How is rhenium used
Rhenium - chemical symbol Re, atomic number 75 - is a shiny white, air-resistant, hard, high-melting chemical element from the group of transition metals (group 7, manganese group), crystallizing in hexagonal close packing of spheres.
Overview: General data on rhenium
The Re atom - and thus the chemical element rhenium - has 75 positively charged protons in the atomic nucleus and - in the uncharged rhenium atom - the same number of electrons in the atomic shell.
The nuclear building blocks of the neutrons ensure that there are differences between the atomic nuclei. These types of atoms are under the term Rhenium isotopes summarized (isotope data: see there).
The earthly rhenium deposits consist of an isotope mixture of two different nuclides. The relative atomic mass of rhenium is given as 186.207 (1) u.
|re||75||[Xe] 4f14 5d5 6s2||2||2||6||2||6||10||2||6||10||10||2||6||5||2|
The following table lists the binding energies or the ionization energies IE of rhenium, i.e. the energy required in electron volts (eV) to separate a specific electron from a Re atom.
|1. IE:||7.83352 eV||2. IE:||eV||3. IE:||eV||4. IE:||eV||5. IE:||eV||6. IE:||eV|
Electron binding energy
The following table lists the electron binding energies of the individual rhenium electrons in the respective orbitals. The values are given in electron volts (eV).
Spectral lines of rhenium
The following figure shows an emission spectrum of rhenium with the characteristic spectral lines in the visible wavelength range between 400 and 700 nm:
Normal potential of rhenium:
|E.0 (V)||Nox||Name Ox.||Ox.||e-||⇔||Red.||Name Red.||Nox|
|-0,604||+ VII||Perrhenate anion||ReO4- + 2 H.2O||+ 7 e-||⇔||Re + 8 OH-||rhenium||0|
|0,2513||+ IV||Rhenium (IV) oxide||ReO2 + 4 H.+||+ 4 e-||⇔||Re + 2 H2O||rhenium||0|
|0,300||+ III||Rhenium (III) cation||re3+||+ 3 e-||⇔||Re (s)||rhenium||0|
|0,34||+ VII||Perrhenate anion||ReO4- + 8 H.+||+ 7 e-||⇔||Re + 4 H2O||rhenium||0|
|0,510||+ VII||Perrhenate anion||ReO4- + 4 H.+||+ 3 e-||⇔||ReO2 + 2 H.2O||Rhenium (IV) oxide||+ IV|
|0,768||+ VII||Perrhenate anion||ReO4- + 2 H.+||+ e-||⇔||ReO3 + H2O||Rhenium (VI) oxide||+ VI|
Material and physical properties of rhenium
The following overview lists some physical data and material properties of the pure rhenium metal.
External information offers
Group items - information
Lecture notes: Chemistry of Metals. University of Freiburg
Organometallic rhenium compounds
High-valent and organometallic technetium and rhenium compounds. Dissertation, 2010. FU Berlin
Rhenium and technetium phenylimido complexes with fluorinated ligands. Dissertation Chemistry, (2018). Free University of Berlin
Rhenium half sandwich complexes
Chiral rhenium half-sandwich complexes with phosphaferrocene ligands. Dissertation, 2007. University of Düsseldorf
Rhenium and rhenium compounds
Chemical database: physical and chemical properties, safety data sheets, commercially available substances and compounds; various search criteria including structure search
Rhenium and technetium complexes
New organometallic rhenium and technetium complexes. Dissertation, 2006. FU Berlin
Rhenium (IV) chloride complexes
Density functional theoretical investigation of the magnetic anisotropy of rhenium (IV) chloride complexes and their suitability as a component of multi-core single-molecule magnets. Dissertation, (2017). Technical University of Kaiserslautern
... and their applications. Dissertation, (2016). TU Munich
Rhenium nitrido complexes
Preparation and reactions with electrophilic boron compounds. Dissertation in chemistry, 2000. University of Tübingen
Category: Chemical elements
Updated on 14.04.2020.
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