Rhenium in the core of porphyrin and rhenium bound to the periphery of porphyrin: Synthesis and applications
An overview of most of the well known rhenium porphyrins (rhenium in the core of porphyrins) is presented here reviewing their synthesis, coordination chemistry, and applications. The important features of oxorhenium(V) porphyrins are discussed ellaborately taking into account of their application in epoxidation reaction. Moreover, the chemistry of some recently known porphyrin-Re conjugates (rhenium bound to periphery of porphyrin) are reported considering their applications in photochemical carbon dioxide reduction process and in photodynamic therapy. The number of well characterized rhenium porphyrinoids are limited but they show interesting diverse properties, some of which are also discussed in this review.