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Bis[4-(methylamino)benzoato-?O]bis(nicotinamide-?N)zinc(II)
(Int Union Crystallography, 2009) Tercan, Baris; Hoekelek, Tuncer; Aybirdi, Oezguer; Necefoglu, Hacali
The title zinc complex, [Zn(C8H8NO2)(2)(C6H6N2O)(2)], is composed of two monodentate 4-(methylamino) benzoate and two monodentate nicotinamide ligands. The coordination around the Zn atom is distorted tetrahedral. The dihedral angles between the two benzene rings and the two pyridine rings are 78.30 (6) and 68.86 (5)degrees. In the crystal structure, intermolecular N-H center dot center dot center dot O hydrogen bonds link the molecules into an infinite three-dimensional network.
Bis[?-4-(dimethylamino)benzoato]-?3O,O?:O;?3O:O,O?-bis{aqua[4-(dimethylamino)benzoato-?2O,O?](nicotinamide-?N1)cadmium(II)}
(Wiley-Blackwell, 2010) Hokelek, Tuncer; Suzen, Yasemin; Tercan, Baris; Aybirdi, Oezguer; Necefoglu, Hacali
[No abstract available]
catena-Poly[[[diaquabis[4-(diethylamino)benzoato-?O]manganese(II)]-?-aqua] dihydrate]
(Int Union Crystallography, 2009) Hoekelek, Tuncer; Dal, Hakan; Tercan, Baris; Aybirdi, Oezguer; Necefoglu, Hacali
In the crystal structure of the title complex, {[Mn(C11H14NO2)(2)(H2O)(3)]center dot 2H(2)O}(n), the two independent Mn-II atoms are located on a centre of symmetry and coordinated by two 4-(diethylamino) benzoate (DEAB) anions and two water molecules in the basal plane while another water molecule bridges the Mn atoms in the apical directions, forming polymeric chains. The dihedral angles between the carboxylate groups and the adjacent benzene rings are 11.33 (13) and 10.90 (9)degrees and the benzene rings are oriented at a dihedral angle of 67.88 (6)degrees. The uncoordinated water molecules link the carboxylate groups and coordinated water molecules via O-H center dot center dot center dot O hydrogen bonding. Weak C-H center dot center dot center dot pi interactions are also found in the crystal structure.
Diaquabis(4-methylaminobenzoato-?O)bis(nicotinamide-?N1)cobalt(II)
(Wiley-Blackwell, 2010) Necefoglu, Hacali; Aybirdi, Oezguer; Tercan, Baris; Ermis, Emel; Hokelek, Tuncer
The asymmetric unit of the title Co-II complex, [Co(C8H8NO2)(2)(C6H6N2O)(2)(H2O)(2)], contains two half complex molecules with similar structures. The Co-II atoms are each located on an inversion center and each is coordinated by two 4-methylaminobenzoate (PMAB), two nicotinamide (NA) ligands and two water molecules in a distorted octahedral coordination. The dihedral angles between the carboxylate groups and the adjacent benzene rings are 3.0 (3) and 2.54 (19)degrees, while the pyridine and benzene rings are oriented at dihedral angles of 67.40 (8) and 66.25 (8)degrees. In the crystal structure, intermolecular O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds link the molecules into a supramolecular structure.
Diaquabis(4-methylaminobenzoato-?O)bis(nicotinamide-?N1)nickel(II)
(Int Union Crystallography, 2009) Hokelek, Tuncer; Dal, Hakan; Tercan, Baris; Aybirdi, Oezguer; Necefoglu, Hacali
The title Ni-II complex, [Ni(C8H8NO2)(2)(C6H6N2O)(2)(H2O)(2)], is centrosymmetric with the Ni atom on an inversion center. The molecule contains two 4-methylaminobenzoate (MAB) and two nicotinamide (NA) ligands and two coordinated water molecules, all ligands being monodentate. The four O atoms in the equatorial plane around the Ni atom form a slightly distorted square-planar arrangement, while the slightly distorted octahedral coordination is completed by the two N atoms of the NA ligands in the axial positions. The dihedral angle between the carboxylate group and the adjacent benzene ring is 2.09 (14)degrees, while the pyridine and benzene rings are oriented at a dihedral angle of 66.15 (4)degrees. In the crystal structure, intermolecular O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds link the molecules into a three-dimensional network.
