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Paper | Regular issue | Vol 65, No. 4, 2005, pp.797-808
Published online, 1st March, 2005
DOI: 10.3987/COM-05-10322
Hydrogen Bonding and Conformation of 5-Substituted Dipyrromethanes — A Solid State Study

Mathias O. Senge

*Department of Chemistry, Trinity College Dublin, Dublin 2, Ireland


A crystallographic study of nine different meso-substituted dipyrromethanes identifies the main types of intra- and intermolecular hydrogen bonding pattern in this class of porphyrin building blocks. Most compounds form similar hydrogen-bonded dimers in the crystal but distinct differences in the dipyrromethane conformations are observed in dependence on the type of the meso substituent.