Chemical Society Reviews publishes accessible, succinct and reader-friendly articles on topics of current interest in the chemical sciences.
Paper
Chem. Soc. Rev., 1999, 28, 367 - 371, DOI: 10.1039/a801225c
Compounds containing a planar-tetracoordinate carbon atom as analogues of planar methane
Walter Siebert and Anuradha Gunale
Over the past years the number of examples of compounds containing a planar-tetracoordinate carbon atom has increased. However, the presence of a carbon atom with a 360° sum of angles does not imply that the species is a derivative of planar methane; there must be an appropriate electronic stabilization. In the case of complexes 21a and 21b the central carbon atom is indeed stabilized by
-donors and
-acceptors, as required for planar methane.
