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rhenium

Also known as Re, element 75, 75Re, nipponium

Rhenium is a chemical element; it has symbol Re and atomic number 75. It is a silvery-gray, heavy, third-row transition metal in group 7 of the periodic table. With an estimated average concentration of 1 part per billion (ppb), rhenium is one of the rarest elements in the Earth's crust. It has one of the highest melting and boiling points of any element. It resembles manganese and technetium chemically and is mainly obtained as a by-product of the extraction and refinement of molybdenum and copper ores. It shows in its compounds a wide variety of oxidation states ranging from −3 to +7.

OverviewAI-generated

Rhenium is a chemical element with the symbol Re and atomic number 75. Its standard atomic weight is 186.207. The element has an electronegativity of 1.9 and an ionic radius of 0.63. It commonly exhibits an oxidation state of 7. The electron configuration of rhenium is [Xe] 4f¹⁴ 5d⁵ 6s².

Rhenium was discovered in 1925. The IUPAC name for the element is rhenium. In chemical representations, it is identified by the canonical SMILES string [Re] and the Unicode character 錸. The PubChem CID for rhenium is 23947. It has a topological polar surface area of 0 and carries no charge. There are no hydrogen bond donors or acceptors associated with the neutral element.

Synthesized by Vinony from 25 facts across 4 sources: Wikidata, PubChem, PubMed, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Chemical data

Formula: Re
Molecular weight: 186.207 g/mol
IUPAC name: rhenium
SMILES: [Re]
InChIKey: WUAPFZMCVAUBPE-UHFFFAOYSA-N
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 0

via PubChem

Research

4,870 papers

Rhenium Radioisotopes for Medicine, a Focus on Production and Applications.ReviewMolecules (Basel, Switzerland) · 2022Uccelli L, Martini P, Urso L et al.DOI: 10.3390/molecules27165283
Fundamentals of Rhenium-188 Radiopharmaceutical Chemistry.ReviewMolecules (Basel, Switzerland) · 2023Kleynhans J, Duatti A, Bolzati CDOI: 10.3390/molecules28031487
Rhenium-Based Complexes and in Vivo Testing: A Brief History.ReviewChembiochem : a European journal of chemical biology · 2020Capper MS, Packman H, Rehkämper MDOI: 10.1002/cbic.202000117
Design of Rhenium Compounds in Targeted Anticancer Therapeutics.ReviewCurrent pharmaceutical design · 2019Collery P, Desmaele D, Vijaykumar VDOI: 10.2174/1381612825666190902161400
Anticancer and Antibiotic Rhenium Tri- and Dicarbonyl Complexes: Current Research and Future Perspectives.ReviewMolecules (Basel, Switzerland) · 2022Schindler K, Zobi FDOI: 10.3390/molecules27020539
Recent Development of Rhenium-Based Materials in the Application of Diagnosis and Tumor Therapy.ReviewMolecules (Basel, Switzerland) · 2023Qi Q, Wang Q, Li Y et al.DOI: 10.3390/molecules28062733
Rhenium-catalyzed deoxydehydration of diols and polyols.ReviewChemSusChem · 2015Dethlefsen JR, Fristrup PDOI: 10.1002/cssc.201402987
Monoclonal Antibodies Radiolabeling with Rhenium-188 for Radioimmunotherapy.ReviewBioMed research international · 2017Uccelli L, Martini P, Pasquali M et al.DOI: 10.1155/2017/5923609

via PubMed

~19 min read

Encyclopedic overview

21 sections

Contents

History
Characteristics
Isotopes
Compounds
Halides and oxyhalides
Oxides and sulfides
Other compounds
Organorhenium compounds
Nonahydridorhenate
Analytical chemistry of rhenium
Occurrence
Production
Applications
Alloys
Catalysts
Other uses
Precautions
Notes
References
Further reading
External links

Rhenium was originally discovered in 1908 by Masataka Ogawa, but he mistakenly assigned it as element 43 (now known as technetium) rather than element 75 and named it nipponium. It was rediscovered in 1925 by Walter Noddack, Ida Tacke and Otto Berg, who gave it its present name. It was named after the river Rhine in Europe, from which the earliest samples had been obtained and worked commercially.

Excerpted from Wikipedia’s “rhenium” article, available under the CC BY-SA 4.0 licence.