Pincer-type complexes chiral

A chloro complex 599 with an optically active NGN pincer-type ligand, having two chiral imidazole groups ((, )-Phebox), has been prepared via the reaction of the stannyl derivative of the ligand with Zeise s complex (Equation (131))V ... 

Fig. 12 b Preparation of chiral molecular nanocapsules 15 and 16 with Bis(2,3-di-hydroxypropyl)-10-undecenylamine and trimethylolpropane (TMP), Respectively, and a schematic encapsulation of sulfonated platinum pincer complexes of type 3 in the hydrophilic compartment of the nanocapsules... 

Unexpected Formation of Chiral Pincer CNN Nickel Complexes with P-Diketiminato-Type Ligands via C-H Activation. Synthesis, Properties, Structures, and Computational Studies... 

Steinke et al. synthesized a new type of PCP pincer ligand where the central carbon donor is a saturated NHC (Figure 4.11) [45]. These structures showed a considerable twisting of the ligand framework above and below with respect to the square plane of the metal complex and the PCP donors. In solution, this twisting is not fixed, as the two possible chiral conformations exchange first on the NMR time scale. 

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