Structure and Magnetic Investigation of a Series of Rare Earth Heterospin Monometallic Compounds of Nitronyl Nitroxide Radical |
| |
| Authors: | Yuxiao Wang Zhe Fan Xiaoying Yin Shuping Wang Shutao Yang Jianjun Zhang Lina Geng Shikao Shi |
| |
| Institution: | 1. College of Chemistry & Material Science, Hebei Normal University, Shijiazhuang 050024, P. R. China;2. Experimental Center, Hebei Normal University, Shijiazhuang 050024, P. R. China |
| |
| Abstract: | Five rare earth heterospin complexes Ln(hfac)3(NITptBuPh)2], LnIII = Eu ( 1 ), Tb ( 2 ), Dy ( 3 ), Ho ( 4 ), Er ( 5 )] (hfac = hexafluoroacetylacetonate), were synthesized with the radical ligand NITptBuPh 2‐(4′‐tert‐butylphenyl)‐4, 4,5, 5‐tetramethylimidazoline‐1‐oxyl‐3‐oxide]. These complexes exhibit similar structures. All of them crystallize in the monoclinic space group P21/c, and consist of discrete mononuclear molecules. The central LnIII ion is eight‐coordinate with a distorted dodecahedral environment. The NITptBuPh radical acts as monodentate ligand towards LnIII ion through the NO group. The magnetic studies suggested weak antiferromagnetic interactions between LnIII ion and radicals in 1 , 3 , 4 , and 5 , but weak ferromagnetic interaction in 2 . |
| |
| Keywords: | Nitronyl nitroxide radical Lanthanides Crystal structure Magnetic properties |
|
|
