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The reactions between magnesium or zinc alkyls and 1,8-bis(triorganosilyl)diaminonaphthalenes afford the 1,8-bis(triorganosilyl)diamidonaphthalene complexes with elimination of alkanes. The reaction between 1,8-C 10 H 6 (NSiMePh 2 H) 2 and one or two equivalents of Mg n Bu 2 affords two complexes with differing coordination environments for the magnesium; the reaction between 1,8-C 10 H 6 (NSiMePh 2 H) 2 and Mg n Bu 2 in a 1 : 1 ratio affords 1,8-C 10 H 6 (NSiMePh 2 ) 2 {Mg(THF) 2 } (1), which features a single magnesium centre bridging both ligand nitrogen donors, whilst treatment of 1,8-C 10 H 6 (NSiR 3 H) 2 (R 3 = MePh 2 , i Pr 3 ) with two equivalents of Mg n Bu 2 affords the bimetallic complexes 1,8-C 10 H 6 (NSiR 3 ) 2 { n BuMg(THF)} 2 (R 3 = MePh 2 2, R 3 = i Pr 3 3), which feature four-membered Mg 2 N 2 rings. Similarly, 1,8-C 10 H 6 (NSi i Pr 3 ) 2 {MeMg(THF)} 2 (4) and 1,8-C 10 H 6 (NSiMePh 2 ) 2 {ZnMe} 2 (5) are formed through reactions with the proligands and two equivalents of MMe 2 (M = Mg, Zn). The reaction between 1,8-C 10 H 6 (NSiMePh 2 H) 2 and two equivalents of MeMgX affords the bimetallic complexes 1,8-C 10 H 6 (NSiMePh 2 ) 2 (XMgOE 2 ) 2 (X = Br 6; X = I 7). Very small amounts of [1,8-C 10 H 6 (NSiMePh 2 ) 2 {IMg(OE 2 )}] 2 (8), formed through the coupling of two diamidonaphthalene ligands at the 4-position with concomitant dearomatisation of one of the naphthyl arene rings, were also isolated from a solution of 7.

1,8-Bis(silylamido)naphthalene complexes of magnesium and zinc synthesised through alkane elimination reactions