Showing papers on "Ferrocene published in 1987"
TL;DR: An optically active ferrocenylphosphine ligand containing 2-(morpholino)ethylamino or 2-(piperidino)ethylamino group on the ferrocene side chain was effective for the gold-catalyzed aldol reaction of methyl isocyanoacetate with aldehydes as discussed by the authors.
126 citations
TL;DR: The first structurally characterised penta-and hexa-phosphorus analogues of ferrocene, bis-(η5-2,5-di-t-butyl-1,3,4-triphosphacyclopentadienyl)iron and (η 5-2.4,5,5 triphosphate-based butyl 1,3-diphosphacy clopentadiyl)-iron, are described in this article.
Abstract: The first structurally characterised penta- and hexa-phosphorus analogues of ferrocene, bis-(η5–2,5-di-t-butyl-1,3,4-triphosphacyclopentadienyl)iron and (η5-2,4,5-tri-t-butyl-1,3-diphosphacyclopentadienyl)-(η5-2,5-di-t-butyl-1,3,4-triphosphacyclopentadienyl)iron, are described.
64 citations
63 citations
TL;DR: In this paper, the pyrolysis of ferrocene and nickelocene is used to produce thin films that adhere very well to steel and nickel substrates, which is shown to be energy-efficient.
56 citations
TL;DR: The use of microvoltammetric electrodes in near-critical carbon dioxide has been investigated in this paper, where the working electrode is a platinum disk of 5 µm radius and the test compound employed is ferrocene.
Abstract: The use of microvoltammetric electrodes in near-critical carbon dioxide has been investigated. The working electrode is a platinum disk of 5 ..mu..m radius and the test compound employed is ferrocene. Voltammetry is not possible without the addition of water to the electrochemical cell. At temperatures and pressures above the critical point for pure CO/sub 2/, a well-defined voltammetric wave for ferrocene is obtained in the presence of 0.64 M water. Added water also enables the dissolution of tetrahexylammonium hexafluorophosphate in this medium. The diffusion coefficient obtained from voltammograms of ferrocene recorded in these fluids is similar to that reported for other compounds in supercritical carbon dioxide. However, in the presence of a high concentration (0.05 M) of the added salt, the value of the diffusion coefficient is lowered. These results demonstrate that the addition of water to near-critical carbon dioxide results in a fluid which has much greater solvating power than the pure supercritical fluid.
47 citations
TL;DR: In this paper, the electrochemical oxidation of ferrocene on Pt in dimethylformamide, ethanol, propylene carbonate and their aqueous solutions was studied at 25°C.
43 citations
TL;DR: In this paper, carboxy-substituted ferrocene compounds are prepared and investigated by cyclic voltammetry in acetonitrile solution, and the half-wave potentials of most of the acids studied (E1/2=0.58 V versus s.c.
Abstract: Several carboxy-substituted ferrocene compounds are prepared and investigated by cyclic voltammetry in acetonitrile solution. The half-wave potentials of most of the acids studied (E
1/2=0.34−0.58 V versus s.c.e.) are more positive than that of ferrocene (0.33 V), reflecting a diminished susceptibility to oxidation of these compounds relative to the parent metallocene. Only β-ferrocenylpropionic acid (0.325 V) is effectively identical with the latter in its oxidation behaviour, and γ-ferrocenylbutyric acid (0.31 V) tends to be more readily oxidized. The results are of interest for subsequent chemical oxidation studies of ferrocenylcarboxylic acids.
40 citations
TL;DR: In this paper, the synthesis and properties of 11 isocyanides containing the ferrocene moiety, including 7 chiral compounds, are discussed together with their chromium carbonyl complexes.
37 citations
TL;DR: An X-ray diffraction study of PdCl 2 (BPPFA) was carried out in this paper, where the authors showed that the orientation of the four phenyl groups around the phosphorus atoms is nearly the same as that in its achiral analogue, DPPF (dppf = 1,1′-bis(diphenylphosphino)ferrocene).
34 citations
TL;DR: Platinum and palladium derivatives of polymers functionalized with the ferrocene derivatives 1-ferrocenylethyldimethylamine (3), 1,1′-bis(diphenylphosphino)ferrocene (4), N, N -dimethyl-1-(2-diphensylphophosphinoferrocenyl]ethylamines (5), and (S, R )- 5 are effective catalysts for the hydrosilation of olefins such as styrene and 1-hexene by trich
31 citations
TL;DR: In this paper, a 6-step process starting with ferrocene was used to copolymerize with various aromatic and aliphatic diacid chlorides as well as with diisocyanates, leading to polyamides and polyureas having moderately high to low viscosities.
