Potassium tris magnesiate

A variety of alkali metal and metallocene-containing magnesium amides are known. Thus, attempted metallation of ferrocene using potassium tris(amido)magnesiate KMg N-(SiMe3)2 3 unexpectedly led to n-coordination of neutral ferrocene moieties to a pota-... 

A novel potassium tris(amido) magnesiate [(PMDETA)KMg (NPh2)3(THF)] 69 (Fig. 43) was prepared by combining an equimolar mixture of benzylpotassium and di-n-butylmagnesium with three molar equivalents of diphenylamine in the presence of THF and PMDETA. 

Two novel potassium tris(amido) magnesiates, namely, [ (—)-sparteine K+ Mg(HMDS)3 ] 70 and [ (R,R)-TMCDA K" Mg(HMDS)3n 71 (Fig. 44) can be prepared from equimolar mixtures of KHMDS and Bu2Mg reacted with two further molar equivalents of HMDS(H) in a hydrocarbon medium with the corresponding addition of the chiral donor (—)-sparteine... 

Fleming BJ, Garcia-Alvarez P, Keating E, Keimedy AR, O Hara CT. Synthesis and structural elucidation of a rare example of a tris(amido) potassium magnesiate. Inorg Chim Acta. 2012 384 154-157. 

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