title: Formation and Reactivity of a Molecular Magnesium Hydride with a Terminal Mg-H Bond.
abstract: A complex featuring a terminal magnesium hydride bond supported by an NNNN macrocyclic ligand, [Mg{Me3 TACD⋅Al(iBu)3}H] (3), was formed from its labile Al(iBu)3 adduct. Use of Al(iBu)3 to block the amido nitrogen of the NNNN macrocyclic ligand was essential to prevent aggregation. The structurally characterized compound 3 reacted with BH3 to give the BH4 derivative, whereas Me3 SiCCH and PhSiH3 led to the corresponding acetylide and silyl derivative under H2 elimination. Pyridine is inserted into the MgH bond to give selectively the 1,4-dihydropyridinate.
authors.affiliation: RWTH Aachen University, Institute of Inorganic Chemistry, Landoltweg 1, 52056 Aachen (Germany).
authors.forename: Silvia
authors.initials: S
authors.lastname: Schnitzler
authors.affiliation: RWTH Aachen University, Institute of Inorganic Chemistry, Landoltweg 1, 52056 Aachen (Germany).
authors.forename: Thomas P
authors.initials: TP
authors.lastname: Spaniol
authors.affiliation: Université de Toulouse et CNRS, INSA, UPS, UMR 5215 LPCNO, 135 avenue de Rangueil, 31077 Toulouse (France).
authors.forename: Laurent
authors.initials: L
authors.lastname: Maron
authors.affiliation: RWTH Aachen University, Institute of Inorganic Chemistry, Landoltweg 1, 52056 Aachen (Germany). jun.okuda@ac.rwth-aachen.de.
authors.forename: Jun
authors.initials: J
authors.lastname: Okuda
keywords: hydrides; hydrogen; macrocyclic ligands; magnesium; terminal bonds