Abstract: Condensation polymerizations of several ferrocenecontaining monomers have been investigated, using low temperature interfacial and solution techniques. 1, 1′-bis(β-aminoethyl)ferrocene was synthesized via a 6-step process starting with ferrocene. This monomer was then copolymerized with various aromatic and aliphatic diacid chlorides as well as with diisocyanates, leading to ferrocene-containing polyamides and polyureas having moderately high to low viscosities. Using the interfacial method, film formation occurred for the polyamides. The related monomer 1,1′-bis(β-hydroxyethyl)ferrocene reacted with diacid chlorides and diisocyanates to form ferrocenecontaining polyesters and polyurethanes, respectively, using the solution method. The ferrocenecontaining condensation polymers were characterized by IR spectroscopy and examined for possible liquid crystalline behavior.
Patent•
31 Mar 1987
TL;DR: A micell soln is obtained by adding a micell formation agent consisting of ferrocene derivative, hydrophobic organic substance such as a coloring matter, paint, photosensitive material, organic electrically-conductive material and electric insulating material and a supporting electrolyte such as sulfate to an aq. medium, mixing and agitating the mixture as discussed by the authors.
Abstract: PURPOSE: To form the thin film of hydrophobic organic substance easily and efficiently on an electrode by using a micell formation agent consisting of ferrocene derivative to solubilize the hydrophobic organic substance in an aq. medium and electrolyzing the obtained micell soln. CONSTITUTION: A micell soln. is obtained by adding a micell formation agent consisting of ferrocene derivative, hydrophobic organic substance such as a coloring matter, paint, photosensitive material, organic electrically-conductive material and electric insulating material and a supporting electrolyte such as sulfate to an aq. medium, mixing and agitating the mixture. As the above- mentioned ferrocene derivative, substance obtained by bonding ferrocene or ferrocene compd. in which a suitable substituent such as alkyl group is bonded to ferrocene to an ammonium salt type cationic surfactant having 4W16C main chain is suitably used. Micell is collapsed on an anode by subjecting the micell soln. to electrolytic treatment and the above-mentioned hydrophobic organic substance is deposited to form an organic thin film. COPYRIGHT: (C)1988,JPO&Japio
TL;DR: Bis(ferrocenylamino)glyoxime has been prepared by the reaction of amino ferrocene with anti-dichlor glyoxime as discussed by the authors, and the nickel(II) complex of this new compound is also described.
TL;DR: In this paper, the intercalation of ferrocene and dimethylaminomethylferrocene into α-tin(IV) hydrogen phosphate (SnP) and α-vanadyl phosphate has been investigated.
Abstract: The intercalation of ferrocene and dimethylaminomethylferrocene into α-tin(IV) hydrogen phosphate (SnP) and α-vanadyl phosphate has been investigated. Successful intercalation of 0.81 mol of dimethylamino-methylferrocene into α-SnP by an acid-base reaction in aqueous medium to form a bilayer of protonated amines was achieved. However, ferrocene was not intercalated under the same conditions. Intercalation of α-vanadyl phosphate by 0.11 mol of ferrocene in acetonic medium at room temperature was effected by a redox topotactic reaction. The voluminous dimethylaminomethylferrocene was not intercalated into α-vanadyl phosphate.
TL;DR: The first bridged ferrocene with four trimethylene chains has been synthesized in this paper, and the d-d* absorption band of 3 appears at unusually short wavelength (345 nm, Ferrocene: 443 nm).
TL;DR: In this paper, the Friedel-Crafts reaction between an aromatic cycle and a halogenophosphine is greatly favored by the complexation of phosphorus, and it was demonstrated for the condensation of ferrocene and 1-bromo-3,4-dimethylphospholene.
TL;DR: In this article, the ionic and neutral decomposition of gaseous ferrocene, 1, 1'dichloroferrocene and tetrachlor-oferrocenes has been investigated via photon and electron induced ionization mass spectroscopy.
Abstract: The ionic and neutral decomposition of gaseous ferrocene, 1, 1’‐dichloroferrocene and 1, 1’, 2, 2’‐tetrachloroferrocene, has been investigated via photon and electron induced ionization mass spectroscopy. The thermodynamic cycle incorporating the ionic and neutral fragments of ferrocene has been constructed. Elimination reactions in the decomposition of the dichloroferrocene and tetrachloroferrocenes have been identified.
TL;DR: In this article, the synthesis and electrochemistry of a new ferrocene bis-porphyrin molecule (3 ) derived from 1,1′-bis(chlorocarbonyl)ferrocene and 5-( p -hydroxyphenyl)-10,15,20-triphenylporphrin are reported.
