Bibliografías temáticas / Alkoxides

Literatura académica sobre el tema "Alkoxides"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 27 de enero de 2023

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  1. Artículos de revistas
  2. Tesis
  3. Libros
  4. Capítulos de libros
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Artículos de revistas sobre el tema "Alkoxides":

1

Phan, Thanh Binh y Herbert Mayr. "Comparison of the nucleophilicities of alcohols and alkoxides". Canadian Journal of Chemistry 83, n.º 9 (1 de septiembre de 2005): 1554–60. http://dx.doi.org/10.1139/v05-170.

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The kinetics of the reactions of benzhydrylium ions with some alcohols and alkoxides dissolved in the corresponding alcohols were photometrically investigated. Using the correlation equation log k (20 °C) = s(E + N), the N and s parameters of methoxide, ethoxide, n-propoxide, and isopropoxide in alcohol–acetonitrile (91:9, v/v) were determined. The cosolvent acetonitrile has only a little influence on the rate constants of the reactions of alcohols and alkoxides. The order of N values (OH– << MeO– < EtO– < n-PrO– < i-PrO–) shows that alkoxides differ only moderately in reactivity but are considerably more nucleophilic than hydroxide. As a consequence, the nucleophilic reactivity of a 0.5 mmol/L aqueous hydroxide solution increases by a factor of 13 when 10% (v/v) methanol is added. In 1–10 mmol/L alkoxide solutions in alcohols, weak electrophiles react considerably faster with alkoxides than with the corresponding alcohols. With increasing electrophilicity, the preference for alkoxides decreases, and electrophiles of –3 < E < 3 react with alkoxides (1–10 mmol/L) and alcohols with comparable rates. Stronger electrophiles will react with alcohols exclusively when alkoxides are present in concentrations ≤10 mmol/L. Key words: kinetics, alcohol, alkoxide, linear free energy relationship, nucleophilicity.<
2

Katayama, Shingo y Masahiro Sekine. "Superconducting oxide YBa2Cu3O7−x prepared by the metal alkoxide method". Journal of Materials Research 5, n.º 4 (abril de 1990): 683–90. http://dx.doi.org/10.1557/jmr.1990.0683.

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Preparation of the superconducting oxide, YBa2Cu3O7−x, was carried out according to the metal alkoxide method. To obtain a homogeneous solution of yttrium, barium, and copper alkoxide in an organic solvent, alkoxides of copper and yttrium were modified by the O-R interchange reaction with 2-dimethylaminoethanol and the structures of their modified alkoxides were studied by 1H-NMR, FT-IR, and EXAFS. The YBa2Cu3O7−x precursor, prepared by hydrolysis of the present solution of alkoxides, was calcined at 850°C for 3 h to give YBa2Cu3O7−x powder as a single phase. This powder was sintered between 900°C and 950°C and characterized for bulk density, microstructure, Tc, and Jc.
3

Katayama, Shingo y Masahiro Sekine. "Bi–Sr–Ca–Cu–O superconducting films fabricated using metal alkoxides". Journal of Materials Research 6, n.º 1 (enero de 1991): 36–41. http://dx.doi.org/10.1557/jmr.1991.0036.

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Superconducting films in the Bi–Sr–Ca–Cu–O systems were made using metal alkoxides. To prepare a dip-coating solution using a mixed alkoxide solution, insoluble Cu and Bi alkoxides were dissolved by modification with 2-dimethylaminoethanol and formation of a double alkoxide, respectively. Formation of the double alkoxides of Bi with Ca or Sr was confirmed using FT-IR and 1H-NMR. Bi–Sr–Ca–Cu–O films on yttria-stabilized ZrO2 and single crystal MgO(100) substrates were made using this solution. The films were closely oriented along the c-axis perpendicular to the substrate. The film on MgO(100) fired at 850 °C for 48 h showed two resistance drops around 115 and 85 K, corresponding to the high-Tc and low-Tc phases, respectively, and zero resistance at 72 K.
4

Katayama, Shingo y Masahiro Sekine. "Fabrication of superconducting YBa2Cu3O7−x fibers by the sol-gel method using metal alkoxides". Journal of Materials Research 6, n.º 8 (agosto de 1991): 1629–33. http://dx.doi.org/10.1557/jmr.1991.1629.

