title: Isolated [Ni(2)H(7)](7-) and [Ni(4)H(12)](12-) ions in La(2)MgNi(2)H(8).
authors.affiliation: Laboratoire de Cristallographie, Université de Genève, Quai Ernest Ansermet 24, 1211 Genève 4, Switzerland.
authors.forename: Jean-Noël
authors.initials: JN
authors.lastname: Chotard
authors.forename: Yaroslav
authors.initials: Y
authors.lastname: Filinchuk
authors.forename: Bernard
authors.initials: B
authors.lastname: Revaz
authors.forename: Klaus
authors.initials: K
authors.lastname: Yvon