Preferred head-to-tail adduct in solid-state [2+2] photodimerization of 2-pyrone-5-carboxylic acid.
Tetsuro Shimo, Mitsuhito Matsushita, Weidong Wang, Tetsuo Iwanaga, Teruo Shinmyozu, Kenichi Somekawa
Analytical Sciences: X-ray Structure Analysis Online
21
169
170