Abstract
For octahedral complexes containing three flexible bidentate ligands we distinguish five sources of isomerism - metal and ligand asymmetry, conformational, orientation and sequential isomerism. By using the “C 3” projection and simple permutation concepts it is possible to account for, name, total and inter-relate all isomers in this system. The example shows how in a typical system 2244 isomers are distinguished and uniquely named in a simple table. The gaps in the table are also simply explained. Whereas permutation group theory goes straight to totals and “Herumprobieren” counts heads, this is enlightened Herumprobieren which factorizes, permutes and identifies.
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