TY - JOUR
T1 - Deprotonation of Large Calixarenes-Cation Binding and Conformations
AU - Harrowfield, J.M.
AU - Koutsantonis, George A.
AU - Ogden, Mark I.
AU - Sobolev, Alexandre N.
AU - White, Allan H.
PY - 2016
Y1 - 2016
N2 - © 2016 CSIRO.Single crystal X-ray studies of p-t-butylcalix[10]arene·2dmso·7H2O (1) and [NMe4][p-t-butylcalix[9]arene-H]·2dmso·H2O (2), provide new data on these large macrocycles and their conformations, that of 2 being the first where an encapsulated [NMe4]+ cation is present, while 1 contains the neutral ligand. Both were obtained as crystalline products of the reactions of the calixarenes with tetramethylammonium hydroxide after prolonged standing. The structure of [NEt4][calix[4]arene-H], in which the cation approaches inclusion in the shallow cone of the anion, is also defined and compared with various other alkylammonium derivatives of calixarenes as well as that of p-t-butylcalix[9]arene.
AB - © 2016 CSIRO.Single crystal X-ray studies of p-t-butylcalix[10]arene·2dmso·7H2O (1) and [NMe4][p-t-butylcalix[9]arene-H]·2dmso·H2O (2), provide new data on these large macrocycles and their conformations, that of 2 being the first where an encapsulated [NMe4]+ cation is present, while 1 contains the neutral ligand. Both were obtained as crystalline products of the reactions of the calixarenes with tetramethylammonium hydroxide after prolonged standing. The structure of [NEt4][calix[4]arene-H], in which the cation approaches inclusion in the shallow cone of the anion, is also defined and compared with various other alkylammonium derivatives of calixarenes as well as that of p-t-butylcalix[9]arene.
U2 - 10.1071/CH15761
DO - 10.1071/CH15761
M3 - Article
VL - 69
SP - 546
EP - 554
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
IS - 5
ER -