Other Molecules with Possibly Pyramidal Carbon

Other Molecules with Possibly Pyramidal Carbon 

Besides pyramidane, mat r other molecules with pyramidalized carbon have been examined computationally. Much of the earlier computational work on carbon with unusual configurations was carried out by the groups of Dodziuk and of Radom. The former group explored various unusual configurations at carbon (planar pyramidal, and carbon tetracoordinate with a CCC angle close to linear), while the latter focused on planar carbon, as discussed in Chapter 1, and on pyramidal carbon. 

Among the molectrles examined by the Dodziuk group were 5 (bowlane) which we met in Chapter 1, and 6, 7, and 8, in which two cyclopropane rings have been fused anti to a three-, four-, and five-membeied ring [34] (these are AMl-computed structures)  

Bowlane was (Chapter 1) the starting point in the search for a molecule with tmly planar carbon. Drawn conventionally (9), it appears to possess a pyramidal carbon, but ab initio calculations indicate that the carbon in question actually disposes two of its bonds nearly linearly, with the other two pointing downward  

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Other Molecules with Possibly Pyramidal Carbon... 

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