| Popis: |
IR, 1 H NMR and 13 C NMR spectra of cis -Pt(S-EtCys)Cl 2 have been analyzed and interpreted in favor of a structure which the ethyl-cysteine ligand coordinates through its S and N atoms. Additionally, the 1 H and 13 C NMR spectra show the existence of two diastereomers, differing in their absolute configuration at sulfur. These conclusions were confirmed by a single-crystal X-ray structure determination, which showed the presence of both diastereomers in the unit cell. Crystallographic details: cis -Pt(S-EtCys)Cl 2 crystallizes in the monoclinic space group P2 1 , with a = 8.336(6) A , b = 10.997(8) A , c = 15.097(9) A , β = 120.76(3)°, Z = 4. Final R factor = 0.054 for 1842 reflections. |
