Title of article :
Crystal structure determination as part of an undergraduate laboratory experiment: 1′,3′,3′-trimethylspiro[chromene-2,2′-indoline] and 1′,3′,3′-trimethyl-4-[(E)-(1,3,3-trimethylindolin-2-ylidene)methyl]spiro[chroman-2,2′-indoline]
Author/Authors :
Beckett, Joseph O. S. Department of Chemistry - University of California, USA , Olmstead, Marilyn M. Department of Chemistry - University of California, USA , Fettinger, James C. Department of Chemistry - University of California, USA , . Gray, David A Department of Chemistry - University of California, USA , Manabe, Shuhei Department of Chemistry - University of California, USA , Mascal, Mark Department of Chemistry - University of California, USA
Abstract :
The crystal structures of the title compounds, C19H19NO and C31H34N2O, were determined as part of an experiment in an undergraduate teaching laboratory that demonstrates the relationship between molecular structure and function. 1′,3′,3′-Trimethylspiro[chromene-2,2′-indoline] is both a photoswitch and thermochromic molecule. Students synthesized it and a bis-indoline adduct and compared the crystallographically determined structures to computed gas-phase models.
Keywords :
crystal structure , undergraduate teaching laboratory , spiropyran
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
