Carbon-nitrogen bond rotation, dithiocarbamate

Restricted carbon-nitrogen bond rotation has also been studied in unsymme-trical palladium bis(dithiocarbamate) complexes by HPLC (Fig. 54). At high temperature, there is rapid rotation and a single peak is observed, however, at lower temperatures two peaks can be separated. For [Pd(S2CNHCH2CH2Ph)2], AH was found to be 83 5 kJ mol (372). 

Figure 53. Examples of dithiocarbamate complexes in which restricted rotation occurs about the backbone carbon-nitrogen bond(s).

Figure 54. Rotomers of asymmetric palladium bis(dithiocarbamate) complexes being inteicon-verted via rotation about the backbone carbon-nitrogen bonds.

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