1H,13C, and15N NMR Studies of Au(III) and Pd(II) Chloride Complexes and Organometallics with 2-Acetylpyridine and 2-Benzoylpyridine

摘要

Au(III) and Pd(II) chloride complexes with N(1),O-chelating 2-acetylpyridine (2apy) and N(1)- monodentately binding 2-benzoylpyridine (2bz′py)-[Pd(2apy)Cl2], [Au(2bz′py)Cl3],trans-[Pd(2bz′py)2Cl2], as well as Au(III) chloride organometallics with monoanionic forms of 2apy or 2bz′py, deprotonated at the acetyl or benzyl side groups (2apy*, 2bz′py*)-[Au(2apy*)Cl2], [Au(2bz′py*)Cl2], were studied by1H,13C, and15N NMR.1H,13C, and15N coordination shifts (i.e., differences between the respectiveδ1H,δ13C, andδ15Nchemical shifts of the same atom in the complex and ligand molecules:Δcoord1H=δcomplex1H-δligand1H,Δcoord13C=δcomplex13C-δligand13C,Δcoord15N=δcomplex15N-δligand15N) were discussed in relation to the molecular structures and coordination modes, as well as to the factors potentially influencing nuclear shielding. Analogous NMR measurements were performed for the new (2bz′pyH)[AuCl4] salt.