Crystal structure of [Fe(OEP)(NO)] (1) from monoclinic (left;
form I) and triclinic (right, form II) crystals
taken from ref. 14. In form
I, 5 neighboring ethyl groups of OEP point to one face of the
porphyrin, whereas the remaining 3 point in the opposite direction. In
contrary, in form II, 4 neighboring ethyl groups point to each
face of the porphyrin core as indicated on the right. (Reprinted with
permission from Ref. 14. Copyright
1997 and 2000, American Chemical Society.) (Comment: permission request will
be submitted when needed)