Structural, spectral and thermal studies of N-2-(picolyl)-N′-4-chlorophenylthioureas
作者:Lisa F. Szczepura、Diantha R. Kelman、Anne K. Hermetet、Lily J. Ackerman、Karen I. Goldberg、Kacey A. Claborn、Werner Kaminsky、Douglas X. West
DOI:10.1016/s0022-2860(01)00966-8
日期:2002.5
N-2-(4-picolyl)-N'-4-chlorophenylthiourea, 4PicTu4ClPh, triclinic, P-1, a = 7.5235(3), b = 9.1585(5), c = 10.5158(7) Angstrom, alpha = 76.015(3), beta = 70.015(4), gamma = 82.010(4)degrees, V = 1309.8(2) Angstrom(3) and Z = 2; N-2-(5 -picolyl)-N'-4-chlorophenylthiourea, 5PicTu4ClPh, monoclinic, P2(1)/c, a = 15.139(2), b = 4.8386(3), c = 17.338(2) Angstrom, beta = 90.661(4)degrees, V = 1270.0(2) Angstrom(3) and Z = 4 and N-2-(6-picolyl)-N'-4-chlorophenylthiourea, 6PicTu4ClPh, monoclinic, C2/c, a = 33.520(6), b = 4.0750(3), c = 18.658(4) Angstrom, beta = 97.500(6)degrees, V = 2526.8(7) Angstrom(3) and Z = 8. The most striking difference between the structures of the three thioureas is the difference in planarity, and among the four N-2-(picolyl)-N'-4-chlorophenylthioureas, their values for DeltaH(fus). (C) 2002 Elsevier Science B.V. All rights reserved.