High nuclearity carbido carbonyl clusters of rhenium. Synthesis, X-ray crystal structure, and 13C n.m.r. study of the anion [Re8C(CO)24]2?

Abstract
The novel high nuclearity carbido carbonyl anion [Re8C(CO)24]2–, isolated from the pyrolysis of [ReH2(CO)4] in n-tetradecane, has the, metal atoms arranged as an octaheron capped on two opposite faces as shown by an X-ray crystal structure determination; 13C n.m.r. analysis has confirmed the nature of the interstitial atom and shown that the solid-state structure of the anion is maintained in solution.

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