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{{chembox |
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| Verifiedfields = changed |
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| verifiedrevid = 364359765 |
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| Watchedfields = changed |
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| Name = Mercury(II) selenide |
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| verifiedrevid = 439404855 |
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| ImageFile = Mercury(II)-selenide-unit-cell-3D-ionic.png |
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| Name = Mercury(II) selenide |
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<!-- | ImageSize = 200px --> |
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| ImageName = Mercury(II) selenide unit cell |
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| ImageFile = Mercury(II)-selenide-unit-cell-3D-balls.png |
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| ImageName = Mercury(II) selenide unit cell |
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| IUPACName = Mercury selenide |
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| IUPACName = Mercury selenide |
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| OtherNames = |
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| OtherNames = |
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| Section1 = {{Chembox Identifiers |
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|Section1={{Chembox Identifiers |
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| CASNo = 20601-83-6 |
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| CASNo = 20601-83-6 |
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| CASNo_Ref = {{cascite}} |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| RTECS = |
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| EINECS = 243-910-5 |
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| RTECS = |
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| PubChem = 88609 |
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| SMILES = = |
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| InChI = 1S/Hg.Se |
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| StdInChI=1S/Hg.Se |
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| StdInChIKey = YQMLDSWXEQOSPP-UHFFFAOYSA-N |
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| Section2 = {{Chembox Properties |
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|Section2={{Chembox Properties |
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| Formula = HgSe |
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| Formula = HgSe |
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| MolarMass = 279.55 g/mol |
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| MolarMass = 279.55 g/mol |
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| Appearance = grey-black solid |
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| Appearance = grey-black solid |
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| Density = 8.3 g/cm<sup>3</sup> |
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| Odor = odorless |
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| Density = 8.266 g/cm<sup>3</sup> |
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| Solubility = insoluble |
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| Solubility = insoluble |
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| MeltingPt = 1270 K |
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| MeltingPtK = 1270 |
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| Section3 = {{Chembox Structure |
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|Section3={{Chembox Structure |
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| Coordination = |
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| Coordination = |
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| CrystalStruct = ] |
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| CrystalStruct = ] |
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| Section4 = {{Chembox Thermochemistry |
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|Section4={{Chembox Thermochemistry |
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| DeltaHf = 247 kJ/mol |
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| DeltaHf = 247 kJ/mol |
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| Entropy = |
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| Entropy = |
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| HeatCapacity = 178 J kg<sup>−1</sup> K<sup>−1</sup> |
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| HeatCapacity = 178 J kg<sup>−1</sup> K<sup>−1</sup> |
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| Section7 = {{Chembox Hazards |
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|Section7={{Chembox Hazards |
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| ExternalMSDS = |
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| ExternalSDS = |
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| GHSPictograms = {{GHS06}}{{GHS08}}{{GHS09}} |
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| EUIndex = 080-002-00-6 |
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| GHSSignalWord = Danger |
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| EUClass = Very toxic ('''T+''')<br/>Dangerous for the environment ('''N''') |
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| HPhrases = {{H-phrases|300|310|330|373|410}} |
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| RPhrases = {{R26/27/28}}, {{R33}}, {{R50/53}} |
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| PPhrases = {{P-phrases|260|262|264|270|271|273|280|284|301+310|302+350|304+340|310|314|320|321|322|330|361|363|391|403+233|405|501}} |
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| SPhrases = {{S1/2}}, {{S13}}, {{S28}}, {{S45}}, {{S60}}, {{S61}} |
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| NFPA-H = |
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| NFPA-H = 3 |
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| NFPA-F = |
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| NFPA-F = 0 |
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| NFPA-R = |
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| NFPA-R = 1 |
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| FlashPt = Non-flammable |
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| FlashPt = Non-flammable |
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| PEL = |
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| PEL = |
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| Section8 = {{Chembox Related |
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|Section8={{Chembox Related |
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| OtherAnions = ]<br/>]<br/>] |
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| OtherAnions = ]<br/>]<br/>] |
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| OtherCations = ]<br/>] |
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| OtherCations = ]<br/>] |
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| OtherCpds = |
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| OtherCompounds = |
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'''Mercury selenide''' (HgSe) is a chemical compound of ] and ]. It is a grey-black ]line solid ] with a sphalerite structure. The ] is 0.608 nm. |
