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A review presents some of the results obtained on the polymn. of cyclopentadienyliron complexes functionalized with olefins. Methacrylate-, styrene-, and norbornene-substituted organoiron monomers are considered. [on SciFinder(R)]
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A variety of homometallic (Cp*Ru+) and heterometallic (CpFe+–Cp*Ru+) oligomers with one to five metal moieties were prepared in high yields (74–90%) via nucleophilic aromatic substitution reactions. For the mixed metal systems, it is shown that the arrangement of the metal moieties along the bac...
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Reaction of an η6-chloroarene-η5-cyclopentadienyl-iron hexafluorophosphate with diethyl malonate in the presence of K2CO3 in THF/DMSO gave a corresponding SN-Ar product, η6-diethyl arylmalonate-η5-cyclopentadienyliron hexafluorophosphate, which, upon pyrolytic sublimation, resulted in the libera...
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A series of polynorbornene homo- and copolymers containing aryl- and/or hetaryl-azo dyes were prepared through ring-opening metathesis polymerization (ROMP). Thermal studies indicated that the polymers were thermally stable up to 250 °C, and possessed glass transition temperatures ranging from 93...
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Pyrazole derivs. are well documented to possess anti-inflammatory activity but their effects on microglial activation are unknown. We detd. the efficacy of the novel pyrazole compd. 2-MBAPA (R/S-(±)-2-Methylbenzylamino 2-oxo-N-[4-cyano-1-phenyl-1H-pyrazol-5-yl] acetamide) on activated microglia u...
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Nucleophilic aromatic substitution (SNAr) of chloroarenes complexed to the cyclopentadienyl iron moiety with ethyl cyanoacetate or phenylsulfonylacetonitrile in the presence of potassium carbonate in DMF resulted in the formation of arylated ethyl cyanoacetate or phenylsulfonylacetonitrile complexes...
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A unique synthetic route to cyclopentadienyliron complexes of functionalized nitrobenzene has been developed via the successive oxidation of the amine and the alkyl groups of their corresponding aniline complexes. Nucleophilic aromatic substitution reactions of the nitroarene complexes with a number...
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Coordination of dicobalt hexacarbonyl to the alkyne moiety of norbornene complexes containing either ferrocene or η(6) -chlorobenzene-η(5) -cyclopentadienyliron hexafluorophosphate, gave two unique trimetallic complexes available for ROMP. Polymerization of each monomer using Grubbs second generat...
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Metal-containing conducting polymers are a new and interesting class of materials that combine some of the redox properties of conducting polymers and some of those of the metal ions. In metal-containing conjugated polymers, there are several possible arrangements of metal group relative to the back...
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The homodinuclear d9-d9 ClM(μ-dppm)2MCl2 complexes, 1 (M = Pt) and 2 (M = Pd) react with the conjugated and luminescent PCP-NC ligand (3, PCP = [2.2]paracyclophane) to provide the corresponding d9-d9 terminal [ClPt(μ-dppm)2Pt(CN-PCP)]Cl (4) and d8-d8 A-frame [ClPd(μ-dppm)2(μ-C=N-PCP)PdCl...
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Polarographic half-wave potentials for two reduction steps of 49 cyclopentadienyliron complexes of substituted arenes or heterocycles in dimethylformamide were determined. A fast cyclic voltammetry (10–40 V/s) was used to study the electron transfer kinetics of some of these complexes. After corre...
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A review describes the use of arene cyclopentadienyliron complexes in monomer and polymer synthesis. Chloroarene complexes undergo facile nucleophilic arom. substitution reactions with bis-phenols and bis-thiols to produce polymers with ether and thioether spacers in their backbones. This represents...
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Arom. nucleophilic substitution reactions (SNAr) of chloroarene cyclopentadienyliron complex cations with K salts of dihydroxyalkanes in a THF/DMF mixt. gave bis(cyclopentadienyliron) arene dications with aliph. ether linkages. Diols were used to produce the diiron complexes I (R = H, x = 2, 4, 6, 8...
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The introduction of metallic moieties coordinated to arenes resulted in polyethers or polyether/thioethers, which have excellent thermal properties. A no. of new cationic organoiron- and ferrocene-contg. linear and crosslinked polymers was achieved successfully via acid-catalyzed condensation polymn...
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Esterification reaction of organoiron complex with terminal carboxylic group with hydroxymethyl EDOT(3,4-ethylenedioxythiophene) and 2-(3-Thienyl) ethanol produced EDOT and thiophene monomers. The electrochemical polymerization of these monomers led to new polymeric materials with the conjugated sys...
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Cyclic voltammetry was employed to investigate the electrochemical behavior of numerous cyclopentadienyliron (CpFe+) and pentamethyl-cyclopentadienylruthenium (Cp*Ru+) coordinated oligomers and polymers. The electrochemical behavior of the iron systems indicated the cyclopentadienyliron complexes ha...
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Cyanide addition to cyclopentadienyliron complexes of substituted nitroarenes produced nitrile adducts where the cyano group added in the ortho position with respect to the nitro group. Cleavage of the cyclopentadienyliron moiety via oxidative demetalation with DDQ led to the isolation of functional...
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This feature article describes the synthesis of various classes of monomers and polymers incorporating organoiron moieties. Polyethers incorporating η6-substituted-arene-η5-cyclopentadienyliron moieties were synthesized via metal-mediated nucleophilic aromatic substitution reactions. Linear polyme...
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Time-dependent oxidation of η6-alkylaniline-η5-cyclopentadienyliron hexafluorophosphates, 17–32, allows for the preparation of nitrobenzene complexes with alkyl 33–48 or keto 49 substituents. Alkylnitroarene complexes are prepared by the oxidation of their corresponding aniline complexes with ...