Synthesis, Characterization and Structural Investigations of Two New Cu(II)-Pyridine-3,4-dicarboxylate Complexes

Yıl 2016, Cilt: 16 Sayı: 3, 531 - 543, 31.12.2016

Fatih Semerci

Öz

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.

Anahtar Kelimeler

Pyridine-3,4-, dicarboxylate, complexes, diamine complexes, Hydrogen bonds, Single crystal XRay diffraction analysis, Thermal analysis

İki Yeni Cu(II)-Piridin-3,4-dikarboksilat Komplekslerinin Sentezi, Karakterizasyonu ve Yapısal Özelliklerinin İncelenmesi

Öz

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.

Anahtar Kelimeler

Piridin-3, 4-dikarboksilat kompleksleri; Diamin kompleksleri; Hidrojen bağları, Tek kristal X-ışınları difraksiyonu analizi, Termal analiz

Kaynakça

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