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'''Mercury selenide''' (HgSe; sometimes '''mercury(II) selenide''') is a chemical compound of ] and ]. It is a grey-black ]line solid ] with a sphalerite structure. The ] is 0.608 nm. |
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HgSe occurs naturally as the mineral ], and is a component of the "intimate mixture" of HgSe and Se known as HgSe<sub>2</sub>.<ref>{{cite journal|journal=Inorg. Chem.|year=1997|volume=36|pages=942–943|title=Different Products from the Chemical and Electrochemical Reduction of 'HgSe<sub>2</sub>': <sub>2</sub> and <sub>2</sub>·en|first1=Chang-Woo|last1=Park|first2=Donna M.|last2=Smith|first3=Michael A.|last3=Pell|first4=James A.|last4=Ibers|issue=5 |doi=10.1021/ic960786v }}</ref> |
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Mercury selenide can also refer to the following chemical compounds: HgSe<sub>2</sub> and HgSe<sub>8</sub>. HgSe is strictly mercury(II) selenide. |
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Along with other II-VI compounds, ] of HgSe can be formed. |
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HgSe occurs naturally as the mineral ]. |
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Along with other II-VI compounds, colloidal nanocrystals of HgSe can be formed. |
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==Applications== |
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==Applications== |
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==Toxicity== |
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==Toxicity== |
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Toxic ] fumes can be evolved on exposure to acids. HgSe is non-toxic as long as it is not ingested due to its insolubility. |
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HgSe is non-toxic so long as it is not ingested due to its insolubility. Toxic ] fumes can be evolved on exposure to acids. HgSe is a relatively stable compound which might mean that it is less toxic than elemental mercury or many organometallic mercury compounds. Selenium's ability to complex with mercury has been proposed as a reason for the lack of mercury toxicity in deep sea fish despite high mercury levels.<ref>^ Watanabe C (2002). "Modification of mercury toxicity by selenium: practical importance?" (Free full text). The Tohoku Journal of Experimental Medicine 196 (2): 71–7. doi:10.1620/tjem.196.71. PMID 12498318.</ref> |
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HgSe is forms large insoluble clusters with proteins during digestion, and a very precise co-administration of selenium during mercury ingestion has shown to reduce the resulting intoxication. The effect is too finicky for any practical use, but selenium's ability to complex mercury has been proposed to explain why relatively high mercury levels do not intoxicate deep-sea fish.<ref>{{Cite journal | last1 = Watanabe | first1 = C. | title = Modification of Mercury Toxicity by Selenium: Practical Importance? | doi = 10.1620/tjem.196.71 | journal = The Tohoku Journal of Experimental Medicine | volume = 196 | issue = 2 | pages = 71–77 | year = 2002 | pmid = 12498318| doi-access = free }}</ref> |
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==See also== |
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==See also== |
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==References== |
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==References== |
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<references /> |
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{{Citation style|date=September 2007}} |
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* {{Cite journal | last1 = Nelson | first1 = D. | last2 = Broerman | first2 = J. | last3 = Paxhia | first3 = E. | last4 = Whitsett | first4 = C. | title = Resonant Phonon Scattering in Mercury Selenide | doi = 10.1103/PhysRevLett.22.884 | journal = Physical Review Letters | volume = 22 | issue = 17 | pages = 884 | year = 1969 |bibcode = 1969PhRvL..22..884N }} |
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{{reflist}} |
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* {{Cite journal | last1 = Jayaraman | first1 = A. | last2 = Klement | first2 = W. | last3 = Kennedy | first3 = G. | doi = 10.1103/PhysRev.130.2277 | title = Melting and Polymorphic Transitions for Some Group II-VI Compounds at High Pressures | journal = Physical Review | volume = 130 | issue = 6 | pages = 2277 | year = 1963 |bibcode = 1963PhRv..130.2277J }} |
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* Resonant Phonon Scattering in Mercury Selenide, Donald A. Nelson, J. G. Broerman, E. C. Paxhia, and Charles R. Whitsett, Phys. Rev. Lett. vol. 22, pp. 884–887 (1969) {{doi|10.1103/PhysRevLett.22.884}} |
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* {{Cite journal | last1 = Gawlik | first1 = K. -U. | last2 = Kipp | first2 = L. | last3 = Skibowski | first3 = M. | last4 = Orłowski | first4 = N. | last5 = Manzke | first5 = R. | title = HgSe: Metal or Semiconductor? | doi = 10.1103/PhysRevLett.78.3165 | journal = Physical Review Letters | volume = 78 | issue = 16 | pages = 3165 | year = 1997 |bibcode = 1997PhRvL..78.3165G | url = http://bib-pubdb1.desy.de/record/329689/files/document%20%282%29.pdf }}. |
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* Melting and Polymorphic Transitions for Some Group II-VI Compounds at High Pressures, A. Jayaraman, W. Klement, Jr., and G. C. Kennedy, Phys. Rev. vol. 130, pp. 2277–2283 (1963) {{doi|10.1103/PhysRev.130.2277}} |
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* {{Cite journal | last1 = Kumazaki | first1 = K. | doi = 10.1016/0022-0248(90)91059-Y | title = Dielectric properties of narrow-gap semiconductors | journal = Journal of Crystal Growth | volume = 101 | issue = 1–4 | pages = 687–690 | year = 1990 | bibcode = 1990JCrGr.101..687K }} |
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* HgSe: Metal or Semiconductor?, K.-U. Gawlik, L. Kipp, and M. Skibowski, N. Orłowski and R. Manzke, Phys. Rev. Lett. vol. 78, pp. 3165–3168 (1997) {{doi|10.1103/PhysRevLett.78.3165}}. |
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* Dielectric properties of narrow-gap semiconductors, K. Kumazaki, Journal of Crystal Growth Volume 101, Issues 1-4 pages 687-690 (1990) {{doi|10.1016/0022-0248(90)91059-Y}} |
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* SNV (1991) Guidelines on measures and methods for heavy metal emissions control. Solna, The Swedish Environmental Protection Agency – Naturvårdsverket. |
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* SNV (1991) Guidelines on measures and methods for heavy metal emissions control. Solna, The Swedish Environmental Protection Agency – Naturvårdsverket. |
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==External links== |
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==External links== |
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* http://ctdp.ensmp.fr/species/Tiemannite.html |
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* https://web.archive.org/web/20051019034837/http://ctdp.ensmp.fr/species/Tiemannite.html |
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{{Mercury compounds}} |
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{{Mercury compounds}} |
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{{Selenides}} |
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{{DEFAULTSORT:Mercury Selenide}} |
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{{DEFAULTSORT:Mercury Selenide}} |
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