Diaquabis(N,N-diethylnicotinamide-?N1)bis[4-(dimethylamino)benzoato-?O]cobalt(II)
(Int Union Crystallography, 2009) Hokelek, Tuncer; Dal, Hakan; Tercan, Baris; Aybirdi, Oezguer; Necefoglu, Hacali
The title Co-II complex, [Co(C9H10NO2)(2)(C10H14N2O)(2)-(H2O)(2)], is centrosymmetric. It contains two dimethylaminobenzoate (DMAB) and two diethylnicotinamide (DENA) ligands and two water molecules, all of them being monodentate. The four O atoms in the equatorial plane around the Co atom form a slightly distorted square-planar arrangement, while the slightly distorted octahedral coordination is completed by the two pyridine N atoms of DENA ligands with the Co-N distance of 2.1519 (11) angstrom in the axial positions. The Co atom is displaced out of the least-squares plane of the carboxylate group by -0.781 (1) angstrom. The dihedral angle between the carboxylate group and the adjacent benzene ring is 5.05 (7)degrees, while the pyridine and benzene rings are oriented at a dihedral angle of 71.48 (5)degrees. In the crystal structure, intermolecular O-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds link the molecules into a three-dimensional network. Two weak C-H center dot center dot center dot pi interactions are also present.
Diaquabis(N,N-diethylnicotinamide-?N1)bis[4-(dimethylamino)benzoato-?O]nickel(II)
(Int Union Crystallography, 2009) Hoekelek, Tuncer; Suezen, Yasemin; Tercan, Baris; Aybirdi, Oezguer; Necefoglu, Hacali
The centrosymmetric title Ni-II complex, [Ni(C9H10NO2)(2)-(C10H14N2O)(2)(H2O)(2)], contains two dimethylaminobenzoate (DMAB), two diethylnicotinamide (DENA) ligands and two water molecules, all of them monodentate. The four O atoms in the equatorial plane around the Ni-II atom form a slightly distorted square-planar arrangement, while the slightly distorted octahedral coordination is completed by the two pyridine N atoms of the DENA ligands in axial positions. The Ni-II atom is displaced by 0.681 (1) angstrom out of the least-squares plane of the carboxylate group. The dihedral angle between the carboxylate group and the adjacent benzene ring is 5.61 (7)degrees, while the pyridine and benzene rings are oriented at a dihedral angle of 73.20 (4)degrees. An intramolecular O-H center dot center dot center dot O hydrogen bond results in the formation of a six-membered ring with a twisted conformation. In the crystal structure, intermolecular O-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds link molecules into a three-dimensional network. Two weak C-H center dot center dot center dot pi interactions are also present.
Diaquabis[4-(dimethylamino)benzoato-?O](isonicotinamide-?N1)manganese(II)
(Int Union Crystallography, 2009) Hokelek, Tuncer; Dal, Hakan; Tercan, Baris; Aybirdi, Oezguer; Necefoglu, Hacali
The title Mn-II complex, [Mn(C9H10NO2) (2)(C6H6N2O)(H2O)(2)], contains two 4-(dimethylamino) benzoate (DMAB) anions, one isonicotinamide (INA) ligand and two coordinated water molecules. One of the DMAB anions acts as a bidentate ligand, while the other is monodentate. The four O atoms in the equatorial plane around the Mn atom form a highly distorted square-planar arrangement, while the distorted octahedral coordination geometry is completed by the N atom of the INA ligand and the O atom of the second water molecule in the axial positions. In the crystal structure, strong intermolecular O-H center dot center dot center dot O, O-H center dot center dot center dot N and N-H center dot center dot center dot O hydrogen bonds link the molecules into a two-dimensional network parallel to (010). Two weak C-H center dot center dot center dot pi interactions are also found.
Diaquabis[4-(dimethylamino)benzoato]-?2O,O?;?O-(isonicotinamide-?N1)cobalt(II)
(Int Union Crystallography, 2009) Hokelek, Tuncer; Dal, Hakan; Tercan, Baris; Aybirdi, Oezguer; Necefoglu, Hacali
The title Co-II complex, [Co(C9H10NO2)(2)(C6H6N2O)(H2O)(2)], contains two 4-dimethylaminobenzoate (DMAB) anions, one isonicotinamide (INA) ligand and two coordinated water molecules. One of the DMAB anions acts as a bidentate ligand, while the other is monodentate. The four O atoms in the equatorial plane around the Co atom form a highly distorted square-planar arrangement, while the distorted octahedral coordination geometry is completed by the N atom of the INA ligand and the O atom of the second water molecule in the axial positions. An intramolecular O-H center dot center dot center dot O hydrogen bond between the monodentate-coordinated carboxyl group and a coordinated water molecule results in a six-membered ring with an envelope conformation. The dihedral angles between the carboxyl groups and the adjacent benzene rings are 4.29 (10)degrees for the monodentate ligand and 2.31 (13)degrees for the bidentate ligand, while the two benzene rings are oriented at a dihedral angle of 65.02 (5)degrees. The dihedral angles between the pyridine and benzene rings are 11.21 (5)degrees for the monodentate ligand and 74.60 (5)degrees for the bidentate ligand. In the crystal structure, intermolecular O-H center dot center dot center dot O, O-H center dot center dot center dot N and N-H center dot center dot center dot O hydrogen bonds link the molecules into a supramolecular structure.