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Superconducting YBa2Cu3O7−x fibers were fabricated by the sol-gel method using modified metal alkoxides. To prepare a heterometallic alkoxide as a precursor of a homogeneous and viscous sol, Y and Cu alkoxides were modified with ethyl acetoacetate (EAA) and ethylenediamine (en), respectively. Their structures were determined by FT-IR and EXAFS. The heterometallic alkoxide was synthesized by partial hydrolysis of the modified alkoxides and was further hydrolyzed and concentrated to obtain a viscous sol. This sol had good spinability and was spun into gel fibers by a spinning apparatus. The gel fibers had a high oxide content of 61 wt.%. The fiber, fired at 950 °C for 10 h in O2, had only closed pores and a dense structure. Tc (onset) of this fiber was 94 K.
5

Sarazen, Michele L. y Enrique Iglesia. "Stability of bound species during alkene reactions on solid acids". Proceedings of the National Academy of Sciences 114, n.º 20 (1 de mayo de 2017): E3900—E3908. http://dx.doi.org/10.1073/pnas.1619557114.

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This study reports the thermodynamics of bound species derived from ethene, propene, n-butene, and isobutene on solid acids with diverse strength and confining voids. Density functional theory (DFT) and kinetic data indicate that covalently bound alkoxides form C–C bonds in the kinetically relevant step for dimerization turnovers on protons within TON (0.57 nm) and MOR (0.67 nm) zeolitic channels and on stronger acids HPW (polyoxometalate clusters on silica). Turnover rates for mixed alkenes give relative alkoxide stabilities; the respective adsorption constants are obtained from in situ infrared spectra. Tertiary alkoxides (from isobutene) within larger voids (MOR, HPW) are more stable than less substituted isomers but are destabilized within smaller concave environments (TON) because framework distortions are required to avoid steric repulsion. Adsorption constants are similar on MOR and HPW for each alkoxide, indicating that binding is insensitive to acid strength for covalently bound species. DFT-derived formation free energies for alkoxides with different framework attachments and backbone length/structure agree with measurements when dispersion forces, which mediate stabilization by confinement in host–guest systems, are considered. Theory reveals previously unrecognized framework distortions that balance the C–O bond lengths required for covalency with host–guest distances that maximize van der Waals contacts. These distortions, reported here as changes in O-atom locations and dihedral angles, become stronger for larger, more substituted alkoxides. The thermodynamic properties reported here for alkoxides and acid hosts differing in size and conjugate-anion stability are benchmarked against DFT-derived free energies; their details are essential to design host–guest pairs that direct alkoxide species toward specific products.
6

Hanf, Schirin, Carlos Lizandara-Pueyo, Timo Philipp Emmert, Ivana Jevtovikj, Roger Gläser y Stephan Andreas Schunk. "Synthetic Routes to Crystalline Complex Metal Alkyl Carbonates and Hydroxycarbonates via Sol–Gel Chemistry—Perspectives for Advanced Materials in Catalysis". Catalysts 12, n.º 5 (18 de mayo de 2022): 554. http://dx.doi.org/10.3390/catal12050554.

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Metal alkoxides are easily available and versatile precursors for functional materials, such as solid catalysts. However, the poor solubility of metal alkoxides in organic solvents usually hinders their facile application in sol–gel processes and complicates access to complex carbonate or oxidic compounds after hydrolysis of the precursors. In our contribution we have therefore shown three different solubilization strategies for metal alkoxides, namely the derivatization, the hetero-metallization and CO2 insertion. The latter strategy leads to a stoichiometric insertion of CO2 into the metal–oxygen bond of the alkoxide and the subsequent formation of metal alkyl carbonates. These precursors can then be employed advantageously in sol–gel chemistry and, after controlled hydrolysis, result in chemically defined crystalline carbonates and hydroxycarbonates. Cu- and Zn-containing carbonates and hydroxycarbonates were used in an exemplary study for the synthesis of Cu/Zn-based bulk catalysts for methanol synthesis with a final comparable catalytic activity to commercial standard reference catalysts.
7

Masuda, Yoshio, Rikuro Ogawa, Yoshio Kawate, Kazuo Matsubara, Tuyoshi Tateishi y Sumio Sakka. "Preparation of YBa2Cu3O7−x superconducting films through the sol-gel method using metal alkoxides as starting materials". Journal of Materials Research 7, n.º 4 (abril de 1992): 819–26. http://dx.doi.org/10.1557/jmr.1992.0819.

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YBa2Cu3O7−x superconducting films have been prepared on a YSZ ceramic substrate through the sol-gel method using metal alkoxides of Y, Ba, and Cu. A homogeneous solution containing the three metal alkoxides was prepared by dissolving the copper alkoxide, which is otherwise insoluble, in diaminoalcohol. The gel film, formed by dipping the substrate into the sol of 80 °C and withdrawing it up, was converted to a ceramic film consisting of YBa2Cu3O7−x phase by sintering at 850 °C for 30 min. The resulting film of about 10 μm in thickness showed zero resistivity (Tc end) at 54 K. Cold isostatic pressing of the film before sintering remarkably improved the Tc end to 85 K.
8

Kemmitt, Tim y William Henderson. "A New Route to Silicon Alkoxides from Silica". Australian Journal of Chemistry 51, n.º 11 (1998): 1031. http://dx.doi.org/10.1071/c98060.

