ISSN:
1600-5759
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The structure of the lactone form of rhodamine B, 3,6-bis(diethylamino)-1′,3′-dihydrospiro[xanthene-9,3′-isobenzofuran]-1′-one, C28H30N2O3, has been determined at 120 K using synchrotron radiation at a wavelength of 0.496 Å. The structure contains two independent rhodamine B molecules with virtually identical geometry. The xanthene main planes of the molecules are inclined at an angle of 41.6 (2)° to one another. Molecule 2 has a statistically disordered ethyl group, with 71% in one orientation and 29% in a second orientation. The lactone C—O bonds are 1.497 (1) and 1.495 (1) Å. There are no classical hydrogen bonds, but the structure is stabilized by two short C...O interactions. The crystals of the lactone form were produced by a novel hydrothermal reaction.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0108270100008404
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