| Popis: |
Eighteen olefin (or tert-phosphine)-tert-amine N-oxide platinum(II) complexes of the general formula trans-[PtL(tert-amine N-oxide)Cl2] have been prepared, where L is ethylene, styrene, or triethylphosphine. The tert-amine N-oxides used in the complexation were of the N-aryl saturated heterocyclic type substituted at the ortho- or para-position with an electron withdrawal group, i.e. NO2, CN, COCH3, COC6H5, and COOC2H5. The complexes were characterized by elemental analysis, IR, and 1H NMR spectroscopy. Linear relationships were obtained between the stretching frequencies of the NO bonds of the platinum complexes and Hammet constants, viz. σ and σ , which indicate the presence of inductive and field effects for the para-substitution. |
