Browsing by Author "Kazak, Canan"
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Item (3-aminopyridine-kappa N-1)(saccharinato-kappa N)silver(I)(Wiley-Blackwell, 2007-12) Hamamcı, Sevim; Kazak, Canan; Yılmaz, Veysel Turan; Uludağ Üniversitesi/Fen Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; 7006269202The Ag-I atom in the title complex, [Ag(C7H4NO3S)(C5H6N2)], adopts an almost linear AgN2 geometry with a saccharinate anion and a 3-aminopyridine ligand. Discrete molecules are linked by N-H center dot center dot center dot O hydrogen bonds into a three-dimensional network.Item Bis(saccharinato)palladium(II) and platinum(II) complexes with 2,2 '-bipyridine: Syntheses, structures, spectroscopic, fluorescent and thermal properties(Pergamon-Elsevier Science, 2010-03-10) Kazak, Canan; Güney, Emel; Yılmaz, Veysel Turan; Uludağ Üniversitesi/Fen Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; 25027291500; 7006269202New palladium(II) and platinum(II) complexes, cis-[Pd(bpy)(sac)(2)] (1) and cis-[Pt(bpy)(sac)(2)] (2), where sac = saccharinate, bpy = 2,2'-bipyridine, have been synthesized and characterized by elemental analysis, UV-Vis, IR, H-1 NMR and C-13 NMR. The structures of the DMSO solvated complexes are determined by X-ray diffraction. Both complexes are isomorphous and the metal ions are coordinated by two N-bonded sac ligands, and two nitrogen atoms of pyridyl groups of bpy in a cis fashion. The mononuclear species interact each other through weak intermolecular C-H center dot center dot center dot O hydrogen bonds, C-H center dot center dot center dot pi and pi-pi interactions leading to three-dimensional supramolecular networks. All complexes exhibit a high thermal stability in the solid state, and are fluorescent in the solution.Item Bis[2-(ethylamino)ethanol-kappa N-2,O]bis(saccharinato-kappa N) cadmium(II)(Int Union Crystallography, 2007-12) Kazak, Canan; Yılmaz, Veysel Turan; Uludağ Üniversitesi/Fen Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; 7006269202In the centrosymmetric title complex, [Cd(C7H4NO3S)(2)(C4H11NO)(2)], the Cd-II ion is coordinated by two saccharinate (sac) anions and two N,O-bidentate 2-(ethylamino) ethanol ligands, displaying a distorted octahedral coordination. Pairs of molecules are doubly bridged by O-H center dot center dot center dot O hydrogen bonds and these dimers are further linked by weak C-H center dot center dot center dot pi(sac) interactions.Item Concomitant crystallization of Copper(II) sachharinato complexes with 2-methylpyrazine as a monomer and an one-dimensional polymer: Syntheses, crystal structures, spectroscopic and thermal properties(Springer, 2008-06-03) Senel, Evrim; Kazak, Canan; Yilmaz, Veysel Turan; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; 7006269202The reaction of [Cu(sac)(2)(H(2)O)(4)] center dot 2H(2)O with 2-methylpyrazine (mpyz) leads two complexes, concomitant crystallization of a mononuclear complex [Cu(sac)(2)(mpyz)(H(2)O)(2)] (1) and a polymeric complex [Cu(sac)(2)(mu-mpyz)](n) (2). Both complexes have been characterized by elemental analyses, magnetic measurements, FT-IR and ESR, TG-DTA and single-crystal X-ray diffraction analyses. Single-crystal X-ray analyses show that complex 1 consists of discrete molecules in which the copper(II) ions exhibits a square-pyramidal coordination geometry. The individual molecules of 1 are connected into a hydrogen-bonded chain structure, which is further assembled to form a three-dimensional network by pi-pi stacking interactions. Complex 2 is an 1D coordination polymer in which copper(II) centers are bridged by the mpyz ligand. The chains are further assembled to form two-dimensional frameworks by pi-pi and C-H center dot center dot center dot pi stacking interactions.Item Copper(II)-saccharinato complexes with piperazine and N-(2-aminoethyl)piperazine ligands(Elsevier, 2008-04-07) Güney, Serkan; Kazak, Canan; Yılmaz, Veysel Turan; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; O-3337-2018; S-1281-2017; 7006269202Two copper(II) complexes of the saccharinate anion (sac) with piperazine (ppz) and N-(2-aminoethyl)piperazine (aeppz), namely [Cu(sac)(2)(ppz)(H2O](n) (1) and trans-[Cu(sac)(2)(aeppz)(2)] (2), have been synthesized and characterized by elemental analyses, UV-Vis, FT-IR, TGA/DTA, X-ray diffraction and magnetic measurements. The ppz ligands in 1 bridge the copper(II) centers through both nitrogen atoms to form a ID helical chain structure and the distorted trigonal-bipyramidal coordination geometry at each copper center is completed by an aqua and a pair of N-bonded sac ligands. The helical chains are linked by Ow-H center dot center dot center dot O