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A novel route to tetraethoxysilane and other silicon alkoxides is described, from amorphous silica (SiO2.nH2O) as the raw material. The reaction of amorphous silica with triethanolamine is enhanced by using an alkali metal hydroxide catalyst, to form a range of triethanolamine-substituted silatrane species. These can undergo alkoxide exchange in acidic alcohols to form alkoxysilatranes, tetraalkoxysilanes, hexaalkoxydisiloxanes and higher siloxanes. Reaction of triethanolamine-substituted silatranes with acetic anhydride produces acetoxysilatrane. Products were identified by multinuclear (1H, 13C and 29Si) magnetic resonance spectroscopy, electrospray mass spectrometry or high-resolution gas chromatography electron impact mass spectrometry.
9

Ambreen, Subia, Mohammad Danish, Narendra D. Pandey y Ashutosh Pandey. "Investigation of the photocatalytic efficiency of tantalum alkoxy carboxylate-derived Ta2O5 nanoparticles in rhodamine B removal". Beilstein Journal of Nanotechnology 8 (13 de marzo de 2017): 604–13. http://dx.doi.org/10.3762/bjnano.8.65.

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Ta2O5 nanoparticles have been synthesized from alkoxy carboxylates of tantalum via the sol–gel route. Tantalum alkoxides were reacted with chlorocarboxylic acids in order to lower the susceptibility hydrolysis. When these modified alkoxy carboxylates were used in the sol–gel synthesis, they yielded Ta2O5 nanoparticles of better properties than those of the alkoxide-derived Ta2O5 nanoparticles. These nanoparticles efficiently removed rhodamine B under UV light irradiation.
10

Wang, Changhong, Shenghai Yang y Yongming Chen. "Determination of the vapour pressure curves and vaporization enthalpies of hafnium alkoxides using thermogravimetric analysis". Royal Society Open Science 6, n.º 1 (enero de 2019): 181193. http://dx.doi.org/10.1098/rsos.181193.

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In order to identify a volatile metallo-organic precursor for the deposition of hafnium oxide (HfO 2 ) films for atomic layer deposition (ALD) applications, the evaporative properties of hafnium alkoxides (hafnium isopropoxide, hafnium n -propoxide and hafnium n -butoxide) were investigated using thermogravimetric analysis. These hafnium alkoxide samples were synthesized by the electrochemical method and characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance and inductively coupled plasma analysis techniques. The characterization results indicated that the products were 99.997% high-purity hafnium alkoxides and could meet the requirement of purity considering the usage of making HfO 2 gate oxide by ALD. Synthesized samples were subjected to a simultaneous thermogravimetric–differential thermal analysis unit at 10 K min −1 in a dry nitrogen atmosphere flowing at 100 ml min −1 . Benzoic acid was used to calculate a calibration constant, which could then be inserted into a modified Langmuir equation to calculate vapour pressure curves for hafnium isopropoxide and hafnium n -propoxide. Detailed vapour pressure data for the HfO 2 precursor hafnium alkoxides were determined. The vapour pressure curve of hafnium isopropoxide was constructed within the first stage, and calculated to be ln p = 31.157 (±0.200)−13130.57 (±56.50)/T. Hafnium n -propoxide and hafnium n -butoxide were simultaneously undergoing evaporation and decomposition, thus making calculations invalid.
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Artículos de revistas Tesis Libros

Tesis sobre el tema "Alkoxides":

1

Hobson, James E. "Metal alkoxides as transesterification catalysts". Thesis, University of York, 2004. http://etheses.whiterose.ac.uk/10972/.

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2

Nguyen, Hanh D. "Structural Elucidation of tert-Butyllithium/Lithium Alkoxide and Lithium Hydride/Lithium Alkoxide Mixed Aggregates". Thesis, University of North Texas, 1997. https://digital.library.unt.edu/ark:/67531/metadc278525/.

