Rhenium trichloride

Rhenium trichloride

Chembox new
ImageFile =
ImageName = Rhenium Trichloride Crystal Structure
IUPACName = Rhenium(III) chloride
OtherNames = Rhenium trichloride
Section1 = Chembox Identifiers
CASNo = 13569-63-6

Section2 = Chembox Properties
Formula = ReCl3
MolarMass = 292.57 g/mol
Appearance = red, crystalline, nonvolatile solid
Density = 4800 kg/m³
Solubility = hydrolyzes to form Re2O3.xH2O.
MeltingPt = N/A
BoilingPt = 500 °C (decomposes)

Section3 = Chembox Structure
MolShape = (trimeric solid and in solution)
(dimeric in acetic acid)

Coordination = Octahedral
CrystalStruct = Double Layered Rhombohedral
Dipole =

Section7 = Chembox Hazards
ExternalMSDS = External MSDS
MainHazards = Corrosive (C)

Section8 = Chembox Other
OtherAnions = Rhenium tribromide
Rhenium triiodide
OtherCpds =

Rhenium trichloride (ReCl3) is a compound of rhenium and chlorine. It was first discovered in 1932 by Geilnann, Wriuce, and Biltz. [Geilnann, W.; Wriuce, F. W.; Biltz. W.: Nachr. Ges. Wiss. Gottingen 1932, 579.]

tructure and physical properties

The crystal structure of rhenium trichloride consists of well-defined Re3Cl9 units that are connected by chlorine atom bridges. The Re3Cl9 unit structure also applies to rhenium trichloride dissolved in a variety of solvents, with the only possible exception being the dimer structure when dissolved in acetic acid. The Re3Cl9 crystal structure has C3v symmetry.

Rhenium trichloride is comparatively non-volatile but produces a green vapour during strong heating. It may have a very small temperature-independent paramagnetism, but the susceptibility is ambiguous.Colton, R. Chemistry of rhenium and technetium. London: Interscience Publishers. 1965.]

Chemical properties

Rhenium trichloride prepared from rhenium pentachloride without further treatment is chemically reactive, but if it is vacuum sublimed at 500oC, then it becomes comparatively unreactive. However, x-ray diffraction tests show no observable difference in structure between the untreated and vacuum sublimed material.

The heat of oxidation according to the equation,
ReCl3(s) + 4OH- + 2OCl- --> ReO4- + 2H2O + 5Cl-
is 190.7 ± 0.2 kcal/mol.

Preparation

Rhenium trichloride is most efficiently prepared by the thermal decomposition of rhenium pentachloride in nitrogen. Other methods include reacting sulphuryl chloride with rhenium powder with or without the addition of aluminium chloride, the thermal decomposition of salts of hexachlororhenic(IV) acid, or the heating of Re2(O2CCH3)4Cl2 under HCl gas. [cite journal | author = Lincoln R.; Wilkinson, G. | journal = Inorg. Synth. | title = Trirhenium Nonachloride | year = 1980 | volume = 20 | pages = 44
doi = 10.1002/9780470132517.ch12
]

Uses

Rhenium trichloride is used as a starting material for synthesis of rhenium complexes. ReCl3 can react with peralkylated benzene-metal complexes that act as electron reservoirs.cite journal | author = Hamon, J-R, Astruc, D. | journal = Organometallics | title = Organometallic electron reservoirs. 38. Influence of steric bulk on Fischer-type syntheses of peralkylated electron-reservoir sandwiches [FeCp*(arene)] +: cleavage of alkyl groups and mechanistic implications | year = 1989 | volume = 8 | issue = 9 | pages = 2243–2247
doi = 10.1021/om00111a022
]

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Rhenium — tungsten ← rhenium → osmium Tc ↑ Re ↓ Bh …   Wikipedia

  • Rhenium pentachloride — Chembox new ImageName = IUPACName = Rhenium pentachloride OtherNames = Rhenium(V) chloride, Rhenium chloride, pentachlororhenium Section1 = Chembox Identifiers CASNo = 13596 35 5 Section2 = Chembox Properties Formula = ReCl5 MolarMass = 363.471… …   Wikipedia

  • Rhenium diboride — Chembox new ImageFile = Rhenium Diboride.jpg IUPACName = Rhenium Diboride OtherNames = Section1 = Chembox Identifiers CASNo = 12355 99 6 PubChem = SMILES = Section2 = Chembox Properties Formula = ReB2 MolarMass = 207.83 g/mol Appearance = Density …   Wikipedia

  • Dictionary of chemical formulas — This is a list of chemical compounds with chemical formulas and CAS numbers, indexed by formula. This complements alternative listings to be found at list of inorganic compounds, list of organic compounds and inorganic compounds by element. Table …   Wikipedia

  • Osmium — This article is about the chemical element. For other uses, see Osmium (disambiguation). rhenium ← osmium → iridium Ru ↑ Os ↓ Hs …   Wikipedia

  • Indium — Not to be confused with Iridium. cadmium ← indium → tin Ga ↑ In ↓ Tl …   Wikipedia

  • Antimony — This article is about the element. For the town, see Antimony, Utah. Not to be confused with Antinomy, a type of paradox. tin ← antimony → tellurium As ↑ Sb ↓ Bi …   Wikipedia

  • Phosphorus — This article is about the chemical element. For other uses, see Phosphorus (disambiguation). silicon ← phosphorus → sulfur …   Wikipedia

  • Olefin metathesis — or transalkylidenation is an organic reaction that entails redistribution of alkylene fragments by the scission of carbon carbon double bonds in olefins (alkenes).[1] Its advantages include the creation of fewer sideproducts and hazardous wastes …   Wikipedia

  • Dubnium — rutherfordium ← dubnium → seaborgium Ta ↑ Db ↓ (Upp) …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”