Macroscopic quantities of the metallo-carbohedrenes TI(8)C(12) and V(8)C(12) have been synthesized with an arc discharge technique. Mass spectroscopy of raw soot samples generated in both an alternating and direct current arc between two metal-graphite powder composite electrodes establishes that the titanium and vanadium analogs of the metallo-carbohedrenes have been produced. An estimated yield of approximately 1 percent is obtained, and significantly, the products are stable in air.
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Cartier et al. (1993) studied this question.
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