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The effects of lithium alkoxides on the rates of reactions and on the structures of a series of tert-butyllithium/lithium alkoxide mixed aggregates were studied, where the alkoxides were iso-butoxide, tert-butoxide and menthoxide. It was found that their effects depend not only on their amount present, but also on their steric bulk. The tert-butyllithium/lithium alkoxide mixed aggregates were exposed to UV light or heat to form lithium hydride/lithium alkoxide mixed aggregates. The aggregation states were assigned from either 13C-6Li coupling or a new technique based on the relative intensity of NMR peaks using different nuclei. The compounds formed depend upon the method of formation and the alkoxide. The unique properties of the lithium hydride/lithium alkoxide mixed aggregates are their high solubility in hydrocarbon solutions, very reactive bases, showing 6Li-1H couplings, and having only one hydride ion per aggregate. Their formation, reactivity, solubility, and aggregation states were found to depend on the size of lithium alkoxides. X-ray crystal structures of lithium tert-butoxide and lithium menthoxide were also studied and found to be hexameric.
3

Hollingsworth, Nathan. "Metal complexes of amino-functionalised alkoxides". Thesis, University of Bath, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.528128.

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4

Young, Kay. "Mixed metal alkoxides as catalyst precursors". Thesis, Durham University, 1989. http://etheses.dur.ac.uk/6528/.

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This thesis describes research carried out to explore the use of mixed metal alkoxides as precursors of materials with catalytic activity in synthesis-gas chemistry. The alkoxide derived catalyst materials are compared against catalysts prepared by traditional co-precipitation methods. A discussion of the project objectives introduces the work and Chapter 1 includes a chronological survey of the literature up to the present day. A brief discussion of the commercial uses of alkoxides is given. Chapter 2 describes the general methods of synthesis and the properties of simple and bimetallic alkoxides; M(OR)(_x) and M[M'(OR)(_n)](_x) respectively. A more detailed treatment of the alkoxides of the first row transition elements is given, with emphasis on the properties and characteristics responsible for their possible potential as catalyst precursors. Chapter 3 deals with the catalytic aspects of ammonia and methanol synthesis. The preparation of industrial, heterogeneous catalysts has traditionally been carried out by co-precipitation of, for example, basic carbonates. The catalytic materials obtained may display catalytic activities which vary markedly (and not always controllably) with the precipitation, ageing, calcinations and/or reduction conditions employed. A discussion of the reaction mechanisms involved in ammonia and methanol syntheses is included. Several mixed metal alkoxides have been prepared from metals known to have catalytic activity in synthesis-gas chemistry (i.e. Mn, Fe, Co, Cu, Zn and Al). These metal alkoxides (e.g. Cu[Al(OPr(^1) (_4)](_2) ) have been characterised and found to compare well with literature data. Analyses, Infra-red and Mass-spectra are reported. After conversion to catalytic materials the alkoxide derived compounds were examined for surface properties ( oxide phases present, copper surface area, crystallite size, pore size distributions and pore volumes). The alkoxide materials compared quite well with the precipitated analogues and there was a difference in the properties of materials derived from different alkoxy groups. These studies were limited to the copper-aluminium alkoxides. The formation of a nickel (II) chloride, HMPA adduct is reported.
5

Nanada, Swagata. "Bimetallic alkoxides as potential lewis acid catalysts". Thesis, University of Newcastle Upon Tyne, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.533694.

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6

Bezougli, Izoldi P. "Insertion reactions of Group 2 metal alkoxides". Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.484172.

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7

Berger, Erik. "Heterometallic Oxo-Alkoxides of Europium, Titanium and Potassium". Licentiate thesis, Uppsala University, Inorganic Chemistry, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-121653.

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Coordination compounds of europium and titanium with oxide, ethoxide (OCH2CH3), iso-propoxide (OCH(CH3)2) and tert-butoxide (OC(CH3)3) ligands have been studied. These belong to the general class of oxo-alkoxides, MxOy(OR)z, with alkoxide ligands (OR) containing an organic, aliphatic part R. The R group can be systematically varied, permitting the investigation of the influence of electronic and steric effects on the coordination of metal and oxygen atoms. Their tendency towards hydrolysis and formation of metal-oxygen-metal bridges also makes (oxo)alkoxides interesting as precursors in liquid solution-based or gas phase-based synthesis of many technologically important materials.

The structure of a termetallic oxo-alkoxide of formula Eu3K3TiO2(OH/OCH3)(OR)11(HOR) (R = C(CH3)3) was revealed by a combination of single-crystal X-ray diffraction and IR spectroscopy. Its unusual structure features a facial oxygen-centered Eu3K3O octahedron sharing one face with an oxygen-centered K3TiO tetrahedron. Six-coordination of oxygen by a combination of alkali metal and lanthanoid atoms is not uncommon for alkoxides, but the attachment of a tetrahedron to one of its faces provides a new dimension to the library of oxo-alkoxide structures. The structure was the result of incomplete metathesis in the synthesis attempt of europium-titanium oxo-tert-butoxides.

