89308-47-4Relevant academic research and scientific papers
Ν(5-cyclo-penta-dien-yl)iron(II) hexa-fluoridophosphate and (ν5-cyclo-penta-dien-yl){2-[ν6-2-(pyrrolidin-1-yl) -phen-yl]phenol}iron(II) hexa-fluorido-phosphate
Hendsbee, Arthur D.,Masuda, Jason D.,Piorko, Adam
, p. m391-m394 (2011)
In the complex salt [ν6-1-chloro-2-(pyrrolidin-1-yl)-ben- zene]( ν5-cyclo-penta-dien-yl)iron(II) hexa-fluorido-phosphate, [Fe(C5H5)(C10H12ClN)]PF 6, (I), the complexed cyclo-penta-dienyl and benzene rings are almost parallel, with a dihedral angle between their planes of 2.3 (3)°. In a related complex salt, (ν5-cyclo-penta-dien-yl){2- [ν6-2-(pyrrolidin-1-yl)phen-yl]phenol}iron(II) hexa-fluoridophosphate, [Fe(C5H5)(C16H 17NO)]PF6, (II), the analogous angle is 5.4 (1)°. In both complexes, the aromatic C atom bound to the pyrrolidine N atom is located out of the plane defined by the remaining five ring C atoms. The dihedral angles between the plane of these five ring atoms and a plane defined by the N-bound aromatic C atom and two neighboring C atoms are 9.7 (8) and 5.6 (2)° for (I) and (II), respectively.
RING OPENING REACTIONS OF SOME η6-HETEROCYCLE-η5-CYCLOPENTADIENYLIRON HEXAFLUOROPHOSPHATES
Lee, C. C,Piorko, A.,Steele, B. R.,Gill, U. S.,Sutherland, R. G.
, p. 303 - 308 (2007/10/02)
Ring opening upon reaction with a nucleophile for heterocyclic ligands complexed to cyclopentadienyliron has been studied.The ligands investigated included those related to fluorene with an O, S or NH at C(9) or those related to 9,10-dihydroanthracene again with O, S or NH at the C(9) or C(9) and C(10) positions.Upon treatment with pyrrolidine as the nucleophile, it was found that ring opening occurred only at the site of an O heteroatom.For example, such a reaction with the cyclopentadienyliron complex of dibenzofuran or dibenzodioxin gave, respectively, the cyclopentadienyliron complex of o-N-pyrrolidinyl-o'-hydroxybiphenyl or o-N-pyrrolidinyl-o'-hydroxydiphenyl ether.No ring cleavage was observed at the site of a S or NH as the heteroatom; for example, no reaction took place when the cyclopentadienyliron complex of dibenzothiophene or carbazole was treated with pyrrolidine.A mechanism for the formation of the ring opening products based on the activation of the complexed ring towards nucleophilic aromatic substitution is discussed.
