مشخصات پژوهش

صفحه نخست /New cadmium(II) and zinc(II) ...
عنوان New cadmium(II) and zinc(II) coordination polymers derived from a pyridine-hydrazone block: Self-assembly generation, structural and topological features, and theoretical analysis
نوع پژوهش مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها Structural diversity 2-Benzoylpyridine-isonicotinoylhydrazone Coordination polymers Crystal structure Hirshfeld surface analysis
چکیده A new series of cadmium(II) and zinc(II) coordination polymers, formulated as {[Cd1.5(μ-L)(μ-CH3COO)(μ-N3)(CH3OH)]·3CH3OH}n (1), {[Zn(μ-L)Br]·CH3OH}n (2), {[Zn(μ-L)I]·CH3OH}n (3), {[Zn(μ-L)(N3)]·C2H5OH}n (4), and [Zn2(μ-L)2(μ-N3)2]n (5), was self-assembled from the metal(II) acetates (or nitrates), a multifunctional pyridine-hydrazone building block {HL = 2-benzoylpyridine-isonicotinoylhydrazone}, and auxiliary ligands selected from NaN3, KBr, or KI. All products 1–5 were isolated as stable crystalline solids and were fully characterized by elemental analysis, IR spectroscopy, and single-crystal X-ray diffraction. Although in all compounds the pyridine-hydrazone blocks L1− simultaneously act as μ-spacers and N2,O-chelators (adopting the enolic = NNCO form), the structures of 1–5 are modulated by the type of an auxiliary ligand and thus vary from ladder-like double chains in 1 and zigzag 1D chains in 2–4 to intricate 2D layers in 5. Topological analysis of the underlying metal-organic networks revealed the 2C1 (in 2–4) and hcb (in 5) topologies, while a decorated ladder was identified in 1. Besides, the structure of 1 revealed an interesting example of cyclic hexameric (CH3OH)6 clusters formed by H-bonding interactions between adjacent methanol molecules of crystallization. The role of hydrogen bonds, π⋯π interactions, and presence of solvent molecules of crystallization was analyzed from the structural data and by Hirshfeld surface analysis.
پژوهشگران الکساندر کیریلو (نفر ششم به بعد)، جاناتان وایت (نفر ششم به بعد)، جانسوز لیپوسکی (نفر ششم به بعد)، پیوتر گارزارک (نفر ششم به بعد)، الیس مولینز (نفر پنجم)، مجتبی امینی (نفر چهارم)، قدرت محمودی (نفر سوم)، علی اکبر خاندار (نفر دوم)، فرهاد اکبری افخمی (نفر اول)