Stereochemical structure determination of p-cymene Ru(II) complexes containing the PPh2PY ligand with 2-D NOESY and HMQC NMR experiments.

摘要

Complexes [Ru(p-cymene)Cl-2(PPh2Py)] (1) and [Ru(p-cymene)Cl(PPh2Py)]BF4 (2) were studied by means of H-1, C-13{H-1} 2-D NOESY and HMQC NMR spectral methods. NMR data agree with C-1 and C-s symmetries for complexes 1 and 2, respectively. NOESY cross-peaks allowed the assignment of signals to CH arene protons and in the case of complex 2 the determination of the molecular stereochemistry. These results are in agreement with the X-ray molecular structures of both complexes. (c) 2005 Elsevier B.V. All rights reserved.