Different conformations of phthalocyanine skeletons in a structure of μ-oxo-bis(phthalocyaninato)iron with asymmetry coordination

In a μ-oxo-bis(phthalocyaninato)iron prepared from ferrocene and phthalonitrile, one phthalocyaninatoiron is coordinated with pyridine and the other with tetrahydrofuran, respectively. The one with pyridine coordinated exhibits a dome-like conformation and other with tetrahydrofuran exhibits a saddle shape.