Cyclopentadienyliron coordinated chloroarenes were utilized to synthesize novel classes of cationic organoiron methacrylate and styrene monomers via metal-mediated nucleophilic arom. substitution reactions. These monomers were subsequently polymd. using a radical initiator to produce the correspondi...

A review is presented on the use of metal coordination polymers for nanofabrication. Nanostructures of metal nanoparticles and semiconducting metal oxides made from polymers coordinated to the precursors are presented. [on SciFinder(R)]

A review. A brief overview on properties of group IVA elements, their org. compds., and metal-contg. polymers is given. [on SciFinder(R)]

The homogeneous degradation of the polychlorinated n-alkane, 1,2,9,10-tetrachlorodecane (T4C10), was studied in aqueous solutions of hydrogen peroxide, including Fenton and photo-Fenton reaction conditions. All solutions were adjusted to a pH of 2.8 and an ionic strength of 0.1 M NaClO4 prior to pho...

Isomeric dichlorobenzene complexes of ironcyclopentadienyl and pentamethylcyclopentadienyl- ruthenium were used to facilitate nucleophilic arom. substitution (SNAr) reactions with a variety of O, S, and N contg. nucleophiles. Oligomeric and polymeric systems were achieved by variation in the ratio o...

Cyclic voltammetry was employed to investigate the electrochem. behavior of numerous cyclopentadienyliron (CpFe+) and pentamethyl-cyclopentadienylruthenium (Cp*Ru+) coordinated oligomers and polymers. The electrochem. behavior of the iron systems indicated the cyclopentadienyliron complexes had isol...

A variety of homometallic (Cp*Ru+) and heterometallic (CpFe+-Cp*Ru+) oligomers with one to five metal moieties were prepd. in high yields (74-90%) via nucleophilic arom. substitution reactions. For the mixed metal systems, it is shown that the arrangement of the metal moieties along the backbone can...

Three platinum coordination conjugated quinonediimine polymers, trans-[C≡C-1,4-C6H4N:C6(OMe)4:N-1,4-C6H4C≡CPtL2] (10; L = PEt3), cis-[C≡C-1,4-C6H4N:C6(OMe)4:N-1,4-C6H4C≡CPtL2] (11) and trans-[C≡C-1,2-C6H4N:C6(OMe)4:N-1,2-C6H4C≡CPtL2] (12) were prepd. by reactions ...

A review. The unique features of dendritic architecture and the rich chem. of organo-transition metal complexes were combined in metallodendrimers to create the potential for a wide range of utilitarian applications. Because dendrimers allow scientists to probe the twilight zone between homogeneous ...

The ring-opening metathesis copolymns. of deltacyclene (I), substituted I, and norbornene (II) was achieved using RuCl3, ReCl5, and Mo alkylidene catalysts. The reaction conditions employed are similar to those used previously in the syntheses of homopolymers. The low conversion copolymn. of I and I...

Ring cleavage of oxabicyclo[3.2.1]octenes, e.g., I (R = H, R1 = H, Me, CMe3; R = SiMe2CMe3, R1 = H) occurs in Et2O contg. R3Li (R2 = Me, Bu, Me3C) to give highly substituted cycloheptenes, e.g., II. Silylating the secondary OH group of II (R = H, R1 = Me, R2 = Bu) with Me3CSiMe2Cl in DMF contg. imid...

Ring-opening metathesis polymn. of the title monomer (I) occurred in the presence of RuCl3 to give high-mol.-wt. unsatd. polymers contg. highly strained and reactive cyclopropane rings. The effects of water, solvent, catalyst-I ratio, and temp. on polymer wt.-av. mol. wt. were detd. A mixt. of cis a...

Treatment of CuI with the flexible PhS(CH2)4SPh dithioether ligand in MeCN soln. affords the strongly luminescent metal-org. 2D coordination polymer [Cu4I4{μ-PhS(CH2)4SPh}2]n (1). The interpenetrated 2D network of 1 is built upon by Cu4(μ3-I)4 cubane-like clusters as secondary building units (...

The Vyazovkin model-free method were applied to study non-isothermal degrdn. of an aryl and hetaryl azo dye-contg. polynorbornene using a differential scanning calorimetric (DSC) technique. The samples were heated in nitrogen, with heating rates in the range 5-50 K min-1. The isoconversional method ...

The kinetics involved in the thermal degrdn. of an aryl azo dye-contg. polynorbornene was investigated by using isothermal DSC data. The activation energy of the degrdn. was found to be temp. dependent with two different values of 140±5 and 21±2 kJ mol-1, and the Avrami exponent was obsd. to i...

Reaction of the cyclopentadienyliron (CpFe) complex e.g. I-III with an excess of BuNH2 gave only monosubstitution of one of the two chlorogroups, whereas a similar reaction carried out in the presence of some added HOAc resulted in disubstitution of both chloro groups. However, in the reaction of I-...

The living ring-opening metathesis polymns. of deltacyclene (I) and 5-(tert-butyldimethylsiloxy)deltacyclene (II) in presence of the Schrock catalyst Mo(=CHCMe2Ph)[=N-2,6-(iso-Pr)2Ph](O-tert-Bu)2 were described. II was prepd. by first epoxidizing I, then treating this epoxide with a Lewis acid in pr...

Reaction of [(η6-o-Cl2C6H4)Fe(η5-C5H5)][PF6] (I) with an excess of PhOH or p-MeC6H4SH in the presence of K2CO3 gave disubstitution of both chloro groups of I, whereas a similar reaction with one equiv of the nucleophile under conditions of high diln. gave monosubstitution of one of the chloro ...

Polydeltacylene (I) having >95% cis-configuration was prepd. by ring-opening metathesis polymn. in presence of ReCl5. Treatment of I with dimethyldioxirane gave quant. epoxidn., and polynorbornene exhibited similar behavior. [on SciFinder(R)]

(η5-Chloroarene)- or (η6-nitroarene)(η5-cyclopentadienyl)iron hexafluorophosphates react readily with CF3CH2OH/K2CO3 or with piperidine or piperazine to give nucleophilic arom. substitutions with Cl or NO2 as the leaving group, further demonstrating an activation for SNAr reactions by compl...

A discussion of recent developments into the preparative and structural aspects of Fc-peptide conjugates is presented. In particular, the use of disubstituted Fc systems to control the structure is highlighted. The recent efforts of incorporating Fc into peptide-like oligo- and polyamides and dendri...

A review. This chapter reviews research published on conjugated metal-contg. polymers from late 1998 to mid-2005. It includes polymers where the metal is incorporated into the backbone or the side chain of a conjugated polymer. Kingsborough and Swager wrote an excellent review of the field up to lat...

A review presents the redox properties and redox-based functionalities of multi-nuclear metal complex systems such as conjugated linear polymers of oligo- and polyferrocenylene derivs. and organometallic π-conjugated conducting polymers made of metallacyles. [on SciFinder(R)]

The effects of simple salts, surfactant concn., temp., aging, pH, a nonanionic surfactant (Triton X-100), the presence of a hydrocarbon phase (n-decane) on the flow curves of an anionic surfactant, a triethylene glycol C12-15 monoether sulfate sodium salt (Neodol 25-3S) are studied. [on SciFinder(R)...

Nucleophilic substitution of Cl in the cyclopentadienyliron hexafluorophosphates of chlorobenzene, isomeric chlorotoluenes and dichlorobenzenes I (Cp = cyclopentadienyl, R1 = o-, p-Me, -Cl, m-Cl) with the anions generated from di-Et alkylmalonates R2CH(CO2Et)2 (R2 = Me, Et) leads to the formation of...