Three Porphyrin-Encapsulating Metal–Organic Materials with Ordered Metalloporphyrin Moieties

1,3,5-benzenetricarboxylate, biphenyl-3,4′,5-tricarboxylate,
and [1,1′:3′,1″-terphenyl]-4,4″,5′-tricarboxylate
react with Cd­(II) cations in the presence of meso-tetra­(N-methyl-4-pyridyl) porphine cations to afford three metalloporphyrin-encapsulating
metal–organic materials, porph@MOM-11, -12 and -13, respectively. The metalloporphyrin moieties
are ordered within channels and closely fit hexagonal or rectangular
cavities, thereby facilitating a better understanding of the structure-directing
effect that can be promoted by metalloporphyrins. Porph@MOM-12 is noteworthy because it exhibits two distinct types of hexagonal
channels and it represents the first example of a net that exhibits mzz topology.