Tungsten diselenide

Base Information

• Chemical Name: Tungsten diselenide
• CAS No.: 12067-46-8
• Molecular Formula: Se₂W
• Molecular Weight: 341.77
• European Community (EC) Number: 235-078-7
• DSSTox Substance ID: DTXSID8065240
• Wikipedia: Tungsten_diselenide,Tungsten(IV) selenide
• Wikidata: Q2592220
• Mol file: 12067-46-8.mol

Synonyms:Tungsten selenide;Tungsten diselenide;12067-46-8;Tungsten(IV) selenide;bis(selanylidene)tungsten;Tungsten selenide (WSe2);WSe2 Crystal;EINECS 235-078-7;Tungsten( cento) selenide;DTXSID8065240;MFCD00049703;AKOS024256371;Tungsten diselenide, Crystal, 99.995%;LS-185692;Chromium Fluoride (CrF3) Sputtering Targets;Q2592220

Chemical Property of Tungsten diselenide

Chemical Property:

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• PSA: 0.00000
• Density: g/cm³
• LogP: -0.53660
• Water Solubility.: Insoluble in water.
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 343.78398
• Heavy Atom Count: 3
• Complexity: 18.3

Purity/Quality:

99.99%, ^*data from raw suppliers

Tungsten diselenide Crystal, 99.995% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Metals -> Metals, Inorganic Compounds
• Canonical SMILES: [Se]=[W]=[Se]
• Uses: Tungsten(IV) selenide is used as an important compound in electrochemical solar cells. It acts as a stable semiconductor.

Technology Process of Tungsten diselenide

There total 24 articles about Tungsten diselenide which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 90.0%

bis(tert-butyl) diselenide (34172-61-7) + tungsten(IV) chloride (13470-13-8) → tungsten diselenide (12067-46-8)

Guidance literature:

With n-Dodecylamine; at 150 - 225 ℃; for 6h; Inert atmosphere;

DOI:10.1021/cm400790z

Reference yield: 60.0%

selenourea (630-10-4) + ortho-tungstic acid → tungsten diselenide (12067-46-8)

Guidance literature:

In neat (no solvent, solid phase); under N2; mixt. of W compd. and selenourea (1:48) heated at 773 K for 3 h, cooling to room temp.;

DOI:10.1039/c1dt10652j

Reference yield:

selenium (7782-49-2) + tungsten (7440-33-7) → tungsten diselenide (12067-46-8)

Guidance literature:

selenium; tungsten; In neat (no solvent, solid phase); at 900 ℃; for 12h; Inert atmosphere;

In neat (no solvent, solid phase); at 1150 ℃; for 0.166667h; under 375038 Torr; Inert atmosphere;

DOI:10.1016/j.jallcom.2017.06.074

upstream raw materials:

selenium

tungsten

selenourea

selenium dimer

Refernces

• 1、 Kim, Eunpa,Ko, Changhyun,Kim, Kyunghoon,Chen, Yabin,Suh, Joonki,Ryu, Sang-Gil,Wu, Kedi,Meng, Xiuqing,Suslu, Aslihan,Tongay, Sefaattin,Wu, Junqiao,Grigoropoulos, Costas P.. "Site Selective Doping of Ultrathin Metal Dichalcogenides by Laser-Assisted Reaction". . p. 341 - 346. Retrieved 2016.
• 2、 Dutrizac, J. E.. "". . p. 341 - 353. Retrieved 1973.
• 3、 Zou, Meiling,Zhang, Junfeng,Zhu, Han,Du, Mingliang,Wang, Qingfa,Zhang, Ming,Zhang, Xiangwen. "A 3D dendritic WSe2 catalyst grown on carbon nanofiber mats for efficient hydrogen evolution". . p. 12149 - 12153. Retrieved 2015.
• 4、 Chandra,Srivastava,Sahu. "ELECTRODEPOSITED TUNGSTEN SELENIDE FILMS.". . p. 497 - 503. Retrieved 1985.
• 5、 Matte, H. S. S. Ramakrishna,Plowman, Blake,Datta, Ranjan,Rao. "Graphene analogues of layered metal selenides". . p. 10322 - 10325. Retrieved 2011.
• 6、 Chakravarty, Disha,Late, Dattatray J.. "Exfoliation of bulk inorganic layered materials into nanosheets by the rapid quenching method and their electrochemical performance". . p. 1973 - 1980. Retrieved 2015.
• 7、 Geisenhoff, Jessica Q.,Tamura, Ashley K.,Schimpf, Alina M.. "Using ligands to control reactivity, size and phase in the colloidal synthesis of WSe2 nanocrystals". . p. 8856 - 8859. Retrieved 2019.
• 8、 Nath,Rao. "MoSe2 and WSe2 nanotubes and related structures". . p. 2236 - 2237. Retrieved 2001.
• 9、 Kwak, In Hye,Kwon, Ik Seon,Lee, Jong Hyun,Lim, Young Rok,Park, Jeunghee. "Chalcogen-vacancy group VI transition metal dichalcogenide nanosheets for electrochemical and photoelectrochemical hydrogen evolution". . p. 101 - 109. Retrieved 2021.
• 10、 Brontvein, Olga,Albu-Yaron, Ana,Levy, Moshe,Tenne, Reshef,Stroppa, Daniel G.,Houben, Lothar,Popovitz-Biro, Ronit,Feuerman, Daniel,Gordon, Jeffrey M.. "New high-temperature Pb-catalyzed synthesis of inorganic nanotubes". . p. 16379 - 16386,8. Retrieved 2012.