NMR study of molecular reorientation under fivefold symmetry: solid permethylferrocene

Journal Article · Wed Jan 14 00:00:00 EST 1981 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00391a006· OSTI ID:6875738

Wemmer, D E; Ruben, D J; Pines, A

The ring reorientation in permethylferrocene has been studied by using high-resolution solid-state /sup 13/C NMR. The constraints which symmetry places upon the number and types of motional parameters which may be determined from the NMR spectrum are discussed. From comparison of the experimental line shapes in the slow reorientation temperature range with theoretical models for random rotations and symmetry-related jumps, it is concluded that the reorientation occurs as jumps between symmetry-related orientations with jumps of 2..pi../5 highly favored over 4..pi../5. The activation energy derived for the jump process is 13.5 kJ/mol.

• Research Organization: Univ. of California, Berkeley, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6875738
• Journal Information: J. Am. Chem. Soc.; (United States), Vol. 103:1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DIENES
NMR SPECTRA
IRON COMPLEXES
LOW TEMPERATURE
NUCLEAR MAGNETIC RESONANCE
ROTATION
SOLIDS
SPECTROSCOPY
COMPLEXES
HYDROCARBONS
MAGNETIC RESONANCE
MOTION
ORGANIC COMPOUNDS
POLYENES
RESONANCE
SPECTRA
TRANSITION ELEMENT COMPLEXES
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)
400201 - Chemical & Physicochemical Properties