STRUCTURES OF CALCIUM DICARBIDE AND URANIUM DICARBIDE BY NEUTRON DIFFRACTION
Journal Article
·
· Journal of Chemical Physics (U.S.)
The C--- C dtstances of the C/sub 2/ groups in calcium dicarbide and uranium dicarbide have been determined by the powder neutron diffraction method. The C---C distance in calcium dicarbide is 1.20 plus or minus 0.01 A, equal to the triple bond C---C distance, but not 1.4 A as reported previously. Uranium dicarbide is isostructural with calcium dicarbide and has the C---C distance of 1.34 plus or minus 0.01 A essentially that of a C---C double bond. The interatomic distances in calcium dicarbide, uranium dicarbide, lanthanum dicarbide, and lanthanum sesquicarbide are discussed in connection with the electronic configuration of the C/sub 2/ group. (auth)
- Research Organization:
- Iowa State College, Ames
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-13-019884
- OSTI ID:
- 4220109
- Journal Information:
- Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Vol. Vol: 31; ISSN JCPSA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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