Crystal structures of two azo compounds, 2-methyl-2-(4-bromphenylazo)-1,3-indandione and 2-methyl-2-(4-ethoxyphenylazo)-1,3-indandione

Ozbey S. , KENDI E.

JOURNAL OF CHEMICAL CRYSTALLOGRAPHY, cilt.25, sa.11, ss.787-790, 1995 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 25 Konu: 11
  • Basım Tarihi: 1995
  • Doi Numarası: 10.1007/bf01670337
  • Sayfa Sayıları: ss.787-790


In the two title compounds, the 2-methyl-1,3-dioxoindan-2-yl and 4-(brom; ethoxy) phenyl groups are trans with respect to one another. The phenyl ring and the azo group are not coplanar in the two molecules. The five-membered rings of the two compounds adopt an envelope conformation. The crystallographic parameters are as follows: 2-Methyl-2-(4-bromphenylazo)-1,3-indandione (I): monoclinic, P2(1)/a with a = 8.098(2), b = 14.442(2), c 12.554(1)Angstrom, beta = 100.55(2)degrees, and D-calc, = 1.58 g cm(-3) for Z = 4; 2-methyl-2-(4-ethoxyphenylazo)-1, 3-indandione (II): monoclinic, P2(1)/a with a 8.258(2), b = 14.449(1), c = 13.559(2)Angstrom, beta = 101.19(1)degrees, and D-calc = 1.29 g cm(-3) for Z = 4.