Aquatris[1-(2,4-dioxo-2H-1-benzopyran-3-ylidene)ethan-1-olato]ethanolgadolinium(III) ethanol monosolvate

• Main Authors: Laura Gasque, Óscar Guzmán-Méndez, Sylvain Bernès
• Format: Article
• Language: English
• Published: International Union of Crystallography 2019-04-01
• Series: IUCrData
• Subjects: crystal structure; lanthanide; gadolinium; solvate
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S2414314619004930

The title compound, [Gd(C11H7O4)3(C2H5OH)(H2O)]·C2H5OH, was crystallized from ethanol, affording a solvate. The main ligand in the complex results from deprotonation of the hydroxy group in 3-acetyl-4-hydroxycoumarin (C11H8O4) and the resulting anionic ligands chelate the GdIII centre. Three anions, one ethanol and one water molecule are bonded to the lanthanide, giving an eight-coordinate metal centre with a slightly distorted trigonal–prismatic square-face-bicapped coordination geometry. All water and ethanol molecules participate in an intricate three-dimensional framework of hydrogen bonds. The complex is isostructural to the Tb and Dy compounds reported previously [Guzmán-Méndez et al. (2018). Inorg. Chem. 57, 908–911].