How is rhenium used

rhenium

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.

 

Electron configuration

symbolOZshort form1s2s2p3s3p3d4s4p4d4f5s5p5d5f6s6p6d6f
re75[Xe] 4f14 5d5 6s222626102610102652

 

Ionization energies

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 eV2. IE: eV3. IE: eV4. IE: eV5. IE: eV6. 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).

KLILIILIII
1s2s2p1/22p3/2
71676125271195910535

 

MIMIIMIIIMIVMV
3s3p1/23p3/23d3/23d5/2
29322682236719491883

 

NINIINIIINIVNVNVINVII
4s4p1/24p3/24d3/24d5/24f5/24f7/2
625,4518,7446,8273,9260,542,940,5

 

OIOIIOIIIOIVOV
5s5p1/25p3/25d3/25d5/2
8345,634,6

 

Further data

 

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:

 

 

Chemical data

 

Standard potentials

Normal potential of rhenium:

E.0 (V)NoxName Ox.Ox.e-Red.Name Red.Nox
-0,604+ VIIPerrhenate anionReO4- + 2 H.2O+ 7 e-Re + 8 OH-rhenium0
0,2513+ IVRhenium (IV) oxideReO2 + 4 H.++ 4 e-Re + 2 H2Orhenium0
0,300+ IIIRhenium (III) cationre3++ 3 e-Re (s)rhenium0
0,34+ VIIPerrhenate anionReO4- + 8 H.++ 7 e-Re + 4 H2Orhenium0
0,510+ VIIPerrhenate anionReO4- + 4 H.++ 3 e-ReO2 + 2 H.2ORhenium (IV) oxide+ IV
0,768+ VIIPerrhenate anionReO4- + 2 H.++ e-ReO3 + H2ORhenium (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

Manganese group
Lecture notes: Chemistry of Metals. University of Freiburg



Compound classes

Organometallic rhenium compounds
High-valent and organometallic technetium and rhenium compounds. Dissertation, 2010. FU Berlin

Phenylimido complexes
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

Rhenium-carbene complexes
... and their applications. Dissertation, (2016). TU Munich

Rhenium nitrido complexes
Preparation and reactions with electrophilic boron compounds. Dissertation in chemistry, 2000. University of Tübingen



mineralogy

 


Category: Chemical elements

Updated on 14.04.2020.

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