Coordination Polymers based on the Neutral Ditopic Ligand (CHPO(OCH)) Involving some f-Block Elements.

An improved synthesis using microwave heating affords (CHPO(OCH)) in excellent isolated yield (95 %). The ligand properties of this bisphosphonateester were explored towards hard metal centers ( = Ca, UO) and ( = La, Ce, Sm, Eu) resulting in coordination polymers, for which the reduction of ionic size of the central metal atom resulted in lower-dimensional structural motifs as opposed to higher dimensional networks obtained for the larger ions. All coordination polymers were characterized by single-crystal X-ray diffraction, IR spectroscopy, and combustion analysis. The ligand was furthermore characterized with multinuclear NMR spectroscopy.