Tetracluster pyridylporphyrin

Among the several species shown in Fig. 12, two special classes of compounds were systematically studied (31, 38, 39), consisting of tetrasubstituted pyridylpor-phyrins coordinated with four ruthenium-polypyridines (here denoted tetraruthe-nated pyridylporphyrin, TRPyP) or triangular ruthenium clusters (here denoted tetracluster pyridylporphyrin, TCPyP) (Fig. 13). 

TCPyP Free-base tetracluster pyridylporphyrin, [H2-TPyP -0Ru3(MeC02)6(py)2 4] +... 

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