Rhenium

Base Information

• Chemical Name: Rhenium
• CAS No.: 7440-15-5
• Molecular Formula: Re
• Molecular Weight: 186.21
• Hs Code.: 8112993090
• European Community (EC) Number: 231-124-5
• UNII: 7YHU292INY
• DSSTox Substance ID: DTXSID9064685
• Nikkaji Number: J95.327J
• Wikipedia: Rhenium
• Wikidata: Q737
• Mol file: 7440-15-5.mol

Synonyms:Rhenium

Chemical Property of Rhenium

Chemical Property:

• Appearance/Colour: gray powder
• Melting Point: 3180 °C(lit.)
• Boiling Point: 5596 °C(lit.)
• PSA: 0.00000
• Density: 21.04 g/cm³
• LogP: 0.00000
• Storage Temp.: Flammables area
• Water Solubility.: Insoluble in water.
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 186.955752
• Heavy Atom Count: 1
• Complexity: 0

Purity/Quality:

99.9% ^*data from raw suppliers

Rhenium ^*data from reagent suppliers

Safty Information:

• Pictogram(s): F, C
• Hazard Codes: C,F,Xi
• Statements: 34-11-36/38
• Safety Statements: 16-45-36/37/39-26-33-27

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Elements, Metallic
• Canonical SMILES: [Re]
• Recent ClinicalTrials: Rhenium Re 188 P2045 in Patients With Lung Cancer Who Have Received or Refused to Receive Prior Chemotherapy
• Recent EU Clinical Trials: A randomised phase II study of repeated Rhenium-188 HEDP combined with Docetaxel versus Docetaxel alone in castration resistant prostate cancer (CRPC) metastatic to bone’
• Physical properties: Rhenium ranges in color from silvery-white to gray to a black powder. It is a rather denseelement. As a refined metal, rhenium is ductile, but because it is rather rare, its properties havenot found many uses. Rhenium does have the widest range of valences. In addition to its commonvalences of 4, 6, and 7, it also has the uncommon valences of 2, –1, and –7.Rhenium has a high melting point of 3,180°C, a boiling point of 5,627°C, and a densityof 21.04 g/cm3.
• Uses: Electron tube and semiconductor applications, in alloys for electrical contacts, as catalyst; possibly in high tempereture thermocouples and to improve the workability of tungsten and molybdenum alloys; plating jewelry, medical instruments, high vac equipment, mirror backings. Small quantities of rhenium are alloyed with iron to form steel that is both hard and resistantto wear and high-temperatures. Because of its high melting point, rhenium is used inmany applications where long-wearing, high-temperature electrical components are required,such as electrical contacts and switches and high-temperature thermocouples. This physicalquality makes rhenium alloys ideal for use in rocket and missile engines. It is also used to formthe filaments in photographic flash lamps.Rhenium’s isotope (187Re) has a very long half-life and decays by both beta and alpharadiation at a very steady rate. This factor makes it useful as a standard to measure the age ofthe universe. Rhenium, 1% on 2.5mm alumina spheres is a heterogeneous catalyst used in synthetic chemistry. It is also tested for ammonia synthesis.

Refernces

A crystallographic and spectroscopic investigation of the stereochemistry of [MBr(CO)₃L₂] (M=Mn, Re) complexes

10.1016/j.jorganchem.2003.08.043

The research delves into the stereochemistry of [MBr(CO)3L2] complexes with M being either manganese (Mn) or rhenium (Re) and L representing triorganophosphine ligands. The study encompasses the synthesis, characterization, and structural analysis of these complexes, which are pivotal in organometallic chemistry. The researchers synthesized a variety of these complexes and employed elemental analysis, infrared (IR) spectroscopy, and 31P-nuclear magnetic resonance (NMR) spectroscopy for their characterization. The synthesis was executed based on a literature method, involving reactions in chloroform with different durations for Mn and Re complexes. To determine the stereochemistry, the researchers conducted single-crystal X-ray diffraction studies on select complexes, confirming the fac,cis geometries for Re(I) derivatives and those with bidentate ligands, and mer,trans geometries for the remaining Mn(I) derivatives. Additionally, IR spectroscopy was instrumental in analyzing the carbonyl stretching regions, aiding in the stereochemical assignments, while 31P-NMR provided insights into the ligand coordination to the metal center. This comprehensive approach underscored the reliability of single-crystal X-ray diffraction in confirming the stereochemistry, especially when compared to the potential inaccuracies of IR spectroscopy-based assignments.