Eu4TiO(OR)14 and (Eu0.5La0.5)4TiO(OR)14 (R = CH(CH3)2) were found to be isostructural with previously published Ln4TiO(OR)14 structures (Ln=Sm, Tb0.9Er0.1). X-ray diffraction and UV-Vis absorption results show no site preference for La in either the solid state or hexane solution. The Ln4TiO(OR)14 structure forms part of an interesting group of Ln4MO(OR)10+z­(HOR)q structures where M is another lanthanoid (Ln) or a di-, tri- or tetravalent heteroatom, giving either a square pyramidal or a trigonal bipyramid-like coordination of the central oxygen atom, depending on the chemistry and size of M.

Eu2Ti4O2(OR)18(HOR)2 (R = CH2CH3) was deduced from IR data to have the same molecular structure as Er2Ti4O2(OR)18(HOR)2. UV-Vis measurements are also in agreement with the presence of one symmetry-unique europium site in the molecular structure. Structure determination by single-crystal X-ray diffraction has yet to be performed.

 

Coordination compounds of europium and titanium with oxide, ethoxide (OCH2CH3), isopropoxide(OCH(CH3)2) and tert-butoxide (OC(CH3)3) ligands have been studied. Thesebelong to the general class of oxo-alkoxides, MxOy(OR)z, with alkoxide ligands (OR)containing an organic, aliphatic part R. The R group can be systematically varied, permittingthe investigation of the influence of electronic and steric effects on the coordination of metaland oxygen atoms. Their tendency towards hydrolysis and formation of metal-oxygen-metalbridges also makes (oxo)alkoxides interesting as precursors in liquid solution-based or gasphase-based synthesis of many technologically important materials.The structure of a termetallic oxo-alkoxide of formula Eu3K3TiO2(OH/OCH3)(OR)11(HOR)(R = C(CH3)3) was revealed by a combination of single-crystal X-ray diffraction and IRspectroscopy. Its unusual structure features a facial oxygen-centered Eu3K3O octahedronsharing one face with an oxygen-centered K3TiO tetrahedron. Six-coordination of oxygen bya combination of alkali metal and lanthanoid atoms is not uncommon for alkoxides, but theattachment of a tetrahedron to one of its faces provides a new dimension to the library of oxoalkoxidestructures. The structure was the result of incomplete metathesis in the synthesisattempt of europium-titanium oxo-tert-butoxides.Eu4TiO(OR)14 and (Eu0.5La0.5)4TiO(OR)14 (R = CH(CH3)2) were found to be isostructuralwith previously published Ln4TiO(OR)14 structures (Ln=Sm, Tb0.9Er0.1). X-ray diffraction andUV-Vis absorption results show no site preference for La in either the solid state or hexanesolution. The Ln4TiO(OR)14 structure forms part of an interesting group of Ln4MO(OR)10+z-(HOR)q structures where M is another lanthanoid (Ln) or a di-, tri- or tetravalent heteroatom,giving either a square pyramidal or a trigonal bipyramid-like coordination of the centraloxygen atom, depending on the chemistry and size of M.Eu2Ti4O2(OR)18(HOR)2 (R = CH2CH3) was deduced from IR data to have the samemolecular structure as Er2Ti4O2(OR)18(HOR)2. UV-Vis measurements are also in agreementwith the presence of one symmetry-unique europium site in the molecular structure. Structuredetermination by single-crystal X-ray diffraction has yet to be performed.

8

Dutta, Somnath. "Alkylzirconium alkoxides in organic synthesis reactions with sigma- and pi-bonded organic substrates /". Online access via UMI:, 2005.

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9

Lucas, Amanda Caroline. "Syntheses and applications of α-amino alcohols and alkoxides". Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613890.

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Hussein, Sharifa. "Investigations into the chemistry of highly fluorinated phosphorus alkoxides". Thesis, University of York, 2012. http://etheses.whiterose.ac.uk/3345/.

