An investigation of molecular structures of sulfonylcalix[4]arene, mercaptosulfonylcalix[4]arene and aminosulfonylcalix[4]arene, their proton affinities and complexation with zinc(II)

Banchob WannoVithaya RuangpornvisutiMahidol University2018-08-202018-08-202006-04-17Journal of Molecular Structure. Vol.787, No.1-3 (2006), 76-89002228602-s2.0-33646138728https://repository.li.mahidol.ac.th/handle/123456789/23165The geometrical structures of sulfonylcalix[4]arene, mercaptosulfonylcalix[4]arene, aminosulfonylcalix[4]arene, their complexes with zinc were obtained using density functional method at the B3LYP/6-31G(d) level of theory. The relative energies of the B3LYP/6-31G(d)-optimized structures were computed at the B3LYP/6-311G(d,p) level. The relative stabilities of the four typical conformers are in decreasing orders: partial cone>cone>1,2-alternate>1,3-alternate for sulfonylcalix[4]arene, 1,3-alternate>partial cone>1,2-alternate>cone for mercaptosulfonylcalix[4]arene and 1,3-alternate>partial cone>cone>1,2-alternate for aminosulfonylcalix[4]arene. Proton affinities of cone conformer of sulfonylcalix[4]arene, mercaptosulfonylcalix[4]arene and aminosulfonylcalix[4]arene were computed at B3LYP/6-31G(d) level of theory. The stability of zinc complexes of cone conformers of sulfonylcalix[4]arene derivatives is in decreasing order: mercaptosulfonylcalix[4]arene>sulfonylcalix[4]arene>aminosulfonylcalix[4]arene. © 2005 Elsevier B.V. All rights reserved.Mahidol UniversityChemistryAn investigation of molecular structures of sulfonylcalix[4]arene, mercaptosulfonylcalix[4]arene and aminosulfonylcalix[4]arene, their proton affinities and complexation with zinc(II)ArticleSCOPUS10.1016/j.molstruc.2005.11.006