As part of our program on electrochemically-promoted catalytic asymmetric synthesis, we are exploring the synthesis, characterization, and electrochemical behavior of chiral platinum bis(oxazoline) (BOX) complexes. Successful synthesis of a phenyl (BOX)PtCl2 complex (1) was achieved by treating Zeise's dimer with a phenyl-substituted BOX ligand. Single crystal X-ray analysis of 1 revealed the C2 symmetry of the molecule, such that one phenyl substituent lies above and the other below the square planar platinum center. The synthesis of the analogous (t-butyl BOX)PtCl2 (2) was achieved but was complicated by the formation of a bimetallic complex as well as competing hydrolysis and C-H bond activation reactions. The synthesis and characterization of 1 and 2 plus a discussion of the competing reactions in the synthesis of 2 will be presented.
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Back to The 56th Southeast Regional Meeting 2004 (November 10-13, 2004)