Tetrakis[?-4-(diethylamino)benzoato-?2O:O?]bis[(N,N-diethylnicotinamide-?N1)zinc(II)]
(Int Union Crystallography, 2009) Hoekelek, Tuncer; Yilmaz, Filiz; Tercan, Baris; Aybirdi, Oezguer; Necefoglu, Hacali
In the centrosymmetric binuclear title complex, [Zn-2(C11H14NO2)(4)(C10H14N2O)(2)], the two Zn-II ions [Zn center dot center dot center dot Zn = 2.8874 (3) angstrom] are bridged by four 4-(diethylamino)benzoate (DEAB) ligands. The four nearest O atoms around each Zn-II ion form a distorted square-planar arrangement, the distorted square-pyramidal coordination being completed by the pyridine N atom of an N,N-diethylnicotinamide (DENA) ligand at a distance of 2.0484 (12) angstrom. The dihedral angle between the benzene ring and the carboxylate group is 4.89 (6)degrees in one of the independent DEAB ligands and 7.13 (7)degrees in the other. The benzene rings of the two independent DEAB ligands are oriented at a dihedral angle of 86.58 (5)degrees. The pyridine ring is oriented at dihedral angles of 31.17 (4) and 58.38 (4)degrees with respect to the two benzene rings. In the crystal, weak intermolecular C-H center dot center dot center dot O interactions link the molecules into a three-dimensional network. Two weak C-H center dot center dot center dot pi interactions are also present. The two ethyl groups of one of the DEAB ligands are disordered over two orientations, with occupancy ratios of 0.798 (5): 0.202 (5) and 0.890 (5): 0.110 (5).
Tetrakis[?-4-(dimethylamino)benzoato-?2O:O?]bis[(N,N-diethylnicotinamide-?N1)zinc(II)]
(Int Union Crystallography, 2009) Hokelek, Tuncer; Dal, Hakan; Tercan, Baris; Aybirdi, Oezguer; Necefoglu, Hacali
The title molecule, [Zn-2(C9H10NO2)(4)(C10H14N2O)(2)], is a centrosymmetric binuclear complex, with Zn atoms [Zn center dot center dot center dot Zn ' = 2.8927 (4) angstrom] bridged by four carboxylate groups from the dimethylaminobenzoate (DMAB) ligands. The four carboxyl O atoms around the Zn atom form a distorted square-planar arrangement; the distorted square-pyramidal coordination geometry is completed by the pyridine N atom of the N,N-diethylnicotinamide (DENA) ligand. The Zn atom is displaced by 0.3326 (2) angstrom from the plane of the four O atoms, with an average Zn-O distance of 2.0416 (12) angstrom. The dihedral angles between the carboxylate groups and the adjacent benzene rings are 5.31 (8) and 11.00 (9)degrees, while the pyridine ring is oriented at dihedral angles of 66.26 (6) and 37.88 (7)degrees with respect to the benzene rings. Weak intramolecular C-H center dot center dot center dot O and intermolecular C-H center dot center dot center dot pi interactions are present.
Tetrakis[?-4-(methylamino)benzoato-?2O:O?]bis[(N,N-diethylnicotinamide-N1)zinc(II)] dihydrate
(Int Union Crystallography, 2009) Hokelek, Tuncer; Yilmaz, Filiz; Tercan, Baris; Aybirdi, Oezguer; Necefoglu, Hacali
The title molecule, [Zn-2(C8H8NO2)(4)(C10H14N2O)(2)]center dot 2H(2)O, is a centrosymmetric binuclear complex, with two Zn-II ions [Zn center dot center dot center dot Zn' = 2.9301 (4) angstrom] bridged by four methylaminobenzoate (MAB) ligands. The four nearest O atoms around each Zn-II ion form a distorted square-planar arrangement with the distorted square-pyramidal coordination completed by the pyridine N atom of the N,N-diethylnicotinamide (DENA) ligand. Each Zn-II ion is displaced by 0.3519 (2) angstrom from the plane of the four O atoms, with an average Zn-O distance of 2.030 angstrom. The dihedral angles between carboxylate groups and adjacent benzene rings are 10.57 (10) and 16.63 (12)degrees, while the benzene rings are oriented at a dihedral angle of 81.84 (5)degrees. The pyridine ring is oriented at dihedral angles of 40.49 (6) and 51.25 (6)degrees with respect to the benzene rings. In the crystal structure, intermolecular O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds link the molecules into a three-dimensional network. The pi-pi contact between the inversion-related pyridine rings [centroid-centroid distance = 3.633 (1) angstrom] may further stabilize the crystal structure.

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