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), Vol. 24:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CESIUM COMPLEXES
CHEMICAL PREPARATION
CRYSTALLOGRAPHY
STRUCTURAL CHEMICAL ANALYSIS
FLUORINE COMPOUNDS
OXYGEN COMPOUNDS
XENON COMPOUNDS
ANIONS
BOND LENGTHS
CHEMICAL BONDS
EXPERIMENTAL DATA
ISOTOPE ENRICHED MATERIALS
LIGANDS
OXYGEN 18
RAMAN SPECTRA
SALTS
STEREOCHEMISTRY
VALENCE
VIBRATIONAL STATES
X-RAY DIFFRACTION
ALKALI METAL COMPLEXES
CHARGED PARTICLES
COHERENT SCATTERING
COMPLEXES
DATA
DIFFRACTION
DIMENSIONS
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
HALOGEN COMPOUNDS
INFORMATION
IONS
ISOTOPES
LENGTH
LIGHT NUCLEI
MATERIALS
NUCLEI
NUMERICAL DATA
OXYGEN ISOTOPES
RARE GAS COMPOUNDS
SCATTERING
SPECTRA
STABLE ISOTOPES
SYNTHESIS
400201* - Chemical & Physicochemical Properties