J 2002

The conformational behaviour of thiacalix[4]arenes: the pinched cone/pinched cone transition

ČAJAN, Michal, Pavel LHOTÁK, Jan LANG, Hana DVOŘÁKOVÁ, Ivan STIBOR et. al.

Basic information

Original name

The conformational behaviour of thiacalix[4]arenes: the pinched cone/pinched cone transition

Authors

ČAJAN, Michal (203 Czech Republic), Pavel LHOTÁK (203 Czech Republic), Jan LANG (203 Czech Republic), Hana DVOŘÁKOVÁ (203 Czech Republic), Ivan STIBOR (203 Czech Republic) and Jaroslav KOČA (203 Czech Republic, guarantor)

Edition

Journal of the chemical society. Perkin transactions II, Physical organic chemistry, London, Chemical society, 2002, 1472-779X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10403 Physical chemistry

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.911

RIV identification code

RIV/00216224:14310/02:00006564

Organization unit

Faculty of Science

Keywords in English

calix[4]arene; conformation; transition; DFT
Změněno: 21/5/2003 15:45, prof. RNDr. Jaroslav Koča, DrSc.

Abstract

V originále

This work is focused on the dynamics and thermodynamics of the pinched cone-pinched cone interconversion of calix[4]arenes. The behaviour of methylene bridged non-substituted tetraalkoxycalix[4]arene and its tetraalkoxythiacalix[4]arene analogue is compared. Energetic and structural changes during this interconversion have been closely studied by HF and DFT quantum chemistry methods in combination with temperature -dependent 1 H NMR spectroscopy. The most important stationary points-minima and transition states on the potential energy surface have been identified and their symmetry and other structural properties have been determined.

Links

MSM 143100005, plan (intention)
Name: Strukturně-funkční vztahy biomolekul a jejich role v metabolismu
Investor: Ministry of Education, Youth and Sports of the CR, Biomolecular Structure-function Relationships and their role in the Metabolism