title: Facile high-yield synthesis of pure, crystalline Mg(BH4)2.
abstract: Magnesium borohydride, Mg(BH4)2, a long-sought candidate for efficient hydrogen storage chemisorption technology, has been obtained in a pure and crystalline form by two new synthetic routes in a hydrocarbon solvent. A first synthetic approach involves a metathetical reaction between organometallic magnesium compounds; a second route consists of an insertion reaction of BH3 species, released from BH3.S(CH3)2, into the Mg-C bonds of MgR2, with complete replacement of R groups with BH4 groups. Both methods, based on commercially available reagents, afford identical, pure, polycrystalline materials, identified by X-ray diffraction as the so-called low-temperature hexagonal form of Mg(BH4)2, stable below 180 degrees C, recently shown to possess a complex, unpredictable, crystal structure.
authors: CNR-ICIS, corso Stati Uniti 4, 30127 Padua, Italy. p.zanella@icis.cnr.it
authors: Pierino
authors: P
authors: Zanella
authors: Laura
authors: L
authors: Crociani
authors: Norberto
authors: N
authors: Masciocchi
authors: Giovanni
authors: G
authors: Giunchi