Yazar "Kiliç, Z" seçeneğine göre listele

Listeleniyor 1 - 4 / 4
  • Küçük Resim Yok
    Öğe
    2,4,4,6,6-Pentachloro-2-(2,6-di-tert-butyl-4-methylphenoxy)cyclo-2?5,4?5,6?5-triphosphazatriene
    (Munksgaard Int Publ Ltd, 1999) Hökelek, T; Kiliç, A; Begeç, S; Kiliç, Z
    The title compound, C15H23Cl5N3OP3, consists of a non-planar trimeric phosphazene ring and a bulky 2,6-di-tert-butyl-4-methylphenoxy side group in which the phenyl ring shows a small but significant distortion from planarity. The bulky group predominantly determines the molecular shape. The endocyclic angle about the P atom bonded to the substituent is decreased, while the exocyclic angle is increased. The situation is not similar to that of tetrameric phosphazene derivatives.
  • Küçük Resim Yok
    Öğe
    Crystal structure of 2,4,4,6,6-pentachloro-2-(2,4,6-trimethylphenoxy)cyclo-2?5,4?5,6?5-triphosphazatriene
    (Japan Soc Analytical Chem, 2000) Hökelek, T; Akduran, N; Kiliç, A; Begeç, S; Kiliç, Z
    [Abstract Not Available]
  • Küçük Resim Yok
    Öğe
    N-[bis(2,4,6-trimethylphenoxy)phos-phinoyl]-P,P,P-tris(2,4,6-trimethyl-phenoxy)phosphazene
    (Int Union Crystallography, 2000) Höekelek, T; Akduran, N; Begeç, S; Kiliç, A; Kiliç, Z
    The title compound, C45H55NO6P2, consists of an acyclic P=N-P(O) monophosphazene chain and five bulky 2,4,6-trimethylphenoxy side groups which predominantly determine the molecular shape. Although the P-N single [1.586 (3) Angstrom] and P=N double [1.517 (3) Angstrom] bonds are significantly different from each other, both are substantially shorter than the ideal P-N single bond. The P-N-P angle [146.0 (2)degrees] corresponds to the upper limit reported for acyclic phosphazene derivatives in the literature.
  • Küçük Resim Yok
    Öğe
    Phosphorus-nitrogen compounds
    (Elsevier Science Bv, 2000) Kiliç, A; Begeç, S; Kiliç, Z; Hökelek, T
    The reactions of Cl3P=N-P(O)Cl-2 (1) with Sodium 2,4,6-tert-butylphenoxide and sodium 2,6-di-tert-butyl-4-methylphenoxide give geminal bis products (2) and (3), respectively. Compounds (2) and (3) have been characterised by elemental analysis, IR, H-1-, C-13 and P-31-NMR and the structure of compound (2) has been examined crystallographically. It crystallizes in the monoclinic space group P2(1)/n with a = 10.056(1), b = 25.986(1), c = 15.533(1)Angstrom, beta = 95.9(1)degrees, V = 4037.6(1)Angstrom(3), Z = 4 and D-x = 1.19 g cm(-3). The bulky substituents are instrumental in determining the molecular geometry. The P-N bonds have neither single-nor double-bond character and are substantially shorter than the ideal P-N single bond. The P=O double bond is abnormally long and it has a single bond character. The P-N-P angle [158.0(3)degrees] is the largest one for the reported acyclic phosphazene derivatives in the literature. (C) 2000 Elsevier Science B.V. All rights reserved.