Cerocene

Last updated
Cerocene
Ce(C5H5)3.png
Names
Other names
Cerium cyclopentadienide
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 215-073-6
PubChem CID
  • InChI=1S/3C5H5.Ce/c3*1-2-4-5-3-1;/h3*1-5H;/q3*-1;+3 Yes check.svgY
    Key: KDGBXTFCUISDFL-UHFFFAOYSA-N Yes check.svgY
  • c1ccc[cH-]1.c2ccc[cH-]2.c3ccc[cH-]3.[Ce+3]
Properties
Ce(C5H5)3
Molar mass 335.401
Appearanceorange-red solid [1]
Melting point 435 °C (Decomposes slightly when melted)
Boiling point 230 °C
(10-3~10-4mmHg, sublimates)
Related compounds
Related compounds
 Cyclopentadiene
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Cerocene is a metal organic compound of cerium with the chemical formula Ce(C5H5)3. It is the most unstable of the lanthanocenes in dry air. It, and the other lanthanocenes, is different from cyclopentadiene complexes of general transition metals and is considered to be ionically bonded. [1]

Contents

Preparation

Cerocene can be obtained by reacting anhydrous cerium chloride and sodium cyclopentadienide in a tetrahydrofuran medium: [1]

3C5H5Na + CeCl3 → (C5H5)3Ce+ 3 NaCl

Chemical properties

Cerocene decomposes when exposed to water to produce cerium(III) hydroxide and cyclopentadiene.

There are literature reports on the synthesis [2] and properties [3] of the tetravalent cerium compound Ce(C5H5)4, but it has been pointed out that the synthesis method is not credible. [4] [5]

Related Research Articles

<span class="mw-page-title-main">Praseodymium(IV) oxide</span> Chemical compound

Praseodymium(IV) oxide is an inorganic compound with chemical formula PrO2.

Terbium(IV) oxide is an inorganic compound with a chemical formula TbO2. It can be produced by oxidizing terbium(III) oxide by oxygen gas at 1000 atm and 300 °C.

<span class="mw-page-title-main">Cerium(IV) fluoride</span> Chemical compound

Cerium(IV) fluoride is an inorganic compound with a chemical formula CeF4. It is a strong oxidant that appears as a white crystalline material. Cerium(IV) fluoride has an anhydrous form and a monohydrate form.

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

Scandium perchlorate is an inorganic compound with the chemical formula Sc(ClO4)3.

<span class="mw-page-title-main">Neodymium(III) hydroxide</span> Chemical compound

Neodymium(III) hydroxide is an insoluble inorganic compound with the chemical formula Nd(OH)3.

<span class="mw-page-title-main">Samarium(III) hydroxide</span> Chemical compound

Samarium(III) hydroxide is an inorganic compound with chemical formula Sm(OH)3.

Thulium(II) chloride is an inorganic compound with the chemical formula TmCl2.

<span class="mw-page-title-main">Europium(III) hydroxide</span> Chemical compound

Europium(III) hydroxide is an inorganic compound with a chemical formula Eu(OH)3.

<span class="mw-page-title-main">Erbium(III) hydroxide</span> Chemical compound

Erbium(III) hydroxide is an inorganic compound with chemical formula Er(OH)3.

<span class="mw-page-title-main">Dysprosium(III) hydroxide</span> Chemical compound

Dysprosium(III) hydroxide is an inorganic compound with the chemical formula Dy(OH)3.

<span class="mw-page-title-main">Thulium(III) hydroxide</span> Chemical compound

Thulium(III) hydroxide is an inorganic compound with the chemical formula Tm(OH)3.

<span class="mw-page-title-main">Terbium(III) hydroxide</span> Chemical compound

Terbium(III) hydroxide is an inorganic compound with chemical formula Tb(OH)3.

