TY - JOUR
T1 - 5,17-Bis(acetamido-25,26,27,28-tetrapropoxycalix[4]arene; the first example of two different pinched cone conformations in the solid state
AU - Verboom, Willem
AU - Vreekamp, Remko H.
AU - Bodewes, Paul J.
AU - Harkema, Sybolt
AU - Reinhoudt, David N.
PY - 1996
Y1 - 1996
N2 - Crystals of 5,17‐bis(acetamido)‐25,26,27,28‐tetrapropoxycalix[4]arene · ethyl‐acetate (1: 1), C44H54N2O6 · C4H8O2 are triclinic, space group P‐1, a = 13.319(4), b = 15.519(4), c = 22.386(6) Å, α = 104.73(3), β = 99.02(3), γ = 95.30(3)°, T = 100(5) K, Z = 4. The asymmetric unit contains two calix[4]arene molecules and two ethyl acetate molecules. The two calix[4]arene molecules have different pinched cone conformations. The phenyl rings show small but consistent boat‐like deformations. The final R factor is 7.9%.
AB - Crystals of 5,17‐bis(acetamido)‐25,26,27,28‐tetrapropoxycalix[4]arene · ethyl‐acetate (1: 1), C44H54N2O6 · C4H8O2 are triclinic, space group P‐1, a = 13.319(4), b = 15.519(4), c = 22.386(6) Å, α = 104.73(3), β = 99.02(3), γ = 95.30(3)°, T = 100(5) K, Z = 4. The asymmetric unit contains two calix[4]arene molecules and two ethyl acetate molecules. The two calix[4]arene molecules have different pinched cone conformations. The phenyl rings show small but consistent boat‐like deformations. The final R factor is 7.9%.
U2 - 10.1002/recl.19961150904
DO - 10.1002/recl.19961150904
M3 - Article
SN - 0165-0513
VL - 115
SP - 402
EP - 406
JO - Recueil des travaux chimiques des Pays-Bas
JF - Recueil des travaux chimiques des Pays-Bas
IS - 9
ER -