Bir boyutlu (1D) 5-nitroisoftalat Cu(II) ve Cd(II)-koordinasyon polimerlerinin hidrotermal sentezi ve karakterizasyonu

5-nitroisoftalik asit (5-nipH2) ve 1-metilimidazol (1-meim) ligantları ile iki yeni 1D Cu(II) ve Cd(II) koordinasyon polimeri, {[Cu(µ-5-nip)(1-meim)2(H2O)]∙2H2O}n (1) ve {[Cd(µ3-5-nip)(1-meim)(H2O)]∙H2O}n (2) hidrotermal yöntemle sentezlendi ve yapıları elementel analiz, IR spektroskopisi ve tek kristal X-ışınları kırınım yöntemiyle aydınlatıldı. X-ışınları analiz sonuçlarına göre 5-nitroisoftalat ligantı her iki komplekste de köprü ligantı olarak hareket etmiş ve komplekslerin bir boyutlu yapısı meydana gelmiştir. Her iki komplekste de 5-nip ligantının farklı bağlanma biçimi sergilediği tespit edilmiştir. Komplekslerin 2D ve 3D supramoleküler yapıları O−H···O hidrojen bağları ve π···π etkileşimleri ile oluşmuştur. 2 kompleksinde, D4 su kümesi bulunmaktadır. Ayrıca, komplekslerin termal, fotolüminesans ve optik özellikleri de detaylı şekilde çalışılmıştır.

Anahtar Kelimeler:

5-nitroisoftalat ligantı, koordinasyon polimeri, hidrotermal sentez

Hydrothermal synthesis and characterization of one dimensional (1D) 5-nitroisophthalate Cu(II) and Cd(II)-coordination polymers

Two new one dimensional (1D) Cu(II) and Cd(II)-coordination polymers, namely {[Cu(µ-5-nip)(1-meim)2(H2O)]∙2H2O}n (1) and {[Cd(µ3-5-nip)(1-meim)(H2O)]∙H2O}n (2), (5-nip= 5-nitroisophthalate, 1-meim= 1-methylimidazole) were synthesized by hydrothermal method with 5-nitroisophthalic acid and 1-methylimidazole. They were characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction. X-ray analysis results showed that 5-nip acted as a bridging ligand in both complexes and 1D chains of the complexes occurred. In the complexes, 5-nip ligand displayed two different coordination modes. 2D and 3D supramolecular structures of the complexes were generated through O−H···O hydrogen bonding and π··· π interactions. Moreover, thermal, photoluminescence and optic properties were studied in detail.

Keywords:

5-nitroisophthalate ligand, coordination polymer, hydrothermal synthesis,

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