• No se han encontrado resultados

[PDF] Top 20 Molecular Design of Cyclopentadienyl Tantalum Sulfide Complexes

Has 10000 "Molecular Design of Cyclopentadienyl Tantalum Sulfide Complexes" found on our website. Below are the top 20 most common "Molecular Design of Cyclopentadienyl Tantalum Sulfide Complexes".

Molecular Design of Cyclopentadienyl Tantalum Sulfide Complexes

Molecular Design of Cyclopentadienyl Tantalum Sulfide Complexes

... determination of complexes 2-5, and 9. Crystals of 2-4 and 9 were obtained by slow cooling at -20 ºC of the corresponding toluene or hexane ...fraction of solid of 5 was ... See full document

32

Transition metal complexes with functionalized silyl substituted cyclopentadienyl and related ligands: synthesis and reactivity

Transition metal complexes with functionalized silyl substituted cyclopentadienyl and related ligands: synthesis and reactivity

... field of homogeneous Ziegler – Natta polymerization has been rapid since Sinn and Kaminsky’s discovery of the highly active zirconocene dichloride/methylaluminoxane system in 1979 ...metallocene ... See full document

52

Synthesis and reactivity of di(silylamido)cyclopentadienyl titanium and zirconium complexes

Synthesis and reactivity of di(silylamido)cyclopentadienyl titanium and zirconium complexes

... disadvantage of using metallocene complexes to produce polyolefins is the limited temperature stability of the catalyst and the tendency to produce lower molecular weight materials under ... See full document

12

Competitive insertion of isocyanide into tantalum amido and tantalum methyl bonds

Competitive insertion of isocyanide into tantalum amido and tantalum methyl bonds

... that of the imido ligand appears as a singlet (δ ⫽ 3.77 ppm). Two sets of signals for the methyl, tert-butyl and pentamethylcyclopentadienyl groups were observed for the mixture of complexes 5 ... See full document

8

Synthesis of chloro and methyl imido cyclopentadienyl molybdenum and tungsten complexes  X ray molecular structures of [WCp*C13(NtBu)], [MoCp*C1Me2(NtBu) ] and [WCp*C1Me2(NtBu) ]

Synthesis of chloro and methyl imido cyclopentadienyl molybdenum and tungsten complexes X ray molecular structures of [WCp*C13(NtBu)], [MoCp*C1Me2(NtBu) ] and [WCp*C1Me2(NtBu) ]

... After stirring for 20 h at 25°C the insoluble residue was removed by filtration and the toluene solution together with that obtained after washing the solid with dichloromethane 2 × 50 m[r] ... See full document

9

Neutral and Cationic [Bis(η1 amidosilyl) η5 cyclopentadienyl]titanium and  zirconium complexes: synthesis, X ray molecular structures and DFT calculations

Neutral and Cationic [Bis(η1 amidosilyl) η5 cyclopentadienyl]titanium and zirconium complexes: synthesis, X ray molecular structures and DFT calculations

... treatment of 5 was carried out in a Teflon-valved Schlenk tube after addition of 1 ...equiv. of the monobenzylzirconium compound 11, which reacts with am- ine in an irreversible reaction to give 9 ... See full document

12

Theoretical study on the interaction of o-tetrafluorophenylene mercury with ethylene and acetylene

Theoretical study on the interaction of o-tetrafluorophenylene mercury with ethylene and acetylene

... proportion of the time required to perform an ab initio Hartree-Fock SCF calculation is invariably spent calculating and manipulating ...some of these ...electrons of the system; the core electrons ... See full document

12

Regioselective formation of
[2 (η5 cyclopentadienyl) 2 fluorenylpropane] titanium complexes:
precursors, synthesis, structure and reactivity

Regioselective formation of [2 (η5 cyclopentadienyl) 2 fluorenylpropane] titanium complexes: precursors, synthesis, structure and reactivity

... Reaction of 6 with two equivalents of LiMe, in hexane at low temperature, leads to a thermally-stable moisture-sensitive orange microcrystalline solid, charac- terized as the dimethyl compound 9 (Scheme ... See full document

8

Complejos amidosililciclopentadienilo de titanio y circonio con un anillo ciclopentadienilo mono  y di  sustituido  Catalizadores en procesos de isomerización de olefinas y formación de enlaces Si C y Si Si

Complejos amidosililciclopentadienilo de titanio y circonio con un anillo ciclopentadienilo mono y di sustituido Catalizadores en procesos de isomerización de olefinas y formación de enlaces Si C y Si Si

... peso molecular (tiempos de retención más largos) corresponde a los productos cíclicos, mientras que la fracción de mayor peso molecular (tiempos de retención más cortos) corresponde a cadenas ... See full document

275

Design, Synthesis and molecular docking study of hybrids of quinazolin 4(3H) one as anticancer agents

Design, Synthesis and molecular docking study of hybrids of quinazolin 4(3H) one as anticancer agents

