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Communication | Special issue | Vol 90, No. 1, 2015, pp.104-107
Published online, 24th March, 2014
DOI: 10.3987/COM-14-S(K)17
Crystal Structures of 3-Methylpyrrolo[2,3-b]tropone and Its Copper(II) Complex

Kanji Kubo,* Taisuke Matsumoto, Keiko Ideta, and Akira Mori

*Department of Life Science and Technology, Faculty of Engineering, Hokkai-Gakuen Univiersity, Sapporo, Hokkaido 062-8605, Japan


The crystal structures of 3-methylpyrrolo[2,3-b]tropone (1) and its Cu(II) complex (12Cu) were analyzed by X-ray crystallography. The structure of 1 exists in the crystal in its keto form rathar than in the enol form (1’). Pyrrolotropone (1) formed a 2:1 complex with Cu(II). The Cu(II) ion has a tetragonal environment formed by two tropone O atoms and two pyrrole N atoms.