Molecular Solid Solution of Tetraphenyl-porphin and Silver Tetraphenylporphin

Abstract
Molecular solid solutions have received surprisingly little attention in the past, yet we must study them before we can hope to understand why their natural occurrence appears to be so much more limited than that of their inorganic counterparts. Examples might conceivably have escaped attention because single-crystal X-ray work has not been carried out on “impure” molecular crystals. Porphyrins are well suited for solid solution study. Because of their biological importance, their molecular structure is known in detail from numerous refined crystal structures that have appeared in recent years.1 Methods of porphyrin synthesis have been perfected over many years in the laboratory of Professor A. H. Corwin at The Johns Hopkins University.

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