@article{9d7c5996e82346f4b3e55361e2438474,
title = "Preparation and spin-spin interaction of 4,4′(anthracene-1,8-diyl)bis(1-methyl-2,6-diphenylpyridinyl)",
abstract = "4,4′-(Anthracene-1,8-diyl)bis(1-methyl-2,4,6-triphenylpyridinylyl) (2) which was prepared by 3%-Na-Hg reduction of the corresponding dication was found to be singlet in the ground state, the triplet state lies very little (12.5 cal/mol) above the singlet state.",
author = "Keiji Okada and Kouzou Matsumoto and Masaji Oda and Hisao Murai and Kimio Akiyama and Yusaku Ikegami",
note = "Funding Information: Acknowledgement. This work was supported by grants (No. 05453031 and 05403007) from Ministry of Education, ScIence and Culture, Japan. References and Notes 1. Present address; Department of Chemistry, Faculty of Science, Tohoku University, Ararnaki Aoba, Aoba ku, Sendai 980. 2. S. Akiyama. S. Misumi. and M. Nakagawa., Bull. Chem. Soc. lpn., 1961.32, 1826-1836. 3. I-Methyl-2,4,6-triphenylpyridinium monocation shows reduction waves at -1.02 V (cation to radical) and -1.65 V (radical to anion). Judging from these values and little broader waves for the reduction of 22+, tworeductionwavesobservedfor12 + are due to two electron reduction processes in both cases. 4 This hypothesis is compatible with the AMI calculation for l,8-dimethyleneanthracene; the calculation indicates that the triplet energy is strongly dependent on the torsion angIe between the methylenes and anthracene planes; K. Okada, K. Matsumoto, M. Oda. H. Murai, K. Akiyama, Y. Ikegami, to be published. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",
year = "1995",
doi = "10.1016/00404-0399(50)1262-G",
language = "English",
volume = "36",
pages = "6693--6694",
journal = "Tetrahedron Letters",
issn = "0040-4039",
publisher = "Elsevier Limited",
number = "37",
}