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This thesis covers the diverse chemistry of fluorinated phosphorus alkoxides, which display Lewis basic, Lewis acidic, weakly coordinating anion or cation chemistry, depending on thenumber of substituents at the phosphorus centre. The chemistry of highly fluorinated phosphorus (III) alkoxides with the general formula PR3-n(ORF)n {R = Ph; ORF = C(CF3)3, CH(CF3)2; n = 1 to 3} has been re-explored after initial work in the area from the late 1970s.1,2 These are found to be useful as ligands with the combined properties of being both electron-poor and sterically bulky, an area in ligand space that to date is sparsely filled. In order to assess the steric properties of the ligands, Tolman “ligand cone angles” (θ) have been calculated for [Ni(CO)3L] and [W(CO)5L] complexes of each ligand from DFT optimised structures at the (RI-)BP86/SV(P) level and for [Ru(η5-C5H5)(NCMe)2-nL1+n]+[PF6]- (n = 0, 1) and [RhCl(CO)L2] complexes from single-crystal X-ray diffraction data. The first structural characterisation of a metal complex with the tris(perfluoro-t-butyl)phosphite, [Ru(η5-C5H5)(NCMe)2P{OC(CF3)3}3]+[PF6]- (θ = 195 °) is also reported. Structural analysis of P{OC(CF3)3}3 suggests it is very rigid without significant conformational flexibility compared to the P{OC(CH3)3}3 analogue. The electronic properties of these ligands were assessed using both a method suggested by Gusev involving the CO stretching frequencies and bond lengths of a [IrCpCOL] complex. The use of experimental data; 1JPW, 1JRhP, IR data from [W(CO)5L] and M-P bond lengths (M = Ru, Rh) from [Ru(η5-C5H5)(NCMe)2-nL1+n]+[PF6]- (n = 0, 1), [RhCl(CO)L2] complexes were also employed.3 Interestingly the fluorinated phosphites; P{OCH(CF3)2}3 and P{OC(CF3)3}3 are found to have similar electronic properties to the incredibly electron-poor PF3 ligand, but with added steric bulk. In addition, preliminary investigations into the synthesis of highly fluorinated alkoxy-containing phosphonium cations which have the potential to form base resistant cations have been explored. For example, oxidation of highly fluorinated alkoxy-containing phosphorus (III) ligands have also been achieved, resulting in the formation of phosphonium cations such as [MePPh2OCH(CF3)2]+[O3SCF3]-. In addition to new cations, the potential for P(V)-alkoxides to form new WCAs has been explored. For example, the synthesis of a novel suprafluorophosphate anion, [P{OCH(CF3)2}5F]- has been investigated. This anion has been isolated as the following novel salts; [Ag(NCMe)4]+[P{OCH(CF3)2}5F]-, [Na(NCMe)6]+[P{OCH(CF3)2}5F]-, [Ag(PR3)3]+[P{OCH(CF3)2}5F]-; R = Ph, iPr, Me, and [NEt4]+[P{OCH(CF3)2}5F]-, some of which are even stable towards hydrolysis at room temperature. This suggests there is potential for the [P{OCH(CF3)2}5F]- anion to be the next generation of [PF6]- type anion.
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Libros sobre el tema "Alkoxides":

1

Matear, W. A. The synthesis of metal alkoxides. Manchester: UMIST, 1992.

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2

Ya, Turova Nataliya, ed. The chemistry of metal alkoxides. Boston: Kluwer Academic Publishers, 2002.

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3

C, Bradley D., ed. Alkoxo and aryloxo derivatives of metals. San Diego: Academic Press, 2001.

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4

Turner, Carl W. The preparation of lithium aluminate by the hydrolisis of lithium and aluminum alkoxides. Mississauga, Ont: Canadian Fusion Fuels Technology Project, 1987.

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5

Ahonen, P. P. Aerosol production and crystallization of titanium dioxide from metal alkoxide droplets. Espoo [Finland]: Technical Research Centre of Finland, 2001.

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6

Renton, Paul. Succinate formation by addition of alkoxides to a 1,2-bisketene and some work towards a stable ene-YNE ketene. Ottawa: National Library of Canada, 1996.

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7

Atherton, Michael David. The preparation and characterization of certain zirconium polyhalocarboxylates, alkoxides and hexachlorozirconates and their potential use as waterproofing agents for cellulosic material. Salford: University of Salford, 1987.

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8

Watts, Philip Michael. Studies in aluminium alkoxide chemistry. Birmingham: Aston University. Department of Chemical Engineering and Applied Chemistry, 1991.

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9

Bansal, Narottam P. Synthesis and thermal evolution of structure in alkoxide-derived niobium pentoxide gels. [Washington, DC: National Aeronautics and Space Administration, 1993.

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10

Bansal, Narottam P. Low temperature synthesis of monolithic transparent TaÓ ́gels from hydrolysis of metal alkoxide. [Washington, DC]: National Aeronautics and Space Administration, 1993.

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Capítulos de libros sobre el tema "Alkoxides":

1

Böttcher, P. "Of Alkoxides". En Inorganic Reactions and Methods, 327. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145197.ch242.

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Böttcher, P. "Of Alkoxides". En Inorganic Reactions and Methods, 335. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145197.ch250.

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Bradley, D. C. "Metal Alkoxides". En Progress in Inorganic Chemistry, 303–61. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470166031.ch7.

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Goel, Subhash C., William E. Buhro, Kai-Ming Chi y Mark J. Hampden-Smith. "Copper(II) Alkoxides". En Inorganic Syntheses, 294–99. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132623.ch52.

