Structure and Conformation of Photosynthetic Pigments and Related Compounds. XI. 5,10,15,20-Tetrabutylbacteriochlorin

The structure of the title compound, C₃₆H₅₀N₄, is the first example of a tetra-meso-substituted free-base bacteriochlorin (2,3,12,13-tetrahydroporphyrin). While general structural characteristics are similar to other hydroporphyrins, the present structure presents one of the few examples of a hydroporphyrin with a planar macrocycle conformation.

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