- 著者
-
Iwamoto Hajime
Hori Kenji
Fukazawa Yoshimasa
- 出版者
- Elsevier
- 雑誌
- Tetrahedron (ISSN:00404020)
- 巻号頁・発行日
- vol.62, no.12, pp.2789-2798, 2006-03-20
- 被引用文献数
-
12
A new simple model of porphyrin ring current effect was proposed based on a line current approximation. It can reproduce the porphyrin-induced shifts for several Sn(IV)(tpp) and Sn(IV)(oep) dicarboxylate complexes quite satisfactorily. Perpendicular arrangement of the aromatic rings in the diaromatic-carboxylate complexes of Sn(IV)(tpp) and Sn(IV)(oep) was clarified with this porphyrin ring current effect model. There are two structures, exo and endo, in solution in dinaphthalene-1- and 2- carboxylate complexes of Sn(IV)(tpp) and Sn(IV)(oep). The exo conformer is in dynamic equilibrium with the endo form in solution. Thermodynamic data of these conformational equilibria are given.