TY - JOUR
T1 - Metal Ion Binding to Calixarenes: Pendent Arm Coordination Assisted by Self-Inclusion
AU - Harrowfield, J.M.
AU - Mocerino, M.
AU - Skelton, Brian
AU - Whitaker, C.R.
AU - White, Allan
PY - 1994
Y1 - 1994
N2 - The synthesis and room-temperature single-crystal X-ray structural characterization of 25,27-di(allyloxy)-5,17-di-t-butyl-26,28-dimethoxycalix[4]arene are recorded. Crystals are monoclinic, C 2/c, a 29.089(5), b 10.742(2), c 26.218(8) angstrom, beta 110.09(2)-degrees, Z = 8; the structure was refined to a residual of 0.065 for 4103 independent 'observed' [I > 3sigma,(I)] reflections. The flattened partial cone conformation of the molecule allows inclusion of one of the methoxy substituents in a way which could block inclusion of a metal ion capable of polyhapto aromatic coordination and which may therefore explain why solution n.m.r. measurements indicate that silver(I) binds to the pendent alkene groups.
AB - The synthesis and room-temperature single-crystal X-ray structural characterization of 25,27-di(allyloxy)-5,17-di-t-butyl-26,28-dimethoxycalix[4]arene are recorded. Crystals are monoclinic, C 2/c, a 29.089(5), b 10.742(2), c 26.218(8) angstrom, beta 110.09(2)-degrees, Z = 8; the structure was refined to a residual of 0.065 for 4103 independent 'observed' [I > 3sigma,(I)] reflections. The flattened partial cone conformation of the molecule allows inclusion of one of the methoxy substituents in a way which could block inclusion of a metal ion capable of polyhapto aromatic coordination and which may therefore explain why solution n.m.r. measurements indicate that silver(I) binds to the pendent alkene groups.
U2 - 10.1071/CH9941185
DO - 10.1071/CH9941185
M3 - Article
VL - 47
SP - 1185
EP - 1192
JO - Australian Journal of Chemistry:an international journal for chemical science
JF - Australian Journal of Chemistry:an international journal for chemical science
SN - 0004-9425
ER -