@article{5a540ca9c5a24cd984f0d6b866c28df0,
title = "A conformational study of [3.3](3,5)pyridinophane",
abstract = "A variable temperature 1H NMR study of the [3.3](3,5)pyridinophane indicated that the syn(chair/chair) is more stable than syn(chair/boat) by 0.2 kcal/mol in solution, whereas the trimethylene bridges show disorder even at -150 °C in the solid state. A transition state search by ab initio MO calculations suggested two competitive conformational changes for syn(chair/chair)-syn(chair/boat) conversion via a bridge wobble or a ring inversion in the [3.3](3,5)pyridinophane.",
author = "Masahiko Shibahara and Motonori Watanabe and Masahiko Suenaga and Keiko Ideta and Taisuke Matsumoto and Teruo Shinmyozu",
note = "Funding Information: We are indebted to Professor Takahiko Inazu for his helpful suggestions. T.S. wishes to thank the Theme Project (Professor Tahsin J. Chow), Institute of Chemistry, Academia Sinica, Taiwan R.O.C. for the financial support of this work. We are also grateful for the financial support by a Grant-in-Aid for Scientific Research (B) (No. 18350025) from the Ministry of Education, Culture, Sports, Science and Technology, Japan. The computations were mainly carried out using the computer facilities at the Research Institute for Information Technology, Kyushu University. ",
year = "2009",
month = mar,
day = "25",
doi = "10.1016/j.tetlet.2009.01.051",
language = "English",
volume = "50",
pages = "1340--1344",
journal = "Tetrahedron Letters",
issn = "0040-4039",
publisher = "Elsevier Limited",
number = "12",
}