<span class="mw-page-title-main">Terbium(IV) fluoride</span> Chemical compound

Terbium(IV) fluoride is an inorganic compound with a chemical formula TbF4. It is a white solid that is a strong oxidizer. It is also a strong fluorinating agent, emitting relatively pure atomic fluorine when heated, rather than the mixture of fluoride vapors emitted from cobalt(III) fluoride or cerium(IV) fluoride. It can be produced by the reaction between very pure terbium(III) fluoride and xenon difluoride, chlorine trifluoride or fluorine gas:

Praseodymium(III) carbonate is an inorganic compound, with a chemical formula of Pr2(CO3)3. The anhydrous form is olive green, and many of its hydrates such as heptahydrate and octahydrate are known. They are all insoluble in water.

<span class="mw-page-title-main">Europium compounds</span> Compounds with at least one europium atom

Europium compounds are compounds formed by the lanthanide metal europium (Eu). In these compounds, europium generally exhibits the +3 oxidation state, such as EuCl3, Eu(NO3)3 and Eu(CH3COO)3. Compounds with europium in the +2 oxidation state are also known. The +2 ion of europium is the most stable divalent ion of lanthanide metals in aqueous solution. Many europium compounds fluoresce under ultraviolet light due to the excitation of electrons to higher energy levels. Lipophilic europium complexes often feature acetylacetonate-like ligands, e.g., Eufod.

<span class="mw-page-title-main">Terbium compounds</span> Chemical compounds with at least one terbium atom

Terbium compounds are compounds formed by the lanthanide metal terbium (Tb). Terbium generally exhibits the +3 oxidation state in these compounds, such as in TbCl3, Tb(NO3)3 and Tb(CH3COO)3. Compounds with terbium in the +4 oxidation state are also known, such as TbO2 and BaTbF6. Terbium can also form compounds in the 0, +1 and +2 oxidation states.

<span class="mw-page-title-main">Lutetium(III) iodide</span> Chemical compound

Lutetium(III) iodide or lutetium iodide is an inorganic compound consisting of iodine and lutetium, with the chemical formula of LuI3.

<span class="mw-page-title-main">Cerium(III) acetate</span> Chemical compound

Cerium acetate is an inorganic compound with the chemical formula of Ce(CH3COO)3. It is a white powder that is soluble in water. Its 1.5 hydrate loses water at 133°C to obtain an amorphous anhydrous form, and the amorphous phase changes to crystal at 212°C, and phase changes again at 286°C.

<span class="mw-page-title-main">Holmium(III) hydroxide</span> Chemical compound

Holmium(III) hydroxide is an inorganic compound with the chemical formula Ho(OH)3.

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

Promethocene is a metal-organic compound of promethium with the chemical formula Pm(C5H5)3. It is radioactive and stable in dry air. Promethocene is different from cyclopentadiene complexes of general transition metals and is considered to be ionically bonded. Theoretical calculations show that its Pm natural population analysis (NPA) electronic configuration is 6s0.115d1.194f2.21.

References

  1. 1 2 3 《无机化学丛书》. 第七卷 钪 稀土元素. 易宪武 等主编. 科学出版社. 2.3.7 稀土元素有机化合物. P260~261. 1.π络合物
  2. ↑ B.L. Kalsotra, S.P. Anand, R.K. Multani, B.D. Jain (Apr 1971). "Tetracyclopentadienyl and tetraindenyl compounds of cerium(IV)". Journal of Organometallic Chemistry. 28 (1): 87–89. doi:10.1016/S0022-328X(00)81578-8. Archived from the original on 2018-06-29. Retrieved 2019-12-19.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. ↑ 任镜清, 徐光宪. 四茂铈(Ce(C5H5)4)的电子结构和化学键[J]. 科学通报, 1985(19):23-28.
  4. ↑ G.B. Deacon, T.D. Tuong, D.G. Vince (Jan 1983). "Refutation of the synthesis of tetrakis(cyclopentadienyl)cerium(IV)". Polyhedron. 2 (9): 969–970. doi:10.1016/S0277-5387(00)81419-9. Archived from the original on 2018-06-01. Retrieved 2019-12-19.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  5. ↑ Reiner Anwander, Michael Dolg, Frank T. Edelmann (2017). "The difficult search for organocerium( iv ) compounds". Chemical Society Reviews. 46 (22): 6697–6709. doi:10.1039/C7CS00147A. ISSN   0306-0012 . Retrieved 2019-12-19.{{cite journal}}: CS1 maint: multiple names: authors list (link)
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.