2022-09-012022-09-012022-04-05http://hdl.handle.net/123456789/14122engNamensnennung 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/bisphosphonatescalciumcoordination chemistry: O ligandsphosphorusstructure elucidation540Synthesis of Geminal Bis- and Tetrakisphosphonate Ester Derivatives and Their Coordination Behavior Towards Ca(II) IonsAufsatzDiphosphonateCalciumKoordinationslehreLigandPhosphorStrukturaufklärung