... synthesis of compounds (Va-b) was achieved by re- fluxing N-(4-fluorobenzylidene)-4-(4-oxo-2-(4-substituted phenyl)-quinazolin-3(4H)-yl) benzo hydrazides (IVa-b; ...solution of sodium bicarbonate to ... See full document

11

Synthesis and characterization of titanium(IV) complexes containing the diphenylphosphino  and diphenylthiophosphoryl functionalized cyclopentadienyl ligand  Crystal and molecular structure of Ti(η5 C5H4PPh2)Cl3

Synthesis and characterization of titanium(IV) complexes containing the diphenylphosphino and diphenylthiophosphoryl functionalized cyclopentadienyl ligand Crystal and molecular structure of Ti(η5 C5H4PPh2)Cl3

... Splitting cyclopentadienyl – transition metal bonds by reaction with protic substances is a reaction typically used in compounds of very electropositive metals ...consisting of a mixture of ... See full document

9

TítuloRemoval of dimethyl sulfide in a thermophilic membrane bioreactor

TítuloRemoval of dimethyl sulfide in a thermophilic membrane bioreactor

... removal in biofilters, biotrickling filters, and membrane bioreactor (De Bo et al., 2003; Ruokojarvi et al., 2001; Sercu et al., 2005; Smet and Van Langenhove, 1998) at mesophilic conditions. But in practice, some ... See full document

8

TítuloRemoval od hydrogen sulfide using upflow and downflow biofilters

TítuloRemoval od hydrogen sulfide using upflow and downflow biofilters

... Control of hydrogen sulfide gas can be achieved by activated carbon adsorption, ozone oxidation and incineration (Ying et ...Operation of the system over a long period caused a drop in pH of ... See full document

10

η2 Iminoacyl and η2 acyl monocyclopentadienyl tantalum complexes bearing oxo and oxo borane ligands

η2 Iminoacyl and η2 acyl monocyclopentadienyl tantalum complexes bearing oxo and oxo borane ligands

... 0.49 mmol) in toluene (10 mL) was charged with CO, and the mix- ture was stirred for 24 h at room temperature. The solution was then filtered, all volatile components were removed under vacuum to leave ca. 4 mL of ... See full document

6

Insertion of carbon dioxide and isocyanide into tantalum amide and tantalum methyl bonds

Insertion of carbon dioxide and isocyanide into tantalum amide and tantalum methyl bonds

... Studies of CO 2 insertion reactions estab- lished that the M – amide bonds were more reactive than M – alkyl and M – alkoxo bonds, and that regiose- lective insertion into the M – amide bonds always takes place ... See full document

5

Monopentamethylcyclopentadienyl isocyanide, amine and imido tantalum(V) complexes  X ray crystal structure of [TaCp*Cl4(CN 2,6 Me2C6H3)]

Monopentamethylcyclopentadienyl isocyanide, amine and imido tantalum(V) complexes X ray crystal structure of [TaCp*Cl4(CN 2,6 Me2C6H3)]

... amine and imido ligands, the reduction to the tantalumII1 derivative [TaCp*Cl,ICN2,6-Me,C,H,],], characterization of the new complexes by IR and NMR and the molecular structure of spectr[r] ... See full document

5

Application of molecular simulation techniques to the design of nanosystems

Application of molecular simulation techniques to the design of nanosystems

... aim of nanotechnology is to design new microscopic devices at the molecular level, necessitating the tuning of the structural and physicochemical features of its molecular ... See full document

313

Silyl and siloxanediyl cyclopentadienyl titanium and zirconium complexes: synthesis and reactivity  X ray molecular structure of [Zr{η5 C5H4SiMe2(μ OH)}(μ Cl)Cl2]2

Silyl and siloxanediyl cyclopentadienyl titanium and zirconium complexes: synthesis and reactivity X ray molecular structure of [Zr{η5 C5H4SiMe2(μ OH)}(μ Cl)Cl2]2

... During the course of the reaction, a red crystalline solid formed which was collected by filtration, washed with both cold toluene 15 ml and hexane 2 x 30 ml and dried under vacuum at 11[r] ... See full document

10

TítuloDiseño de quelatos de lantánidos de alta estabilidad con interés en imagen molecular

TítuloDiseño de quelatos de lantánidos de alta estabilidad con interés en imagen molecular

... Imagen Óptica a la experimentación in vivo todavía no es viable, y no está exento de complicaciones, principalmente derivadas de la dificultad que supone la detección de luz emitida en el interior del organismo vivo ... See full document

434

Synthesis and reactivity of imido niobium complexes containing the functionalized (dichloromethylsilyl)cyclopentadienyl ligand

Synthesis and reactivity of imido niobium complexes containing the functionalized (dichloromethylsilyl)cyclopentadienyl ligand

... equivalent of LiNHtBu to give the chloro amido niobium complex [NbCp N Cl(NHtBu)(NtBu)] (4) isolated as a mixture of dia- stereoisomers, due to the presence of two stereogenic centres, at silicon and ... See full document

5

Show all 10000 documents...