(Cycloheptatrienyl)(cyclopentadienyl)titanium

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(Cycloheptatrienyl)(cyclopentadienyl)titanium
Troticene.svg
Names
Other names
troticene
Identifiers
3D model (JSmol)
ChemSpider
PubChem CID
  • InChI=1S/C7H7.C5H5.Ti/c1-2-4-6-7-5-3-1;1-2-4-5-3-1;/h1-7H;1-5H;/q2*-1;+2
    Key: JDNUFMVXAYMRAZ-UHFFFAOYSA-N
  • [CH-]1C=CC=C1.[CH-]1C=CC=CC=C1.[Ti+2]
Properties
C12H12Ti
Molar mass 204.095 g·mol−1
Appearanceblue solid
Density 1.40 g/cm3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

(Cycloheptatrienyl)(cyclopentadienyl)titanium is an organotitanium compound with the formula Ti(C7H7)(C5H5). It is a blue, diamagnetic, sublimable solid that is sensitive toward air. The structure has been confirmed by X-ray crystallography. [1] This sandwich complex features cyclopentadienyl and cycloheptatrienyl ligands bound to titanium. The Ti-C distances are all within a narrow range near 2.35 Å.

The complex can be prepared by the reaction of titanocene dichloride, butyllithium, and cycloheptatriene. [2]

See also

Related Research Articles

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<span class="mw-page-title-main">Titanium tetrachloride</span> Inorganic chemical compound

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<span class="mw-page-title-main">Kaminsky catalyst</span> Ethylene polymerization catalyst

A Kaminsky catalyst is a catalytic system for alkene polymerization. Kaminsky catalysts are based on metallocenes of group 4 transition metals activated with methylaluminoxane (MAO). These and other innovations have inspired development of new classes of catalysts that in turn led to commercialization of novel engineering polyolefins.

<span class="mw-page-title-main">Pentamethylcyclopentadiene</span> Chemical compound

1,2,3,4,5-Pentamethylcyclopentadiene is a cyclic diene with the formula C5(CH3)5H, often written C5Me5H, where Me is CH3. It is a colorless liquid.

<span class="mw-page-title-main">Titanocene dichloride</span> Chemical compound

Titanocene dichloride is the organotitanium compound with the formula (η5-C5H5)2TiCl2, commonly abbreviated as Cp2TiCl2. This metallocene is a common reagent in organometallic and organic synthesis. It exists as a bright red solid that slowly hydrolyzes in air. It shows antitumour activity and was the first non-platinum complex to undergo clinical trials as a chemotherapy drug.

<span class="mw-page-title-main">Tebbe's reagent</span> Chemical compound

Tebbe's reagent is the organometallic compound with the formula (C5H5)2TiCH2ClAl(CH3)2. It is used in the methylidenation of carbonyl compounds, that is it converts organic compounds containing the R2C=O group into the related R2C=CH2 derivative. It is a red solid that is pyrophoric in the air, and thus is typically handled with air-free techniques. It was originally synthesized by Fred Tebbe at DuPont Central Research.

<span class="mw-page-title-main">Sandwich compound</span> Chemical compound made of two ring ligands bound to a metal

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<span class="mw-page-title-main">Organotitanium chemistry</span>

Organotitanium chemistry is the science of organotitanium compounds describing their physical properties, synthesis, and reactions. Organotitanium compounds in organometallic chemistry contain carbon-titanium chemical bonds. They are reagents in organic chemistry and are involved in major industrial processes.

<span class="mw-page-title-main">Titanocene dicarbonyl</span> Chemical compound

Dicarbonylbis(cyclopentadienyl)titanium is the chemical compound with the formula (η5-C5H5)2Ti(CO)2, abbreviated Cp2Ti(CO)2. This maroon-coloured, air-sensitive species is soluble in aliphatic and aromatic solvents. It has been used for the deoxygenation of sulfoxides, reductive coupling of aromatic aldehydes and reduction of aldehydes.

<span class="mw-page-title-main">Organozirconium and organohafnium chemistry</span>

Organozirconium chemistry is the science of exploring the properties, structure, and reactivity of organozirconium compounds, which are organometallic compounds containing chemical bonds between carbon and zirconium. Organozirconium compounds have been widely studied, in part because they are useful catalysts in Ziegler-Natta polymerization.

