(n = 0 or 1) from HSi(SiMe3)3 (δSi in C6D6 = -11.6 ppm, SiMe3; -115.6 ppm, HSi) correlates with the paramagnetic line broadening being relatively minor in the M(THF)n (n = 0 or 1) series herein, which delivers the first examples of M(III)-bound solution Si DEPT90 NMR resonances for all of the paramagnetic M herein to the best of our knowledge (we note that a signal was tentatively assigned for the silanide atom in [La(Cp′′)2{Si(SiMe3)3}] at δSi = -130.25 ppm, but data from correlation experiments were ambiguous). 41