... 2 Department of Chemistry, Kwangwoon University, Seoul 139-701, Republic of Korea. 3 ... Heteroatom Chem 23:66–73, 2012; View this article online at wileyonlinelibrary.com. ... 2 Koptyug, VA Atlas of Spectra of Aromatic and Heterocyclic Compounds; Akademiya Nauk SSSR ...