The reactions of hexachlorocyclotriphosphazatriene, N3P3Cl6, with N/O donor-type N-alkyl-o-hydroxybenzyl- and o-hydroxynaphthylamines result in novel mono-(3a, 4a and 4b), di- (5a and 5b), and tri- (3b, 6a, and 6b) spirocyclic ...
We present a comprehensive picture of structural and electronic properties of the TiC(001)(1 x 1) surface. Our investigations are based on first-principles calculations within the local-density approximation of the ...
Bağcı, Sadık; Tütüncü, Hüseyin Murat(ELSEVIER SCIENCE BV, 2007)
We use an ab initio pseudopotential method within the local-density approximation to determine the structural and electronic properties of the BeSe(1 1 0) surface. The relaxed geometry of this surface shows tilted cation-anion ...
The title compound, [Co(C7H4FO2)2(C6H6N2O)2(H2O)2], is a three-dimensional hydrogen-bonded supramolecular complex. The CoII ion resides on a centre of symmetry and is in an octahedral coordination environment comprising ...
In the title compound, C20H15Cl2N3O2, intramolecular C-H...O hydrogen bonding causes the formation of a planar six-membered ring, which is also coplanar with the adjacent furan ring. The benzimidazole ring system is also ...
The asymmetric unit of the title compound, C14H13NO2, contains two independent molecules. In the indole ring system, the benzene and pyrrole rings are nearly coplanar, the dihedral angles being 0.48 (17) and 1.26 (17)degrees. ...
In the crystal structure of the title compound, C18H17N3O4, intramolecular C - H center dot center dot center dot O hydrogen bonds cause the formation of two planar five-membered rings, which are also coplanar with the ...
In the molecule of the title compound, C20H16N2O2, the planar benzimidazole system is oriented with respect to the furan and phenyl rings with dihedral angles of 87.41 (10) and 61.65 (5)degrees, respectively. In the crystal ...
In the molecule of the title compound, C15H13N3O, intramolecular C-H center dot center dot center dot O hydrogen bonding causes the formation of a planar five-membered ring. The oxime unit has an E configuration. In this ...
Tütüncü, Hüseyin Murat(TAYLOR & FRANCIS LTD, 2007)
The phonon spectrum, phonon linewidths and electron-phonon coupling parameter for YS have been calculated by using a first-principles scheme, based on the application of the plane-wave pseudopotential method, density ...
The results of investigations low frequency dielectric relaxation in layered ferroelectric TlInS2 crystals are presented. The measurements were performed in the temperature range of 180-230 K and in the frequency range of ...
We have studied the lattice dynamics of the GaAs(001)-beta(2)(2x4) surface by employing two theoretical methods: an ab initio pseudopotential method and a phenomenological adiabatic bond-charge method. Both methods predict ...
The title complex, [Co(C7H4BrO2)(2)(C6H6N2O)(2)(H2O)(2)], is monomeric and centrosymmetric, and contains two water molecules, two 4-bromobenzoate (BB) anions and two nicotinamide (NA) ligands, all acting as monodentate ...
Özdemir, Leyla; H Karal(PERGAMON-ELSEVIER SCIENCE LTD, 1999)
Term energies, ionization energies, inner-shell energy differences and oscillator strengths for some atoms and ions have been calculated within the framework of H-F with relativistic corrections. The wave functions and ...
The molecular geometry and vibrational frequencies of 1-(thiophen-2-yl-methyl)-2-(thiophen-2-yl)-1H-benzimidazole (C16H12N2S2) in the ground state has been calculated using the Hartree-Fock (HF) and density functional ...
Tütüncü, Hüseyin Murat; Bağcı, Sadık(IOP PUBLISHING LTD, 2007)
The electronic structures and elastic constants of LaSb and YSb are calculated using an ab initio pseudopotential scheme within the generalized gradient approximation. In agreement with experimental studies, it has been ...
The molecular geometry and vibrational frequencies of N-phenyl-AP-(2-thienyimethylene)hydrazine (C11H10N2S) have been calculated using Hartree-Fock and density functional method (B3LYP) with 6-31G(d) basis set. The optimized ...
The molecular geometry and vibrational frequencies of melaminium citrate in the ground state have been calculated using the Hartree-Fock (HF) and density functional method (B3LYP) with 6-31G(d) basis set. The optimized ...
Complex Impedance Spectroscopy has been employed for the study of absorption kinetics at TIGaSe2 layered crystal under Bias voltage at room temperature. Two relaxations mechanisms have been observed. The crystal has "slow" ...
Tosun, Murat; Güngör, Mehmet Ali; Okur, İbrahim(ASME, 2007)
In this paper we have introduced one-parameter Lorentzian spherical motion. In addition to that, we have given the relations between the absolute, relative, and sliding velocities of these motions. Furthermore, the relations ...