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    Crystal structure of 2-(3-amino-2,4,4-tricyano-buta-1,3-dienyl)-thiophene
    (Wiley-V C H Verlag Gmbh, 2000) Akkurt, Mehmet; Payze, Zuhal; Kepez, Mustafa
    The title compound (C11H6N4S) crystallizes in the orthorhombic space group Pbca with a = 23.561(4) Angstrom, b = 7.064(1) Angstrom, c = 13.018(3) Angstrom, Z = 8; D-x = 1.387(1) g.cm(-3); R = 0.073 for 1697 observed reflections [F-2 greater than or equal to 2 sigma(F-2)]. The interesting feature is disorder in the crystal structure resulting from the existence of two isomeric molecules with interchangable carbon and sulfur positions, occuring at random but with equal probability in the structure.
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    Structure of 2-(2 '-cyano-2 '-ethoxycarbonylethylenyl)-pyridine
    (Oldenbourg Verlag, 1998) Öztürk, Sema; Akkurt, Mehmet; Kendi, Engin; Kepez, Mustafa
    C11H10N2O2 crystallizes triclinically, space group , Z = 2; a = 8.261(1) Angstrom, b = 8.478(1) Angstrom, c = 8.470(1) Angstrom, alpha = 72.49(1)degrees, beta = 89.58(1)degrees, gamma = 67.56(1)degrees, R = 0.068 for 549 observed reflections [I greater than or equal to 2 sigma(1)]. The molecule of the title compound is nearly planar. The dihedral angle between the weighted least-squares plane through the non-Il atoms of the pyridine ring (maximum deviation from planarity 0.012(2) Angstrom) and the weighted least squares plane through the remaining non-H atoms of the molecule (maximum deviation from planarity 0.027(2) Angstrom) is 3.91(5)degrees.
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    Structure of 2-(2?-cyano-2?-ethoxycarbonylethylenyl)-pyridine
    (1998) Öztürk, Sema; Akkurt, Mehmet; Kendi, Engin; Kepez, Mustafa
    C11H10N2O2 crystallizes triclinically, space group P1?, Z = 2; a = 8.261(1) Å, b = 8.478(1) Å, c = 8.470(1) Å, ? = 72.49(1)°, ? = 89.58(1)°, ? = 67.56(1)°, R = 0.068 for 549 observed reflections [I ? 2?(I)]. The molecule of the title compound is nearly planar. The dihedral angle between the weighted least-squares plane through the non-H atoms of the pyridine ring (maximum deviation from planarity 0.012(2) Å) and the weighted least squares plane through the remaining non-H atoms of the molecule (maximum deviation from planarity 0.027(2) Å) is 3.91(5)°.