Homoleptic lanthanide complexes of chelating phosphanamides-an experimental and theoretical study.

Four chelating ligands are present in the first phosphanamide complexes of Group 3 metals and the lanthanides (see structure shown). However, these ligands coordinate to form a distorted molecular structure. The compounds were characterized by single-crystal X-ray structure analysis and quantum-mechanical investigations with density functional theory and MP2 methods.