The First Crystalline Calcium Porphyrin and Tetrakis(tert-butylphenyl)porphyrinato Calcium(II): Its Synthesis, Structure, and Binding Properties Towards Alkali and Alkaline Earth Metal Salts This work was supported by the Fonds National Suisse de la Recherche Scientifique (Grant No. 20-53336.98) and Action COST D9 (European Programme for Scientific Research, OFES No. C98.008)

Angew Chem Int Ed Engl. 2001 Feb 16;40(4):771-774.
No abstract available