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-3,4pydc)(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 1,3diaminopropan (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.