A review. A no. of synthetic routes was utilized in the prodn. of organometallic monomers and polymers contg. arenes coordinated to the Group VI, VII and VIII transition metals. Transition metal-coordinated monomers were prepd. either by nucleophilic arom. substitution reactions of transition metal-...

A review, with ∼9 refs., of the use of NMR spectroscopy for the detn. of the structure of a no. of cyclopentadienyliron arene systems. The examples presented here demonstrate the use of 1- and 2-dimensional NMR techniques in predicting the chem. structure and dynamics of these complexes. The nu...

A review. This article provides a comprehensive review of the synthesis, properties and applications of organometallic polymers of the transition metals. The different classes of organometallic polymers are described according to their structural make-up, as well as by their methods of synthesis. A ...

A series of cyclopentadienyl-iron-complexed azo-functionalized polymers were synthesized. The visible spectra of the azo dyes changed upon reaction with organometallic complexes; however, the absorption spectra of the monomers and polymers were similar. Photolysis of the organoiron polymers allowed ...

Hydride and cyanide addn. to di- and polycyclopentadienyliron arene complex cations with etheric bridges is described. Reaction of the di-Fe complexes with NaBH4 gave a no. of adducts. P-Methyl- and o,o-dimethylphenoxybenzene cyclopentadienyliron complexes were used as models in this study to allow ...

Arylated phenylsulfonylacetonitriles, e.g., PhCH(CN)SO2Ph, and Et cyanoacetates, e.g., PhCH(CN)CO2Et, were prepd. by nucleophilic substitution of cyclopentadienyliron complexes of chloroarenes, e.g., I, with NCCH2R (R = SO2Ph, CO2Et) in the presence of potassium carbonate in DMF followed by photolys...

A new approach to the design of monomeric and oligomeric ether and thioethers is presented. Nucleophilic arom. substitution (SNAr) of 1,4-dichlorobenzene, 1-chloro-2-methylbenzene, and 2-chloro-1,3-dimethylbenzene complexed to cyclopentadienyliron with arom. dihydroxy or aliph. dimercapto nucleophil...

A review on the synthesis, properties, and characterization of macromols. based on ferrocene or arene cyclopentadienyliron cations is presented. Ferrocene-based polymers in which the ferrocene moieties are in or pendent to the backbone are described, as well as, the use of arene cyclopentadienyliron...

Synthesis and characterization of new thermally stable polynorbornenes functionalized with pendent flexible side-chains are reported. The flexible side-chains with terminal hydroxy groups were synthesized via SNAr reactions of cyclopentadienyliron-complexed chlorobenzenes with aliph. diols. Condensa...

The reaction of aliph. primary amines with phenolphthalein-contg. dicyclopentadienyliron complexes led to etheric bond cleavage. This unique cleavage reaction is due to nucleophilic attack by the amines ipso to the etheric group of the complexed arene, which is activated by coordination to the catio...

As functionalization of the polynorbornene backbone has shown to be a viable route towards altering the thermal and chem. properties of the resulting polymeric material, our focus was on the prepn. of norbornene monomers contg. a side-chain consisting of a rigid mesogen and/or an aliph. spacer. Ring...

The introduction of cyano groups into arom. sulfones is of interest in light of the potential uses of these materials as monomeric units in the synthesis of engineering thermoplastics. Organoiron complexes (I) were initially prepd. by reaction of p-dichlorobenzenecyclopentadienyliron with various di...

A unique route to the synthesis of 2-alkyl-2-arylphenylsulfonylacetonitriles via the nucleophilic arom. substitution (SNAr) of (chloroarene)cyclopentadienyliron complexes with 2-alkyl phenylsulfonylacetonitriles was studied. Reactions of chloroarene complexes with 2-alkyl phenylsulfonylacetonitrile ...

The electrochem. study of a no. of polyarene-Fe complexes (e.g., I, 1,4-X,Y; X = Y = O, S) contg. etheric, sulfide, and sulfone bridges indicated that there were various degrees of interaction based on the nature of the bridging heteroatoms. While the electrochem. study of all etheric complexes show...

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...

Some diaminochromenes, e.g., I, 7-amino-4-aryl-coumarins, 7-hydroxy-4-aryl-1,2-dihydroquinolines, and 2-amino-7-hydroxy-4-(4-chlorophenyl)-4H-chromenes were synthesized via Michael addn. of different substituted aminonaphthol, aminophenol, resorcinol derivs., chloronaphthol, and 4-hydroxycoumarin wi...

Complexes I (R1 = H, Me; R2 = Me, Cl) were used in the prepn. of phenylmalonate esters II. The arylation of CH2(CO2Et)2 by I and K2CO3 gave [(cyclopentadienyliron)phenyl]malonates III, and III underwent pyrolytic sublimation to give II. [on SciFinder(R)]

Several derivs. of coumarin-3N-carboxamides have been prepd. via the reaction of the coumarin-3-carbonyl chloride with a no. of nucleophiles. Novel double-headed coumarin-3N-carboxamides were also produced using the same method. The Pechmann-Duisberg reaction was applied to prep. new benzo[f]- benzo...

A review. Prepn. techniques and characterization of the transition metal-contg. polymers (organometallic polymers) where the metal is bonded to at least one org. group through σ- and/or π-bonds. [on SciFinder(R)]

Displacement of the terminal chloro groups of diiron arene complexes with 1-naphthol led to the formation of the corresponding complex with terminal naphthoxy groups. Photolytic demetallation of these complexes produced the monomeric blocks in good yields. Scholl polymn. was implemented leading to t...

A series of functionalized polynorbornenes contg. pendent ether- or ester-bridged poly(arom. ether) chains were prepd. The ether-bridged norbornene complex was synthesized via cyclopentadienyl iron-mediated nucleophilic arom. substitution reactions. This methodol., combined with that of dicyclohexyl...

Nucleophilic arom. substitution (SnAr) of cyclopentadienyliron-arene complexes with various aliph. or arom. dithiols followed by oxidn. and/or photolysis is presented as a viable route to the prepn. of the corresponding bis(sulfides) and bis(sulfones) in yields of 70-96%. The photochem. reaction of ...

Over the past few decades, we have seen a growing interest in the development of various classes of metal-contg. polymers. While polymers are traditionally carbon-based materials that contain only a few other elements, organometallic polymers could incorporate almost all the other elements of the pe...