Abstract
From reactions involving M{N(SiMe3)2}3 (M = La, Pr and Eu) and triflurotertiary butano[(CF3)Me2COH; tftb.H], the compounds [La(tftb)3(thf)1.5] (1), [Pr(tftb)3 (2) and [Eu(tftb)3] (3) have been isolated. From variable temperature 1H and 19F NMR studies it is suggested that 1 is a mixture of [La3(tftb)9(thf)2] (1a) and [La2(tftb)6(thf)4] (1b). X-ray crystallography has shown that 2 is the trimer [Pr3(tftb)9] and variable temperature 1H and 19F NMR suggests that 3 is also a trimer, [Eu3(tftb)9].
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