Monocationic complexes of yttrium with various bis-alkyl and bis-allyl ligands Y(CH2SiMe2Ph)2(THF)4][B(C6F5)4], [Y(CH2C6H4NMe2)2(THF)2][B(C6F5)4], [Y[1,3-(SiMe3)2C3H3]2(THF)2][B(C6F5)4] have be...

Lewis acidic (BDI)Ae+ cations of the heavier metals Sr and Ba, which are not stabilized by polar solvents, have been obtained double deprotonation (BDI)H2+ with either SrN’’2 or BaN’’2; BDI = HC[C(Me)N(DIPP)]2, DIPP 2,6-diisopropylphenyl, Ae alkaline earth, N’’ N(SiMe3)2. Due to clathrate formation [(BDI)Ae+][B(C6F5)4−] could be crystallized, but pyrene addition gave crystalline [(BDI)Ae+ ⋅ pyr...