[meso-Tetrakis(4-heptyloxyphenyl)porphyrinato]nickel(II)

Abstract

In the title compound, [Ni(C72H84N4O4)], the four-coordinate NiII ion in the middle of the planar 24-membered porphyrin ring is located on a crystallograpic inversion center, with Ni—N distances of 1.946 (2)–1.951 (2) Å. The 4-heptyl­oxyphenyl groups are twisted with respect to the porphyrin mean plane, the dihedral angles being 88.5 (3) and 79.1 (2)°.

meso-Tetrakis[4-(heptyloxy)phenyl]porphyrin

“…Owing to the flexibility of long hydrocarbon chains and similar substituents, porphyrin crystals with long flexible chains (such as alkyl and alkoxy) are not easy to obtain (Balaban et al, 2000;Bhyrappa et al, 2008). Recently, we reported the single-crystal structures of metal complexes of meso-tetrakis(4-alkoxyphenyl)porphyrins (Chen et al, 2010;Yang et al, 2011). In order to investigate the structures of porphyrins without the presence of a metal ion, we have now synthesized meso-tetrakis[4-(heptyloxy)phenyl]porphyrin, (I), which is an important intermediate in the synthesis of metalloporphyrins for liquid-crystal materials (Zhao et al, 2000).…”