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Sawyer, A. K. "From Organotin Alkoxides with Silylmercurials". En Inorganic Reactions and Methods, 363. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145258.ch118.

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Mirzaee, Mahdi, Mahmood Norouzi, Adonis Amoli y Azam Ashrafian. "Catalytic Performance of Metal Alkoxides". En Advanced Catalytic Materials, 225–70. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781118998939.ch7.

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Broderick, Erin M., Samuel C. Browne, Marc J. A. Johnson, Tracey A. Hitt y Gregory S. Girolami. "Dimolybdenum and Ditungsten Hexa(Alkoxides)". En Inorganic Syntheses: Volume 36, 95–102. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118744994.ch18.

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Corey, J. Y. "With Alkali-Metal Alkoxides and Organolithiums". En Inorganic Reactions and Methods, 191. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145258.ch36.

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Halstead, Gordon W., P. Gary Eller y Robert T. Paine. "35. Uranium(V) Fluorides and Alkoxides". En Inorganic Syntheses, 162–67. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132524.ch35.

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Zukoski, C. F., J. L. Look y G. H. Bogush. "Formation of Uniform Precipitates from Alkoxides". En Advances in Chemistry, 451–65. Washington DC: American Chemical Society, 1994. http://dx.doi.org/10.1021/ba-1994-0234.ch022.

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Actas de conferencias sobre el tema "Alkoxides":

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Sharma, Ketan, Jinjun Liu, Anam Paul y Terry Miller. "ANALYSIS OF PSEUDO-JAHN-TELLER EFFECT IN METAL ALKOXIDES". En 74th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2019. http://dx.doi.org/10.15278/isms.2019.ff06.

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Morris, David E. "Steric vs electronic effects in binary uranyl alkoxides: A spectroscopic perspective". En Plutonium futures-The science (Topical conference on Plutonium and actinides). AIP, 2000. http://dx.doi.org/10.1063/1.1292333.

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Katayama, Shingo, Ikuko Yoshinaga y Noriko Yamada. "Processing of transparent inorganic/organic hybrids using metal alkoxides and polydimethylsiloxane". En Optical Science, Engineering and Instrumentation '97, editado por Bruce S. Dunn, John D. Mackenzie, Edward J. A. Pope, Helmut K. Schmidt y Masayuki Yamane. SPIE, 1997. http://dx.doi.org/10.1117/12.284143.

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Kato, Kazumi. "Low-Temperature Processing Using Triple Alkoxides Precursors for Non-volatile Ferroelectric Memories". En 1999 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 1999. http://dx.doi.org/10.7567/ssdm.1999.c-7-2.

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Guizard, Christian, J. C. Achddou, A. Larbot, L. Cot, Gilles Le Flem, C. Parent y Christian L. Lurin. "Interaction between host matrices and fluorescent species trapped in metal alkoxides derived gels". En San Dieg - DL Tentative, editado por John D. Mackenzie y Donald R. Ulrich. SPIE, 1990. http://dx.doi.org/10.1117/12.22560.

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Kololuoma, Terho K., Ari Tolonen, Leena-Sisko Johansson, Joseph M. Campbell, Ari H. O. Karkkainen, Marianne Hiltunen, Tomi Haatainen y Juha T. Rantala. "Fabrication and characterization of Sb-doped Sn0 2 thin films derived from methacrylic acid modified tin(IV)alkoxides". En International Symposium on Optical Science and Technology, editado por Edward J. A. Pope, Helmut K. Schmidt, Bruce S. Dunn y Shuichi Shibata. SPIE, 2002. http://dx.doi.org/10.1117/12.453546.

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Omegna, Federica, Gianfranco Genta, Emanuele M. Barini, Daniele L. Marchisio y Raffaello Levi. "Sensitivity Testing Revisited: The Case of Sol-Gel Transition". En ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59091.