hydrogen bonds to build a 2-D network. In complex 2, copper(II) ions are octahedrally coordinated by two sac anions and two neutral aeppz ligands, displaying a distorted octahedral coordination. Sac is O-bonded via the carbonyl group, while ppzea. acts as a N,N'-bidentate chelating ligand. The molecules are connected by N-H center dot center dot center dot N and N-H center dot center dot center dot O hydrogen bonds, forming a linear chain. In the thermal decomposition of both complexes, the removal of the aqua and ppz or aeppz ligand takes place endothermically in the first stages and the sac moiety undergoes highly exothermic decomposition at higher temperatures to give CuO.Item Crystallographic and conformational analysis of 2-methyl-3-(2-nitro-phenyl)-4-phenyl-[1,2,4]oxadiazolidin-5-one(Springer/Plenum Publishers, 2005-08) Karabıyık, Hasan; Aygün, Muhittin; Kazak, Canan; Coşkun, Necdet; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.; 7004177880Molecular and crystal structure of 2-methyl-3-(2-nitro-phenyl)-4-phenyl-[1,2,4]oxadiazolidin-5-one, C15H13N3O4, have been determined by single crystal X-ray diffraction Study. The title compound is monoclinic, with a = 10.0313(8) angstrom, b = 9.0372(5) angstrom, c = 15.5964(14) angstrom, beta = 96.926(7)degrees, Z = 4, D-x = 1.42 g/cm(3), mu (Mo-K-alpha) = 0.105 mm(-1), and space group is P 2(1)/c. The structure was solved by direct methods and refined to a final R = 0.036 for 1894 reflections with I > 4 sigma(I). The crystal structure is stabilized by C-H center dot center dot center dot O type inter-molecular, C-H center dot center dot center dot N and C-H center dot center dot center dot O type intra-molecular, pi-pi stacking and edge to face (C-H center dot center dot center dot pi-ring) interactions. To enlighten conformational flexibility of the title molecule, selected two torsion angles are varied from - 180 degrees to +180 degrees in every 10 degrees separetely and then molecular energy profile is calculated and construed.Item Hydrothermal and sonochemical synthesis of a nano-sized 2D lead(II) coordination polymer: A precursor for nano-structured PbO and PbBr2(Elsevier, 2009-07-16) Aslani, Alireza; Morsali, Ali; Kazak, Canan; Yılmaz, Veysel Turan; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; 7006269202A new nano-structured lead(II) coordination polymer, [Pb(mu-bpp)(mu-Br)(2)](n) (PBB) [bpp = 1,3-di(4-pyridyl)propane], has been synthesized by the reaction of a mixture lead(II) acetate and KBr with bpp by both hydrothermal and sonochemical methods. Reaction conditions, such as temperature, time, concentration and initial reagents play important roles in the size, morphology and crystal growth of the final products. The nano-sized PbBr2 and PbO were prepared from the calcination of the nano-structured PBB at vacuum and air atmosphere. The structure of PBB was determined by X-ray crystallography, while nano-structural materials were characterized by X-ray powder diffraction (XRPD) and scanning electron microscopy (SEM). Thermal stability of bulk and nano-sized particles of PBB was studied and compared with each other.Item Influence of the crystallization solvent on the molecular structures of copper(II) saccharinato complexes with pyridazine: Synthesis, X-ray crystallography, spectroscopy, photoluminescence, and thermal properties(Csiro Publishing, 2008-07-10) Şenel, Evrim; Kazak, Canan; Yılmaz, Veysel Turan; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; 7006269202X-Ray structural analysis has shown that the products of the reaction of [Cu(sac)(2)(H2O)(4)]center dot 2H(2)O (sac= saccharinate) with pyridazine (pydz) are markedly dependent on the solvent used in the crystallization. The mononuclear complex [Cu(sac)(2)(H2O)(pydz)(2)] is obtained by slow evaporation of a 1: 2 H2O/methanol solution at room temperature, whereas liquid-phase diffusion of diethyl ether into the same reaction solution produces the polymeric complex [Cu(mu-OH)(mu-sac)(mu-pydz)](n). The individual molecules of [Cu(sac)(2)(H2O)(pydz)(2)] are doubly bridged into dimers by O-H center dot center dot center dot O hydrogen bonds. All ligands in [Cu(sac)(2)(H2O)(pydz)(2)] are monodentate, whereas copper(II) ions in [ Cu(mu-OH)(mu-sac)(mu-pydz)] n are triply bridged by all ligands, leading to a one-dimensional chain structure, which is further assembled to form a three-dimensional framework by non-covalent p-p and CH-p stacking interactions. Complex [ Cu(sac)(2)(H2O)(pydz)(2)] is paramagnetic, whereas complex [Cu(mu-OH)(mu-sac)(mu-pydz)](n) exhibits a significantly low mu effective value due to very strong exchange coupling between the copper atoms with a relatively