In organometallic chemistry, a transition metal indenyl complex is a coordination compound that contains one or more indenyl ligands. The indenyl ligand is formally the anion derived from deprotonation of indene. The η5-indenyl ligand is related to the η5cyclopentadienyl anion (Cp), thus indenyl analogues of many cyclopentadienyl complexes are known. Indenyl ligands lack the 5-fold symmetry of Cp, so they exhibit more complicated geometries. Furthermore, some indenyl complexes also exist with only η3-bonding mode. The η5- and η3-bonding modes sometimes interconvert.

<span class="mw-page-title-main">Rhodocene</span> Organometallic chemical compound

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<span class="mw-page-title-main">Titanocene pentasulfide</span> Chemical compound

Titanocene pentasulfide is the organotitanium compound with the formula (C5H5)2TiS5, commonly abbreviated as Cp2TiS5. This metallocene exists as a bright red solid that is soluble in organic solvents. It is of academic interest as a precursor to unusual allotropes of elemental sulfur as well as some related inorganic rings.

<span class="mw-page-title-main">Bis(cyclopentadienyl)titanium(III) chloride</span> Chemical compound

Bis(cyclopentadienyl)titanium(III) chloride, also known as the Nugent–RajanBabu reagent, is the organotitanium compound which exists as a dimer with the formula [(C5H5)2TiCl]2. It is an air sensitive green solid. The complex finds specialized use in synthetic organic chemistry as a single electron reductant.

Magnesocene, also known as bis(cyclopentadienyl)magnesium(II) and sometimes abbreviated as MgCp2, is an organometallic compound with the formula Mg(η5-C5H5)2. It is an example of an s-block main group sandwich compound, structurally related to the d-block element metallocenes, and consists of a central magnesium atom sandwiched between two cyclopentadienyl rings.

<span class="mw-page-title-main">Zirconocene</span> Chemical compound

Zirconocene is a hypothetical compound with 14 valence electrons, which has not been observed or isolated. It is an organometallic compound consisting of two cyclopentadienyl rings bound on a central zirconium atom. A crucial question in research is what kind of ligands can be used to stabilize the Cp2ZrII metallocene fragment to make it available for further reactions in organic synthesis.

<span class="mw-page-title-main">(Cyclopentadienyl)titanium trichloride</span> Chemical compound

(Cyclopentadienyl)titanium trichloride is an organotitanium compound with the formula (C5H5)TiCl3. It is a moisture sensitive orange solid. The compound adopts a piano stool geometry.

<span class="mw-page-title-main">(Cyclopentadienyl)zirconium trichloride</span> Chemical compound

(Cyclopentadienyl)zirconium trichloride is an organozirconium compound with the formula (C5H5)ZrCl3. It a moisture-sensitive white solid. The compound adopts a polymeric structure. The compound has been well studied spectroscopically.

<span class="mw-page-title-main">(Pentamethylcyclopentadienyl)titanium trichloride</span> Chemical compound

(Pentamethylcyclopentadienyl)titanium trichloride is an organotitanium compound with the formula Cp*TiCl3 (Cp* = C5(CH3)5). It is an orange solid. The compound adopts a piano stool geometry. An early synthesis involve the combination of lithium pentamethylcyclopentadienide and titanium tetrachloride.

<span class="mw-page-title-main">Transition metal phosphinimide complexes</span>

Transition metal phosphinimide complexes are metal complexes that contain phosphinimide ligands of the general formula NPR3 (R = organic substituent). Several coordination modes have been observed, including terminal and various bridging geometries. In the terminal bonding mode the M-N=P core is usually linear but some are quite bent. The preferred coordination type varies with the oxidation state and coligands on the metal and the steric and electronic properties of the R groups on phosphorus. Many transition metal phosphinimide complexes have been well-developed and, more recently, main group phosphinimide complexes have been synthesized.

References

  1. Zeinstra, J.D.; De Boer, J.L. (1973). "Structure of Cyclopentadienylcycloheptatrienyl-titanium". Journal of Organometallic Chemistry. 54: 207–211. doi:10.1016/S0022-328X(00)85010-X.
  2. Camargo, Luana C.; Briganti, Matteo; Santana, Francielli S.; Stinghen, Danilo; Ribeiro, Ronny R.; Nunes, Giovana G.; Soares, Jaísa F.; Salvadori, Enrico; Chiesa, Mario; Benci, Stefano; Torre, Renato; Sorace, Lorenzo; Totti, Federico; Sessoli, Roberta (2021). "Exploring the Organometallic Route to Molecular Spin Qubits: The [Cp Ti(cot)] Case". Angewandte Chemie International Edition. 60 (5): 2588–2593. doi:10.1002/anie.202009634. hdl: 2318/1765157 . PMID   33051985. S2CID   222351619.