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    Öğe
    A New Photoluminescent and Antibacterial Polymeric Silver(I) Complex Generated from Pyridine-2,3-dicarboxylic Acid
    (Springer, 2013) Alisir, Sevim Hamamci; Sariboga, Bahtiyar; Topcu, Yildiray; Yang, Shi-Yao
    A new two-dimensional polymeric [Ag-2(mu-Hpydc)(2)(mu-pyz)](n) (1) (H (2) pydc = pyridine-2,3-dicarboxylic acid, pyz = pyrazine), has been synthesized and characterized by elemental analysis, IR spectroscopy, thermal analysis and single crystal X-ray diffraction. X-ray diffraction analyses show that Hpydc exhibits novel coordination mode in 1, acts as a bridging ligand between two Ag(I) centers via deprotonated carboxylate mu-O1 atoms, forming binuclear [Ag-2(mu-Hpydc)(2)] units (Ag center dot center dot center dot Ag separation is 2.9482(4) ). These units are connected to each other through pyz and Hpydc ligands, leading to two-dimensional polymeric structure. The coordination geometry around the silver(I) ions in the complex is a highly distorted square-pyramidal (tau = 0.229) with an AgN2O3 chromospheres. The solid state photoluminescence properties of 1 and H (2) pydc have been studied at room temperature. Furthermore, the complex has been tested for its in vitro antibacterial activity and is determined to be highly effective for antibacterial activity against Gram-positive and Gram-negative pathogenic bacteria cells. A new polymeric 2D silver(I) complex [Ag-2(mu-Hpydc)(2)(mu-pyz)](n) (1) (H (2) pydc = pyridine-2,3-dicarboxylic acid, pyz = pyrazine) has been synthesized and characterized by elemental analysis, IR spectroscopy, thermal analysis and single crystal X-ray diffraction. The solid state photoluminescence properties of 1 and H (2) pydc have been studied at room temperature and also it has been tested for its in vitro antibacterial activity.
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    Öğe
    Synthesis, characterization, crystal structure, Hirshfeld surface analysis and spectroscopic properties of bis(5-aminoisophthalato) bispicolinecopper (II)
    (Elsevier, 2020) Erdogmus, Gulnur; Demircioglu, Zeynep; Heren, Zerrin; Topcu, Yildiray; Buyukgungor, Orhan
    The 2D coordination polymer of Cu(II), [Cu(5-aip) (3-pic)(2)](n) (5-aip = 5-aminoisophthalato, 3-pic = 3-picoline) was characterized by elemental analysis, FT-IR and UV-Vis spectroscopy and single crystal XRD techniques. The X-ray single crystal data revealed that the polymeric coordination complex crystallizes in the monoclinic system with P2(1)/n space group and Cu(II) ion has five (square pyramidal) coordination number. X-ray diffraction analysis show that Cu(II) has a distorted square pyramidal geometry with tau = (175.75-160.0)/60) = 0.2625. Hirshfeld surface analysis was carried out, which reveals the nature of intermolecular contacts, the fingerprint plots and molecular surface contours (d(norm), d(i) and d(e)) provide the information about the percentage contributions [H center dot center dot center dot H (40.5%), C center dot center dot center dot H (29.2%), Cu center dot center dot center dot O (4.7%), N center dot center dot center dot H (4.9%), N center dot center dot center dot O (1.5%) and O center dot center dot center dot H (17.4%)] and revealed them major and minor contributions of the bond interactions for [Cu(5-aip) (3-pic)(2)](n) complex. According to UV-Vis spectrum, d-d transition observed at 712 nm (epsilon = 65 dm(3)mol(-1)cm(-1)) which is assigned to the d(z)(2) (a(1)) -> d(x-y)(22) (b(1)) transition. Thermogravimetric analysis was carried out to fallow the thermal stability of the complex. (C) 2020 Elsevier B.V. All rights reserved.