Home Physical Sciences Crystal structure of 5-(p-bromophenyl)-N,N-bis(2-chloroethyl)-2-furamide
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Crystal structure of 5-(p-bromophenyl)-N,N-bis(2-chloroethyl)-2-furamide

Published/Copyright: August 25, 2010
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Abstract

5-(p-bromophenyl)-N,N-bis(2-chloroethyl)-2-furamide belongs to so-called “N-mustards”, the compounds showing biological and pharmacological activities. It crystallizes in the monoclinic space group P21/n with unit cell parameters a = 20.347(6), b = 10.405(3), c = 7.693(2) Å, β = 95.52(2)°; V = 1621.1(8) Å3, Mr = 391.088 (C15H14BrCl2NO2), Z = 4, Dx = 1.602 gcm−3; λ(Mo) = 0.7107 Å, μ = 28.43 cm−1; F(000) = 784, T = 293 K. The structure was solved by the heavy-atom method and refined to R = 0.041 for 1157 observed reflections. Furan and benzene rings are inclined with each other by 12.6(2)°. Exocyclic bond angles at the furan C(2) as well as at the C(5) atom differ markedly: the C-C-C angles [127.7(7), 133.6(7)°] are larger than the corresponding O-C-C angles [122.7(7), 117.7(6)°]. Such significant differences, common for furan compounds, may be due to possible hybridization effects at the C(2) and C(5) furan atoms. The N-chloroethyl groups are antiperiplanar with the N-C-C-Cl torsion angles of 176.6(5) and −176.3(5)°.

Published Online: 2010-08-25
Published in Print: 1990

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