Chemistry Reference
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FIGURE 18.6
FT-IR spectra. Top: Copper polyyne acetylides prepared from the
electric arc. Bottom: After annealing at 300
C. All the triple bond stretching bands
have disappeared.
Based on the above knowledge on the behaviour of polyynes, a new flow
chart can be designed showing the possible scaling up of the process as
shown in Chart 18.2. In (1, Chart 18.2) decalin is arced with graphite
electrodes and is filtered in (2, Chart 18.2) to remove the carbon particles
formed during arcing. In the precipitation tank (3, Chart 18.2), the polyynes
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