TL;DR: In this article, the micro-Raman spectra of eight ferrocene derivatives [CpFeCp′; Cp; cp = η5−C5H5, Cp′= η 5−C 5H4R where R = C(O)Me, C(E)Ph, C (O)CH2Ph, etc.] and three (η6-C6H5R)Cr(CO)3 complexes have been recorded for the solids at room temperature in order to demonstrate the applicability of
Abstract: The micro-Raman spectra of eight ferrocene derivatives [CpFeCp′; Cp; Cp = η5−C5H5, Cp′= η5−C5H4R where R = C(O)Me, C(O)Ph, C(O)CH2Ph, etc.] and three (η6-C6H5R)Cr(CO)3 complexes have been recorded for the solids at room temperature in order to demonstrate the applicability of this new spectroscopic technique to organometallic complexes. Much lower laser powers than are normally used for Raman measurements have proved possible (0.5–3 mW at the samples) because of the high collection efficiency of the microscope optics and the multiscanning capability of the spectrometer. Raman spectra can now be obtained for materials earlier thought to be too unstable to survive the long periods of continuous laser irradiation necessary. Some vibrational assignments are proposed for the organometallic complexes examined.
TL;DR: The structure of a 2 : 1 complex between deoxycholic acid and ferrocene has been determined by X-ray crystallography as discussed by the authors, which is the first example of an organometallic compound tightly included in the lattice channel of deoxy cholic acid.
Abstract: The structure of a 2 : 1 complex between deoxycholic acid and ferrocene has been determined by X-ray crystallography; this is the first example of an organometallic compound tightly included in the lattice channel of deoxycholic acid.
TL;DR: The quantum yield for the formation of the T 1 state of ferrocene (Φ T 1 = 0.66 ± 0.13) was determined by the sensitized isomerization of phenylosazone D-glucose.
TL;DR: In this paper, the X-ray photoelectron spectra of the two series of ferrocene (η5-C5H5)2Fe and chromium tricarbonyl complexes have been investigated.
TL;DR: A number of phosphaferricenium salts have been prepared by oxidation of the corresponding phosphaferrocenes with tetracyanoethylene as mentioned in this paper, which indicates that the electron is removed from a PHO molecular orbital which has a different Fe 3d orbital composition from that of ferrocene.
TL;DR: In this article, the transmetallation of 1-chloromercuri-2-dimethylaminomethylferrocene(II) by Pt(PPh 3 ) 3 occurs along with the oxidation of platinum, and the reduction of mercury.
TL;DR: In this paper, photochemical changes in the solutions of ferrocene, cobaltocene, nickelocene and their complexes with 2,2,2-trichloroethanol exposed to near u.v. and argon laser (λ=514.5 nm) radiation were investigated.
Abstract: Photochemical changes in the solutions of ferrocene, cobaltocene, nickelocene and their complexes with 2,2,2-trichloroethanol exposed to near u.v. and argon laser (λ=514.5 nm) radiation were investigated. The solutions of cobaltocene, nickelocene and their complexes were found to undergo photolysis, whereas ferrocene solutions are not sensitive to this kind of irradiation and the ferrocene bound in a complex undergoes photooxidation to give the ferricenium cation. The activating effect of laser irradiation of ferrocene was revealed as a tendency to complex formation. The quantum yield of the investigated photoreactions, equilibrium constant of complex formation,K, and their molar extinction coefficients, ec, were determined.
TL;DR: In this article, the incorporation of the room temperature nematic phase 4-pentyl, 4′-cyano-biphenyl (K-15) into polyvinylferrocene is shown to substantially alter the rate of charge transport through the polymer film.
Patent•
07 Feb 1987
TL;DR: An organometallic electrode material which can be used for rechargeable polymer batteries can be obtained by double thiophene substitution of ferrocene to give 1,1'-bis(2-thenyl)ferrocene of the formula and subsequent intermolecular linking thereof by means of butyllithium and copper(II) chloride to give poly[1, 1, 1'-bis (2, thenyl)FERROCENE], which results in a poly-sandwich structure in which the redox activity of the metal centre and a good reversible oxidis
Abstract: An organometallic electrode material which can be used for rechargeable polymer batteries can be obtained by double thiophene substitution of ferrocene to give 1,1'-bis(2-thenyl)ferrocene of the formula and subsequent intermolecular linking thereof by means of butyllithium and copper(II) chloride to give poly[1,1'-bis(2-thenyl)ferrocene]. This results in a poly-sandwich structure in which the redox activity of the metal centre and a good reversible oxidisability of the heterocycle bridges between the ferrocene units act synergistically. A reversible charging and discharge capacity of 50 Ah/kg could be measured on an electrical test cell equipped with the polymer material.
TL;DR: The photoelectron spectrum of 1 shows that the d-electrons of Fe are attracted by sulfur bridge as mentioned in this paper, showing that 1,2,3-Trichalcogena[3]-ferrocenophanes have unusually high oxidation potentials compared to non-bridged 1,1′-bis(methylthio)ferrocene.
Abstract: 1,2,3-Trichalcogena[3]-ferrocenophanes (1: E=S , 2: E=Se) and 1,3-dithia[3]-ferrocenophane show unusually high oxidation potentials compared to non-bridged 1,1′-bis(methylthio)ferrocene and methylene-bridged [3]-ferrocenophane. The photoelectron spectrum of 1 shows that the d-electrons of Fe are attracted by sulfur bridge.