Crystal structure of hydrazone form of 1-butyl-3-cyano-6-hydroxy-4-methyl-5-(2-thiazolylazo)-2-(1H)-pyridone

TEMEL A., Ozbey S. , ERTAN N.

DYES AND PIGMENTS, cilt.32, sa.4, ss.237-244, 1996 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 32 Konu: 4
  • Basım Tarihi: 1996
  • Doi Numarası: 10.1016/s0143-7208(96)00028-9
  • Sayfa Sayıları: ss.237-244


The structural results clearly indicate that 1-butyl-3-cyano-6-hydroxy-4-methyl-5-(2-thiazolylazo)-2(1H)-pyridone, (C14H15N5O2S) exists primarily as the hydrazone tautomer in the solid state. The molecule is nearly planar not regarding the butyl group. Some of the bond lengths and angles are distorted due to pi-electron delocalization and strain. A strong intramolecular N-H ... O hydrogen bond was found [N ... O = 2.53(1)Angstrom]. The crystallographic parameters are as follows: triclinic , a = 5.972(4)Angstrom, b = 7.732(5)Angstrom, c = 17.348 (9) Angstrom, alpha = 85.62(5)degrees, beta = 79.24(6)degrees, gamma = 78.41(7)degrees, V = 770.4(9)Angstrom(3) Z=2, D-c = 1.37 g cm(-3), mu(MoKalpha) = 2.1 cm(-1), R = 0.045, G.O.F. = 1.78. Copyright (C) 1996 Elsevier Science Ltd