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

Pages

16

From page

1

To page

16

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

Serial Year

2016

Full Text URL

journals.iucr.org/e/issues/2016/11/00/hb7609/hb7609.pdf

Record number

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]

2619401

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]