short Cu-Cu distance of 3.360(3) angstrom. In addition, the full spectroscopic, luminescence, and thermal properties of the complexes are reported.Item A novel two-dimensional silver(I) saccharinato coordination polymer constructed from weak Ag⋯C interactions: Synthesis, IR spectra and X-ray structure(Elsevier, 2008-12-15) Hamamcı, Sevim; Kazak, Canan; Yılmaz, Veysel Turan; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; 7006269202A new dinuclear silver(I)-saccharinato (sac) complex with acetonitrile (MeCN), [Ag-2(sac)(2)(MeCN)(2)](n) has been synthesized and characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction. The silver(I) ions are doubly bridged by two sac ligands, leading to a short argentophilic contact of 2.9074(3) angstrom. Each silver(I) ion exhibits a square-planar coordination geometry including the Ag-Ag bonds. The individual dimeric molecules are extended into a two-dimensional layered structure by weak Ag center dot center dot center dot Csac(eta(2)) interactions of ca. 3.2 angstrom. These interactions were discussed and compared with those found in the first silver(I)-sac complex [Ag(sac)](n).Item A one-dimensional pyrazine bridged Copper(II)-Saccharinato coordination polymer(Wiley-V C H Verlag, 2008) Şenel, Evrim; Kazak, Canan; Yılmaz, Veysel Turan; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; 7006269202A one-dimensional copper(II) complex {[Cu(sac)(2)(mu-pyz)(H2O)] center dot H2O}(n) (1) (pyz = pyrazine, and sac = saccharinate) has been synthesized and characterized by elemental analysis, IR spectroscopy, thermal and single crystal X-ray analyses. Complex 1 crystallizes in the triclinic space group P (1) over bar. The [Cu(sac)(2)(H2O)] units are bridged by pyz leading to a one-dimensional alternating chain in which the copper(II) ions exhibit a distorted square-pyramidal coordination of CuN4O. The intradimer Cu center dot center dot center dot Cu distance is 6.881 angstrom, while interdimer Cu center dot center dot center dot Cu distance is 7.066 angstrom. The supramolecular interactions are mainly controlled by the sac anion and water molecules. The individual chains are linked by strong OW-H center dot center dot center dot O(sac) hydrogen bonds into a two-dimensional layers, which are further arranged in a three-dimensional supramolecular network by aromatic pi(sac)center dot center dot center dot pi(sac) stacking interactions and CH center dot center dot center dot pi(pyz) interactions. Thermal analysis of complex 1 shows that the decompositions of the aqua, pyz and sac ligands are observed as distinct steps on the DTA and TG curves.Item Synthesis and characterization of one-dimensional coordination polymers, [M(sac)₂(mu-pyz)(H₂O)₂](n) [M=Zn(II), Cd(II), pyz =pyrazine, and sac = saccharinate](Taylor & Francis, 2008) Şenel, Evrim; Kazak, Canan; Yılmaz, Veysel Turan; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; 7006269202Two new coordination polymers, [M(sac)₂(mu-pyz)(H₂O)₂]n [M=Zn(II)(1), Cd(II)₂, pyz =pyrazine, and sac =saccharinate], have been prepared and characterized by elemental analysis, FTIR spectroscopy, thermal analysis and single crystal X-ray diffraction. Both complexes are isomorphous and crystallize in the triclinic P (1) over bar space group. The metal(II) ions are octahedrally coordinated by two sac, two aqua and two pyz ligands. The sac ligands are N-coordinated, while the pyz ligands are bridges between the metal centers, leading to one-dimensional linear chains. Intra-chain M-M separations in 1 and 2 are 7.218 and 7.498 angstrom, respectively. The individual chains are linked by strong OW-H center dot center dot center dot O(sac) hydrogen bonds into two-dimensional layers, which are further assembled into three-dimensional supramolecular networks by aromatic pi(sac)center dot center dot center dot pi(sac) stackings interactions.Item trans-Bis[2-(piperazin-1-yl)ethanamine]bis(saccharinato)cobalt(II)(Wiley Backwell, 2007-11-23) Güney, Serkan; Kazak, Canan; Yılmaz, Veysel Turan; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; 7006269202In the centrosymmetric title complex, [Co(C7H4NO3S)(2)(C6H15N3)(2)], the Co-II ion is coordinated by two saccharinate (sac) anions and two neutral 2-piperazin-1-ylethanamine (ppzea) ligands, showing a distorted octahedral coordination. Sac is O-bonded via the carbonyl group, while ppzea acts as an N,N'-bidentate chelating ligand. The molecules are connected by N-H center dot center dot center dot N and N-H center dot center dot center dot O hydrogen bonds, forming a linear chain running parallel to the crystallographic a axis. The compound is isostructural with the reported Ni, Zn, and Cd analogues.