title: Cesium hydroperoxostannate: first complete structural characterization of a homoleptic hydroperoxocomplex.
abstract: The crystal structure of cesium hexahydroperoxostannate Cs(2)Sn(OOH)(6) is presented. The compound was characterized by single crystal and by powder X-ray diffraction, FTIR, (119)Sn MAS NMR, and TG-DTA. Cs(2)Sn(OOH)(6) crystallizes in the trigonal space group P3, a = 7.5575(4), c = 5.1050(6) A, V = 252.51(4) A(3), Z = 1, R(1) = 0.0120 (I > 2sigma(I)), wR(2) = 0.0293 (all data), and comprises cesium cations and slightly distorted octahedral [Sn(OOH)(6)](2-) anions lying on the threefold axis. The [Sn(OOH)(6)](2-) unit forms 12 interanion hydrogen bonds resulting in anionic chains spread along the c-axis. All six hydroperoxo ligands are crystallographically equivalent; O-O distances are 1.482(2), only slightly longer than the O-O distance in hydrogen peroxide. FTIR and (119)Sn MAS NMR reveal the similarity between all alkali hydroperoxostannates.
authors.affiliation: Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii prosp.31, Moscow 119991, Russia.
authors.forename: Andrei V
authors.initials: AV
authors.lastname: Churakov
authors.forename: Sergey
authors.initials: S
authors.lastname: Sladkevich
authors.forename: Ovadia
authors.initials: O
authors.lastname: Lev
authors.forename: Tatiana A
authors.initials: TA
authors.lastname: Tripol'skaya
authors.forename: Petr V
authors.initials: PV
authors.lastname: Prikhodchenko