Structural evidence for xenon--chlorine bonding: neutron and x-ray diffraction determinations of the structure of cesium and rubidium trioxodichloroxenate(VI) chloride, Cs/sub 9/(XeO/sub 3/Cl/sub 2/)/sub 4/Cl and Rb/sub 9/(XeO/sub 3/Cl/sub 2/)/sub 4/Cl
The compounds XeO/sub 3/ . 2.25 CsCl and XeO/sub 3/ . 2.25 RbCl have been structurally characterized as cesium and rubidium trioxodichloroxenate(VI) chloride, M/sub 9/(XeO/sub 3/Cl/sub 2/)/sub 4/Cl, using single-crystal counter diffraction methods. The crystals are body-centered tetragonal, point group 4/m, with a = 16.56 A and c = 7.10 A for the Cs salt and a = 15.97 A and c = 6.91 A for the Rb salt, and contain eight XeO/sub 3/ . 2.25 MCl formula units per unit cell. The structures have been refined in the space group I anti 4 to R factors of 8.3% for the Cs compound using neutron data and 10.4% for the Rb compound using x-ray data. The crystal structures contain infinite chains, parallel to c, of XeO/sub 3/Cl/sup -/ units linked by nearly linear chlorine bridges. The metal cations and one-ninth of the chlorine atoms are separated from the repeating polymeric unit XeO/sub 3/Cl/sub 2//sup 2 -/ by nonbonding distances. The xenon coordination is octahedral (distorted) with three terminal oxygen neighbors (in the Cs salt) at 1.77 A, one terminal Cl neighbor at 2.96 A, and two bridging Cl neighbors at 2.95 and 2.97 A.
- Research Organization:
- Argonne National Lab., IL
- OSTI ID:
- 5241856
- Journal Information:
- J. Am. Chem. Soc.; (United States), Vol. 99:25
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CESIUM COMPOUNDS
CRYSTAL STRUCTURE
RUBIDIUM COMPOUNDS
XENON COMPLEXES
CHEMICAL BONDS
CHLORINE COMPOUNDS
NEUTRON DIFFRACTION
OXYGEN COMPOUNDS
STRUCTURAL CHEMICAL ANALYSIS
X-RAY DIFFRACTION
ALKALI METAL COMPOUNDS
COHERENT SCATTERING
COMPLEXES
DIFFRACTION
HALOGEN COMPOUNDS
SCATTERING
400201* - Chemical & Physicochemical Properties