Abstract
Exposure of dichloromethane solution of OEOPFe(BF4), where OEOP is
the monoanion of octaethyloxoporphyrin, to dioxygen results in its
transformation into the mu-oxo bridged compound,
(OEOPFe)(2)O)(BF4)(2). The molecular structure of the title
compound, (OEOPFe)(2)O(BF4)(2), was determined by single-crystal
X-ray diffraction. It contains a binuclear centrosymmetric
(OEOPFe)(2)O(2+) cation (the bridging O atom lies on an inversion
centre) and two tetrafluoroborate anions. The Fe atom is five-coordinate
to four N atoms of the porphyrin ring and to one bridging O atom. The
compound is characterized by an average Fe-N bond length of 2.064
angstrom. The Fe-O bond distance is 1.7665(11) angstrom and the Fe-O-Fe
bond angle is 180.0 angstrom and the two porphyrin rings are parallel.
Crystal data: crystal system, monoclinic, a = 8.867(3), b = 26.104(9), c
= 15.748(6) angstrom, beta = 105.40(3)angstrom, space group, P2(1)/c, V
= 3514(2) angstrom(3), Z = 2.
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