E. Iengo et al., Metal-mediated self-assembly of molecular squares of porphyrins rimmed with coordination compounds, EUR J INORG, (3), 2001, pp. 609-612
Partially coordinated meso-tetra(4'-pyridyl)porphyrin, in which two out of
four peripheral 4'-(N)py sites are bound to inert Ru-II complexes, self ass
embles with cationic square-planar Pd-II or neutral octahedral Ru-II 90 deg
rees angular units to yield a new family of molecular squares, in which the
periphery of the porphyrins is rimmed with coordination compounds.