Intramolecular rearrangement trigonal twist

Intramolecular Rearrangements of Tris-chelate Complexes.— Recently there has been considerable attention paid to the stereochemical non-rigidity of tris-chelate complexes and a number of reviews have dealt with the subject. Studies of NN-disubstituted dithiocarbarmato-complexes of the type [M(R R -dtc)8] (R, R = alkyl or aryl) have been extended and the results for intramolecular metal-centre inversion (probably by the Bailar trigonal-twist mechanism) are summarized for ruthenium(m) complexes in Table 29. The low values of AG and are surprising for ruthenium(m) since previous studies indicated that tris-chelates of this... 

---