Research Article: Tris­(nitrato-κ2O,O′)bis[4,4,5,5-tetra­methyl-2-(pyridin-2-yl-κN)imidazoline-1-oxyl 3-oxide-κO]holmium(III)

Date Published: May 01, 2012

Publisher: International Union of Crystallography

Author(s): Dong-Jiao Li.


In the title compound, [Ho(NO3)3(C12H16N3O2)2], the HoIII ion is ten-coordinated in a distorted bicapped square-anti­prismatic environment by two N,O-bidentate nitronyl nitroxide radical ligands and three O,O′-bidentate nitrate anions. Complex mol­ecules are connected by C—H⋯O hydrogen bonds into a three-dimensional network.

Partial Text

For background on the use of rare earth complexes with nitroxide radicals in coordination chemistry, see: Sutter et al. (1998 ▶); Kahn et al. (2000 ▶); Lescop et al. (2000 ▶). For related complexes reported by our group, see: Li et al. (2005 ▶); Li, Gao & Liao (2004 ▶); Li, Wang & Liao (2004 ▶).