Ferromagnetically coupled linear electron-transfer complexes. Structural and magnetic characterization of (Cr(. eta. ) sup 6 -C sub 6 Me sub x H sub 6-x sup 2 )(TCNE) (x = 0, 3, 6) and S = 0 (TCNE) sub 2 sup 2 minus
Journal Article
·
· Journal of the American Chemical Society; (USA)
- E.I. du Pont de Nemours and Co., Wilmington, DE (USA)
- Ohio State Univ., Columbus (USA)
The reaction of Cr{sup 0}(C{sub 6}Me{sub x}H{sub 6-x}){sub 2} (x = 0, 3, 6), D, with TCNE, A, results in formation of 1:1 electron-transfer salts of (Cr{sup 1}(C{sub 6}Me{sub x}H{sub 6-x}){sub 2})(TCNE) (x = 0, 3, 6) composition. The x = 0 and 3 complexes have been structurally characterized. The magnetic susceptibility between 2 and 320 K for these (TCNE){sub 2}{sup 2{minus}} complexes can be fit by the Curie-Weiss law, {chi} = C/(T-{theta}), for one independent per spin repeat unit. Charge-transfer excitation from the next highest occupied molecular orbital is consistent with the stabilization of ferromagnetic coupling for this system. Thus, other molecular/organic systems with {sup 2}A ground states might be suitable components for a bulk ferromagnet.
- OSTI ID:
- 6724280
- Journal Information:
- Journal of the American Chemical Society; (USA), Journal Name: Journal of the American Chemical Society; (USA) Vol. 111:20; ISSN 0002-7863; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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Tue Jan 18 23:00:00 EST 2000
· Journal of the American Chemical Society
·
OSTI ID:20017329
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Journal Article
·
Tue May 22 20:00:00 EDT 1990
· Journal of the American Chemical Society; (USA)
·
OSTI ID:6611922
Electron-transfer chemistry of the 20-electron complex (Fe sup 0 (C sub 6 Me sub 6 ) sub 2 ) and of the 19-electron complex (Fe sup I (C sub 6 Me sub 6 )(. eta. sup 5 -C sub 6 Me sub 6 H)): Mild C-H activation by O sub 2 via superoxide ion and functionalization of the exocyclic methylenes in the resulting complexes (Fe sup 0 (C sub 6 Me sub 6 )(. eta. sup 4 -polyene))
Journal Article
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Sun Jul 01 00:00:00 EDT 1990
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·
OSTI ID:6379583
Related Subjects
36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
CALCULATION METHODS
CHROMIUM COMPLEXES
COMPLEXES
CRYSTAL STRUCTURE
DATA
DATA ANALYSIS
ELECTRON TRANSFER
EXPERIMENTAL DATA
FERROMAGNETIC MATERIALS
INFORMATION
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
PHYSICAL PROPERTIES
TRANSITION ELEMENT COMPLEXES
360104 -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
CALCULATION METHODS
CHROMIUM COMPLEXES
COMPLEXES
CRYSTAL STRUCTURE
DATA
DATA ANALYSIS
ELECTRON TRANSFER
EXPERIMENTAL DATA
FERROMAGNETIC MATERIALS
INFORMATION
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
NUMERICAL DATA
PHYSICAL PROPERTIES
TRANSITION ELEMENT COMPLEXES