Scandium carbides

Scandium (Sc), 14 630, 651t Scandium carbide, 4 648, 649t Scanners, mri, 23 858 Scanning... 

Up to 1999, only metal atoms [1-5], metal clusters [6,7], metal nitrides [55-57], and noble gas atoms [58-60] were observed to be encaged inside C60, C70, or various sizes of higher fullerenes. The experimental evidence for carbon atoms or metal-carbon compounds (carbides) being encapsulated inside fullerenes had not yet been observed. In 2000, Shinohara et al. succeeded in the first production, isolation, and spectroscopic characterization of a scandium carbide endohedral fullerene (Sc2C2) C84. Following this, the first experimental evidence based on synchrotron X-ray diffraction was presented and revealed that the Sc carbide is encapsulated in the form of a lozenge-shaped Sc2C2 cluster inside the D2d-C84 fullerene [8]. 

Poettgen, Rainer, and Jeitschko, Wolfgang (1991). Scandium Carbide, Sc3C4, a Carbide with C3 Units Derived from Propadiene. Inorganic Chemistry 30(3) 427 131. 

No carbonyl chemistry of scandium and yttrium has been reported yet and there is also no cyanide chemistry of these two elements although thiocyanato complexes of scandium [Sc(NCS)6]3 (bonded through nitrogen) are known. The important developments involving scandium or yttrium with carbon have involved the fullerene derivatives of these elements. There have been some scandium carbide systems prepared but these will be highlighted in the chemistry of the halides. 

OlKal Kalemos, A., Mavridis, A., Harrison, J.F. Theoretical Investigation of Scandium Carbide, ScC, J. Phys. Chem. A 105 (2001) 755-759. 

The atomization enthalpies (4if ) and the enthalpies of formation (AH,) of scandium carbide molecules (kJ/mol). 

Wang, C. R., Kai, X, Tomiyama, X, Yoshida, X, Kobayashi, Y, Nishibori, E., Takata, M., Sakata, M., Shinohara, H. (2001). A scandium carbide endohedral metallofullerene (Sc2C2) Cg4. Angewandte Chemie-International Edition, 40(2), 397-399. 

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