K. Mikami, Osamu Kotera, Yukihiro Motoyama
1998
Citations
0
Influential Citations
30
Citations
Journal
Inorganic Chemistry Communications
Abstract
Abstract The ytterbium(III) and yttrium(III) bis(trifluoromethanesulfonyl)amide complexes (1a and 1b) have been synthesized from the corresponding metal oxides and 3 equiv. of bis(trifluoromethanesulfonyl)imide in refluxing water, as highly effective catalysts for the Diels–Alder reaction. The X-ray crystal analysis of the ytterbium(III) bis(trifluoromethanesulfonyl)amide complex with N,N′-dimethylpropyleneurea (2a) recrystallized from N,N′-dimethylpropyleneurea and ethyl acetate reveals the mononuclear, hexa-coordinated and octahedral structure with six dimethylpropyleneureas.