurally characterized. In all compounds, the ligand is singly-deprotonated and coordinates to the zinc center in the enolic form (¼NeN¼CeO- ). In other words, the pyridine-hydrazine ligand acted as a tetradentate negatively charged chelating-bridging ligand and coordinated to the metal centers in N, N, O pincer mode and the Para-nitrogen of the pyridine ring coordinated to the zinc center of the adjacent unit. In compounds (1)-(4) the ancillary ligands act as terminal ligands and the zinc centers bridging by the pyridine-hydrazine building blocks formed one-dimensional 1D coordination polymers, whereas the azide N3 anion in compound (5) further acted as a bridging agent and led to the formation of twodimensional 2D network. A detailed analysis of Hirshfeld surfaces and fingerprint plots allows a comparison of intermolecular interactions in (1)e(5), which are crucial in building supramolecular architectures.
پژوهشگران والدمار منیکیوز (نفر پنجم)، جاناتان وایت (نفر چهارم)، علی اکبر خاندار (نفر سوم)، قدرت محمودی (نفر دوم)، فرهاد اکبری افخمی (نفر اول)