(η5-Cyclo­penta­dien­yl)(η6-1,2-dipyrrolidin-1-ylbenzene)iron(II) hexa­fluoridophosphate

Both complexed rings in the iron(II) complex cation of the title salt, [Fe(C5H5)(C14H20N2)]PF6, are almost parallel [dihedral angle between planes = 5.34 (13)°]. Among the C atoms of the complexed arene ring, the quaternary C atoms are located at the longest, albeit unequal, distances from the Fe atom [2.252 (2) and 2.168 (2) Å]

(η5-Cyclo­penta­dien­yl)[η6-diethyl eth­yl(phen­yl)malonate]iron(II) hexa­fluorido­phosphate

At 223 (2) K, the complexed rings in the iron(II) complex cation of the title salt, [Fe(C5H5)(C15H20O4)]PF6, are almost parallel [dihedral angle between planes = 4.10 (14)°]. Among the C atoms of the complexed arene ring, the quaternary C atom is located at the longest distance from the Fe atom. The F atoms of the PF6 − anion were found to be equally disordered over two sites

(η5-Cyclo­penta­dien­yl)[(1,2,3,4,4a,12a-η)-naphtho­[2,3-b][1,4]benzodioxine]iron(II) hexa­fluoridophosphate

At 296 (2) K, both complexed rings in the iron(II) complex cation of the title salt, [Fe(C5H5)(C16H10O2)]PF6, are almost parallel [dihedral angle between planes = 2.4 (3)°]. The quaternary C atoms of the complexed arene ring are located at the longest distance from the Fe atom, with Fe—C distances of 2.112 (4) and 2.105 (3) Å, which are slightly longer than the average Fe—C distance for this ring (2.083 Å). The Fe ion is located 1.660 (1) and 1.543 (1) Å, respectively, from the cyclo­penta­dienyl and the complexed arene ring