Zirconocene dichloride is an organozirconium compound composed of a zirconium central atom, with two cyclopentadienyl and two chloro ligands. It is a colourless...
11 KB (986 words) - 20:26, 6 August 2024
such as zirconium dioxide, and organometallic compounds, such as zirconocene dichloride. Five isotopes occur naturally, four of which are stable. The metal...
47 KB (5,333 words) - 18:54, 17 August 2024
reagent, treatment of zirconocene dichloride in tetrahydrofuran with two equivalents of n-butyllithium at −78 °C gives (1-butene)zirconocene, which is represented...
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Schwartz's reagent (redirect from Zirconocene hydride)
Weigold. It can be purchased or readily prepared by reduction of zirconocene dichloride with lithium aluminium hydride: (C5H5)2ZrCl2 + 1⁄4 LiAlH4 → (C5H5)2ZrHCl...
18 KB (1,662 words) - 07:20, 25 June 2024
Vanadocene dichloride is an organometallic complex with formula (η5-C5H5)2VCl2 (commonly abbreviated as Cp2VCl2). It is a structural analogue of titanocene...
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dimerization. The original synthesis involved the reduction of zirconocene dichloride and the addition of bis(trimethylsilyl)acetylene in THF before transferring...
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stereochemistry at the metal centre. For example, three distinct ansa-zirconocene dichloride catalysts used in the synthesis of polypropylene in the presence...
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Molybdocene dichloride is the organomolybdenum compound with the formula (η5-C5H5)2MoCl2 and IUPAC name dichlorobis(η5-cyclopentadienyl)molybdenum(IV)...
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Decamethylzirconocene dichloride is an organozirconium compound with the formula Cp*2ZrCl2 (where Cp* is C5(CH3)5, derived from pentamethylcyclopentadiene)...
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Zirconocene dichloride, a cyclopentadienyl complex...
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decamethylzirconocene dichloride, Cp*2ZrCl2. Well-studied derivatives include Cp*2ZrH2, [Cp*2Zr]2(N2)3, Cp*2Zr(CO)2, and Cp*2Zr(CH3)2. Zirconocene dichloride can be...
12 KB (1,161 words) - 17:43, 11 August 2024
Titanocene dichloride is the organotitanium compound with the formula (η5-C5H5)2TiCl2, commonly abbreviated as Cp2TiCl2. This metallocene is a common reagent...
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is prepared from TMA and titanocene dichloride. In combination with 20 to 100 mol % Cp2ZrCl2 (zirconocene dichloride), the (CH3)2Al-CH3 adds "across" alkynes...
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Carboboration. The carboalumination reaction is most commonly catalyzed by zirconocene dichloride (or related catalyst). Some carboaluminations are performed with...
16 KB (1,689 words) - 09:11, 3 June 2024
Homogeneous metallocene catalysts, e.g., derived from or related to zirconocene dichloride introduced a level of microstructural control that was unavailable...
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inorganic and organometallic compounds such as zirconium dioxide and zirconocene dichloride, respectively. Five isotopes occur naturally, three of which are...
42 KB (4,989 words) - 03:33, 15 April 2024
Cl-Nb-Cl angle of 85.6° is narrower than in zirconocene dichloride (97.1°) but wider than in molybdocene dichloride (82°). This trend is consistent with the...
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dichloride, this angle is more open at 85.6°. In the d0-complex zirconocene dichloride the angle is even more open at 92.1°. This trend reveals that the...
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our results easily." In addition, Zr(C5H5)2 obtained by reducing zirconocene dichloride is also called Negishi reagent, which can be used in oxidative cyclisation...
21 KB (1,850 words) - 15:25, 20 November 2023
Decamethyltitanocene dichloride is an organotitanium compound with the formula Cp*2TiCl2 (where Cp* is C5(CH3)5, derived from pentamethylcyclopentadiene)...
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Sodium cyclopentadienide (NaC5H5) reacts with ZrCl4(THF)2 to give zirconocene dichloride, ZrCl2(C5H5)2, a versatile organozirconium complex. One of the most...
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of metallocenes. For example, the preparation of ferrocene and zirconocene dichloride: 2 NaC5H5 + FeCl2 → Fe(C5H5)2 + 2 NaCl ZrCl4(thf)2 + 2 NaCp → (C5H5)2ZrCl2...
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Rosenthal's reagent can be prepared by reduction of titanocene or zirconocene dichloride with magnesium in the presence of bis(trimethylsilyl)acetylene in...
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Zr(OR)4 + 4 NH4Cl Zirconium ethoxide can also be prepared with zirconocene dichloride: Cp2ZrCl2 + 4 EtOH + 2 Et3N → 2 CpH + 2 Et3NHCl + Zr(OEt)4 Zr(OnPr)4...
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prepared in a one-step reaction by the palladium-catalyzed reaction of Zirconocene dichloride with 4-n-butylbenzene bromide. 1,2,3,4,5-Pentakis(4-butylphenyl)-1...
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well studied spectroscopically. It is prepared by chlorination of zirconocene dichloride. Being polymeric, complex is insoluble in nonpolar solvents. It...
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bis(methoxyethoxy) aluminium dihydride, SMEAH or Red-Al) reacts with zirconocene dichloride to afford zirconocene chloride hydride (Schwartz's reagent). Alkenes undergo...
14 KB (1,747 words) - 20:53, 22 July 2024
the first example was not reported until 1954. In that year titanocene dichloride was described by Wilkinson and Birmingham. Independently, titanium-based...
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to afford titanocene dichloride and various S5+x and S5Sex rings. Illustrative is the synthesis of S7 from disulfur dichloride: (C5H5)2TiS5 + S2Cl2 →...
5 KB (385 words) - 12:05, 21 May 2024