Robert M. Edkins, Elliott Hayden, Jonathan W. Steed and Katharina Fucke
Chem. Commun., 2015,51, 5314-5317
DOI:
10.1039/C4CC10453F,
Communication
Two tetrahydocarbazolone derivatives were found to show multiple unsolvated crystal forms. A persistent dimer motif was detected in solution by FTIR spectroscopy that is maintained in the kinetic crystal forms. Rationally introduced steric bulk induces the formation of a more stable catemeric form.