(8)Annulene complexes of the lanthanides. [Dipotassium bis((8)annulene) ytterbate (II), dicalcium bis((8)annulene) ytterbate(II), and potassium bis((8)annulene) ytterbate(III)]
Thesis/Dissertation
·
OSTI ID:6269629
The divalent ytterbrium organometallic compound, dipotassium bis((8)annulene)ytterbate(II),1, and its divalent calcium analog, 2, have been synthesized and characterized. The crystal structure of the bis-dimethoxyethane adduct of 1 shows a centrosymmetric ytterbrium atom complexed by two (8)annulene rings. A potassium coordinated with a dimethoxyethane molecule is at the opposite side of each ring. A comparison of the infrared spectra and x-ray powder patterns of the bis-dimethoxyethane adducts of 1 and 2 indicate that the two complexes are isostructural and suggests that the ring-metal interaction in 1 is essentially ionic in nature. The trivalent ytterbrium(III) complex, potassium bis((8)annulene)ytterbate(III), 3, has also been synthesized. In tetrahydrofuran solution, an electron exchange reaction occurs between 1 and 3. The second order rate constant of this electron exchange is approx. = 10W moles s at -10C as determined from H-NMR data.
- Research Organization:
- California Univ., Berkeley (USA)
- OSTI ID:
- 6269629
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ADDUCTS
ALKALI METAL COMPLEXES
ALKALINE EARTH METAL COMPLEXES
AROMATICS
CALCIUM COMPLEXES
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
COHERENT SCATTERING
COMPLEXES
CONDENSED AROMATICS
CRYSTAL STRUCTURE
DATA
DIFFRACTION
ELECTRON EXCHANGE
ELECTRON TRANSFER
EXPERIMENTAL DATA
INFORMATION
INFRARED SPECTRA
KINETICS
MAGNETIC RESONANCE
MOLECULAR STRUCTURE
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
POTASSIUM COMPLEXES
POWDERS
RARE EARTH COMPLEXES
REACTION KINETICS
RESONANCE
SCATTERING
SPECTRA
SYNTHESIS
VALENCE
X-RAY DIFFRACTION
YTTERBIUM COMPLEXES
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ADDUCTS
ALKALI METAL COMPLEXES
ALKALINE EARTH METAL COMPLEXES
AROMATICS
CALCIUM COMPLEXES
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
COHERENT SCATTERING
COMPLEXES
CONDENSED AROMATICS
CRYSTAL STRUCTURE
DATA
DIFFRACTION
ELECTRON EXCHANGE
ELECTRON TRANSFER
EXPERIMENTAL DATA
INFORMATION
INFRARED SPECTRA
KINETICS
MAGNETIC RESONANCE
MOLECULAR STRUCTURE
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
POTASSIUM COMPLEXES
POWDERS
RARE EARTH COMPLEXES
REACTION KINETICS
RESONANCE
SCATTERING
SPECTRA
SYNTHESIS
VALENCE
X-RAY DIFFRACTION
YTTERBIUM COMPLEXES