AI Summary & Key Takeaways
AI InsightIn complex 2, both Cu(II) ion was coordinated by 3,4-pydc ligand with its nitrogen atom in a monodentate manner and Cu(II) ion was coordinated by 3,4-pydc ligand with its nitrogen and oxygen atoms in a bidentate manner which exhibit bridged ligand. 3D supramolecular structures of complexes consist of N–H∙∙∙O and O–H∙∙∙O type hydrogen bonding interactions.
📌 3 Key Takeaways
Abstract
In this study, new two Cu(II)-pyridine-3,4-dicarboxylate (3,4-pydc) complexes with 1,2-diaminoethane (en) and 1,3-diaminopropane (pen), Cu(3,4-pydc)(en)2 ]∙2H2O (1) and {[Cu(3,4-pydc)(pen)2 ][Cu(µ-3,4-pydc)(pen)2]∙H2O}n (2) have been synthesized and characterized by elemental analysis, FT-IR spectroscopy, UV–Vis. spectroscopy, thermal analysis and single crystal X-ray diffraction studies. The molecular structures of mononuclear 1 and both mono and polynuclear 2 complexes have been determined by the single crystal X-ray diffraction. In complex 1, Cu(II) ion was coordinated by 3,4-pydc ligand with its nitrogen atom in a monodentate manner. In complex 2, both Cu(II) ion was coordinated by 3,4-pydc ligand with its nitrogen atom in a monodentate manner and Cu(II) ion was coordinated by 3,4-pydc ligand with its nitrogen and oxygen atoms in a bidentate manner which exhibit bridged ligand. 3D supramolecular structures of complexes consist of N–H∙∙∙O and O–H∙∙∙O type hydrogen bonding interactions.
Özet
Bu çalışmada piridin-3,4-dikarboksilik asit (3,4-pydcH2) ve diamin türevi 1,2-diaminoetan (en) ve 1,3-diaminopropan (pen) ligantları kullanılarak karışık ligantlı [Cu(3,4-pydc)(en)2]∙2H2O (1) kompleksi ve {[Cu(3,4-pydc)(pen)2][Cu(μ-3,4-pydc)(pen)2]∙H2O}n (2) koordinasyon polimeri sentezlendi ve yapıları, elementel analiz, FT-IR spektroskopisi, UV-Vis spektroskopisi, termal analiz (TG/DTA) ve X-ışınları tek kristal çalışmaları ile aydınlatıldı. X-ışını tek kristal analizi çalışmaları sentezlenen 1 kompleksinin mononükleer, 2 kompleksinin yapısında ise hem mononükleer hem de 1D polinükleer yapının bulunduğunu göstermektedir. 3,4-pydc ligantı 1 kompleksinde tek dişli ligant olarak davranarak azot atomundan Cu(II) iyonuna koordine olmuştur. 2 kompleksinde ise mononükleer birimde azot atomundan tek dişli olarak, polinükleer birimde ise hem azot hem de karboksilat oksijen atomundan Cu(II) iyonlarını arasında köprü ligant özelliği sergilemektedir. Komplekslerin 3D supramoleküler yapıları, N–H∙∙∙O ve O–H∙∙∙O tipi hidrojen bağları etkileşimleri sayesinde oluşmaktadır.