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- W135041324 abstract "The organometallic Lewis acid [(η 5 -C5H5)(CO)2Fe]BF4 reacts with excess dry diethyl ether at low temperatures to form the novel labile complex [(η 5 C5H5)(CO)2Fe(OEt2)]BF4 which in turn serves as a precursor in the syntheses of various cationic dicarbonylcyclopentadienyliron complexes. The reactions of [(η 5 C5H5)(CO)2Fe(OEt2)]BF4 with various 1-alkylamines, α,ω-diaminoalkanes, N- heterocyclics and heterofunctional amine ligands, as well as olefins, have been investigated. Reactions with 1-alkylamines and α,ω-diaminoalkane ligands lead to a series of novel monuclear and dinuclear complexes of the types [(η 5 -C5H5)(CO)2FeL]BF4 and [{(η 5 - C5H5)(CO)2Fe}2(μ-L)](BF4)2, respectively. The reaction of [(η 5 - C5H5)(CO)2Fe(OEt2)]BF4 with N-heterocyclic ligands such as 1,3,5,7- tetraazaadamantane (HMTA) and 1,4-diazabicyclo[2.2.2]octane (DABCO) give dinuclear complexes [{(η 5 -C5H5)(CO)2Fe}2(μ-L)](BF4)2 and monuclear complexes [(η 5 - C5H5)(CO)2FeL]BF4 (L = HMTA, DABCO). Its reaction with 1-methylimidazole (1- meIm) affords only the monuclear complex [(η 5 -C5H5)(CO)2Fe(1-meIm)]BF4 in which the coordination of 1-methylimidazole is via the sp 2 -N. The reaction with heterofunctional amine ligands is highly regioselective with the cation [(η 5 - C5H5)(CO)2Fe] + showing higher affinity for NH2 than π-bonded, O or CN functionalities. Besides amines, [(η 5 -C5H5)(CO)2Fe(OEt2)]BF4 reacts with olefins and HCOOH to form complexes of the type [(η 5 -C5H5)(CO)2Fe(η 2 -olefin)]BF4 and [{(η 5 C5H5)Fe(CO)2}2(μ-OCHO)]BF4, respectively. For comparison of steric and electronic effects, analogous pentamethylcyclopentadienyl amine complexes were synthesized from the THF complex [{η 5 C5(CH3)5}(CO)2Fe(THF)]BF4. The reaction of 3-aminoprop-1-ene with the etherate complexes [(η 5 -C5R5)(CO)2Fe(E)]BF4 (R = H: E= Et2O; R = CH3: E = THF) led to air stable complexes [(η 5 -C5R5)(CO)2Fe(NH2CH2CHCH2)]BF4 (R = H, CH3), which in turn react with a mole equivalent of the etherate complexes to give dinuclear complexes of the type, [(η 5 -C5R5)(CO)2Fe(NH2CH2CHCH2)Fe(CO)2(η 5 -C5R'5)](BF4)2 (R not" @default.
- W135041324 created "2016-06-24" @default.
- W135041324 creator A5034926222 @default.
- W135041324 date "2011-01-01" @default.
- W135041324 modified "2023-09-26" @default.
- W135041324 title "Synthesis and characterization of iron amine complexes." @default.
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- W135041324 hasPublicationYear "2011" @default.
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