Crystal structure of Cs/sup +/((XeOF/sub 4/)/sub 3/F)/sup -/ and vibrational study of the /sup 18/O-enriched (XeOF/sub 5/)/sup -/ and ((XeOF/sub 4/)/sub 3/F)/sup -/ anions
The cesium salts of the anions (XeOF/sub 5/)/sup -/ and ((XeOF/sub 4/)/sub 3/F)/sup -/ have been prepared and characterized. The Raman spectra of Xe/sup 16/OF/sub 5//sup -/ and Xe/sup 18/OF/sub 5//sup -/ are consistent with a stereochemically active lone pair in the xenon valence shell that results in a distorted octahedral arrangement of five fluorine and one oxygen around xenon to give C/sub s/ symmetry. The X-ray structure of Cs/sup +/((XeOF/sub 4/)/sub 3/F)/sup -/ has been obtained. Crystals are cubic, space group Pa3 with a = 13.993 (7) A and Z = 8. The structure was solved by means of Patterson and Fourier synthesis and refined by the least-squares method to R = 0.0969 and R/sub w/ = 0.0960 for 355 reflections. The anion possesses C/sub 3/ symmetry and consists of octahedra of O=XeF/sub 4/E (E = lone electron pair; mean XeF = 1.90 (3) A; Xe=O = 1.70 (5) A) linked through three fluorine bridges with the trigonally bonded fluorine positioned 0.49 A above the plane defined by the three xenon atoms. The Raman spectra of the /sup 16/O//sup 18/O isotopic isomers of (XeOF/sub 4/)/sub 3/F)/sup -/ and their associated coupling patterns have been interpreted on the basis of the X-ray structure. 33 references, 6 figures, 5 tables.
- Research Organization:
- The Univ., Leicester, England
- OSTI ID:
- 5491708
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 24:5; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPLEXES
ANIONS
BOND LENGTHS
CESIUM COMPLEXES
CHARGED PARTICLES
CHEMICAL BONDS
CHEMICAL PREPARATION
COHERENT SCATTERING
COMPLEXES
CRYSTALLOGRAPHY
DATA
DIFFRACTION
DIMENSIONS
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
FLUORINE COMPOUNDS
HALOGEN COMPOUNDS
INFORMATION
IONS
ISOTOPE ENRICHED MATERIALS
ISOTOPES
LENGTH
LIGANDS
LIGHT NUCLEI
MATERIALS
NUCLEI
NUMERICAL DATA
OXYGEN 18
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
RAMAN SPECTRA
RARE GAS COMPOUNDS
SALTS
SCATTERING
SPECTRA
STABLE ISOTOPES
STEREOCHEMISTRY
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
VALENCE
VIBRATIONAL STATES
X-RAY DIFFRACTION
XENON COMPOUNDS