Abstract
The title compound, C35H38N4O3, was prepared as a spirolactam ring formation of rhodamine dye for comparison with a ring-opened form. The xanthene ring system is approximately planar. The dihedral angles formed by the spirolactam and phenol rings with the xanthene ring system are 85.7 and 109.4°, respectively. Each of the molecules in the crystal structure contains one intramolecular O—H⋯N hydrogen bond, and they form intermolecular N—H⋯O hydrogen-bonded chains along the [100] direction. Weak intermolecular C—H⋯O hydrogen-bonding contacts connect the infinite chains via crystallographic inversion centres to form a two-dimensional network.
Highlights
The title compound, C35H38N4O3, was prepared as a spirolactam ring formation of rhodamine dye for comparison with a ring-opened form
The dihedral angles formed by the spirolactam and phenol rings with the xanthene ring system are 85.7 and 109.4, respectively
Weak intermolecular C—HÁ Á ÁO hydrogen-bonding contacts connect the infinite chains via crystallographic inversion centres to form a two-dimensional network
Summary
The title and the chemical diagram of the paper by Zhang, Peng, Gao & Fan [Acta Cryst. In the paper by Zhang, Peng, Gao & Fan [Acta Cryst. The correct structure is shown below and the correct title of the original paper should be ‘[(2-{[30,60-Bis(ethylamino)20,70-dimethyl-3-oxospiro[1H-isoindole-1,90-9H-xanthen]-2-yl}ethyl)iminomethyl]phenol’. The title compound, C35H38N4O3, was prepared as a spirolactam ring formation of rhodamine dye for comparison with a ring-opened form. The dihedral angles formed by the spirolactam and phenol rings with the xanthene ring system are 85.7 and 109.4, respectively. Each of the molecules in the crystal structure contains one intramolecular O—HÁ Á ÁN hydrogen bond, and they form intermolecular N—HÁ Á ÁO hydrogen-bonded chains along the [100] direction. Weak intermolecular C—HÁ Á ÁO hydrogen-bonding contacts connect the infinite chains via crystallographic inversion centres to form a two-dimensional network. Related literature For related literature, see: Kwon et al (2005); Wu et al (2007); De Silva et al (1997)
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