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Classical sensitivity testing addresses mainly problems where the level of one stimulus only governs an abrupt transition in output, or response. Both parametric and nonparametric methods developed, and successfully applied over last century to tackle such problems, provide estimates of critical levels beyond which an item will either respond, or not, to a single stimulus, and of related statistics. However classical methods sometimes may not readily provide an answer, namely when more than one stimulus may reach critical level, and either singularly or jointly trigger transition. Factorial and response surface designs, adequate when dealing with continuous responses, may not perform as well for transition threshold estimation. A practical case at hand in chemical engineering concerns the production, through hydrolysis of a specific precursor, of titania sols and gels that find industrial use as additive for paints, concrete and other building materials due to its optical, photo-catalytic and super-hydrophilic properties. Particles formation and aggregation — controlled by varying the primary process parameters, namely initial alkoxide concentration, water to alkoxide and acid to alkoxide ratios, mixing conditions — may yield either stable, transparent nanometric sols, or monolithic gels, where aggregation of nanometric particles produces a final ceramic object. Depending on the application, one of the two products may be desirable, and therefore it is crucial to control the final product properties. Aggregation kinetics and physical properties of sols, and sol to gel transition, were found to depend strongly upon several factors, that is water to alkoxide initial concentration ratio, acid to alkoxide initial concentration ratio, and their interaction. The approach developed in order to estimate parameters pertaining to transition, and related uncertainty, is presented in the paper, and discussed in the light of experimental results.
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Wang, Shiho, Fikret Kirkbir, S. R. Chaudhuri y Arnab Sarkar. "Accelerated subcritical drying of large alkoxide silica gels". En San Diego '92, editado por John D. Mackenzie. SPIE, 1992. http://dx.doi.org/10.1117/12.132006.

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Xie, Shengli, Jianxia Gou, Bin Liu y Chenguang Liu. "Facile preparation of hexagonal cobalt alkoxide for supercapacitor application". En MATERIALS SCIENCE, ENERGY TECHNOLOGY AND POWER ENGINEERING III (MEP 2019). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5125394.

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Ando, Yasutaka, Shogo Tobe, Takashi Saito, Hirokazu Tahara y Takao Yoshikawa. "Dense Oxide Coating Deposition by High Velocity TPCVD Utilizing Boiling of Metal Alcoxide". En ITSC2004, editado por Basil R. Marple y Christian Moreau. ASM International, 2004. http://dx.doi.org/10.31399/asm.cp.itsc2004p0683.

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Abstract Thermal plasma CVD is hoped to be made fit for practical use because this process is the process which can fabricate precisely structure and component controlled coatings. Especially, TPCVD will be used in the industrial fields where thermal spraying has been used so far since TPCVD come to be studied under an atmospheric environment recently. However, TPCVD coatings fabricated under an atmospheric environment is porous and brittle. So that, TPCVD has been mostly carried out under a low pressure environment and high equipment cost has been demanded. As for the method to solve this problem, according to the report on a gas-deposition process, improvement of the jet flow is thought to be useful. Therefore, in this study, in order to obtain dense and rigid film by TPCVD under an atmospheric environment, Dense oxide coating deposition by High velocity TPCVD utilizing boiling of metal alkoxide was carried out. Consequently, though only brittle coating was deposited on the condition without boiling of metal alkoxide, dense and rigid coating was deposited even under an atmospheric environment on the condition with boiling. From this result, TPCVD was found to have high potential for rapid deposition of dense and rigid coatings.

Informes sobre el tema "Alkoxides":

1

Author, Not Given. Metal alkoxides: Models for metal oxides: Alkoxide ligands in early transition metal organometallic chemistry. Office of Scientific and Technical Information (OSTI), enero de 1990. http://dx.doi.org/10.2172/7151593.

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Chisholm, Malcolm H. Metal alkoxides: templates for organometallic chemistry and catalysis. Final technical report on DE FG 02-86ER13570. Office of Scientific and Technical Information (OSTI), noviembre de 2002. http://dx.doi.org/10.2172/808502.

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Thomas, George Harrison. Alkoxide routes to Inorganic Materials. Office of Scientific and Technical Information (OSTI), diciembre de 2007. http://dx.doi.org/10.2172/971209.

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Malcolm H. Chisholm. New Generation Polymers from Renewable Resources: The Role of Metal Alkoxide Catalysts. Office of Scientific and Technical Information (OSTI), julio de 2007. http://dx.doi.org/10.2172/910439.

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Byers, C. H., R. R. Brunson, M. T. Harris y D. F. Williams. Controlled nucleation and growth studies in metal oxide and alkoxide systems by dynamic laser-light-scattering methods. Office of Scientific and Technical Information (OSTI), abril de 1987. http://dx.doi.org/10.2172/6870470.

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Chisholm, Malcolm H. Mechanistic studies aimed at the development of single site metal alkoxide catalysts for the production of polyoxygenates from renewable resources. Office of Scientific and Technical Information (OSTI), diciembre de 2015. http://dx.doi.org/10.2172/1169422.

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[Metal alkoxides---models for metal oxides: Alkoxide ligands in early transition metal organometallic chemistry]. Office of Scientific and Technical Information (OSTI), enero de 1992. http://dx.doi.org/10.2172/6621825.

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[Metal alkoxides---models for metal oxides: Alkoxide ligands in early transition metal organometallic chemistry]. Progress report. Office of Scientific and Technical Information (OSTI), diciembre de 1992. http://dx.doi.org/10.2172/10147710.

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