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二硒化氫

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二硒化氫
IUPAC名
Dihydrogen diselenide
識別
PubChem 5248613
SMILES
InChI
InChIKey AVJWYAUVPWRPJX-UHFFFAOYSA-N
ChEBI 50476
性質
化學式 H2Se2
摩爾質量 159.94 g·mol−1
外觀 油狀液體
密度 g cm-3
危險性
閃點 易燃
相關物質
相關化學品 過氧化氫
硒化氫
二硫化氫
若非註明,所有數據均出自一般條件(25 ℃,100 kPa)下。

二硒化氫(英語:Hydrogen diselenide),又稱乙硒烷二硒烷[1],是一種無機硒化合物,其化學式為H2Se2[2],亦可計為(SeH)2,其結構類似於過氧化氫(H2O2)、硫氧化氫(H2SO)與二硫化氫(H2S2),但比前三者更接近90度。二硒化氫常溫下容易分解為硒化氫(H2Se)和硒單質而無法穩定存在,但可以在一些溶液中存在[3]。二硒化氫可以用在一些有機合成的中間過程[4][5]

結構

二硒化氫分子的兩面角為89.9度,H-Se-Se鍵角為90.5度,H-Se鍵長為1.536,Se-Se鍵長為2.380埃。二硒化氫扭轉運動電勢能壘高度與硫氧化氫類似,而扭轉穿隧的分解則與二硫化氫有相同的觀測值[6]。此外,二硒化氫和二碲化氫(hydrogen ditelluride)[7]分子結構都有轉動屏障的現象。[8]

結構類似的化合物

還有一些硒化合物的結構類似過氧化氫,如硒氧化氫、硒硫化氫,但他們都不穩定。

參考文獻

  1. ^ 化學命名原則 (PDF). 國立編譯館. 2011-04-01 [2016-02-27]. (原始內容存檔 (PDF)於2016-03-22). 
  2. ^ Macintyre, J.E. Dictionary of Inorganic Compounds. Taylor & Francis. 1992: 293. ISBN 9780412301209. 
  3. ^ Shaw, B.L. and Stavely, L.A.K. Inorganic Hydrides: The Commonwealth and International Library: Chemistry Division. Commonwealth and international library: Chemistry division. Elsevier Science. 2013: 76. ISBN 9781483160320. 
  4. ^ Craig A. Bayse and Andrea Pavlou. Tuning the activity of glutathione peroxidase mimics through intramolecular Se⋯N,O interactions: A DFT study incorporating solvent-assisted proton exchange (SAPE), 9. Org. Biomol. Chem.: 8006. 2011-05-25. doi:10.1039/c1ob05827d. 
  5. ^ Dinesh R. Garud, Masaki Makimuraa and Mamoru Koketsu. Dinesh R. GarudCurrent address: Department of Chemistry, Sir Parashurambhau College, Tilak road, Pune 411030. India., Masaki Makimura and Mamoru Koketsu. Synthetic approaches to selenacephams and selenacephems via a cleavage of diselenide and selenium anion 35. New J. Chem.: 581. 2010-10-12. doi:10.1039/c0nj00782j. 
  6. ^ Gottselig, Michael; Quack, Martin; Willeke, Martin. Mode-selective stereomutation tunneling as compared to parity violation in hydrogen diselenide isotopomers1,2,3H280Se2. Israel Journal of Chemistry (Wiley-Blackwell). 2003, 43 (3-4): 353–362. ISSN 0021-2148. doi:10.1560/1khd-g0yt-3yeu-n16p. 
  7. ^ Cornelis E. C. A. Hop, Marco A. Medina. H2Te2 Is Stable in the Gas Phase 116 (7). J. Am. Chem. Soc.: pp 3163–3164. April 1994. doi:10.1021/ja00086a072. 
  8. ^ Ewig, Carl S.; Mei, Elizabeth H.; Van Wazer, John R. Rotational barriers in H2Se2and H2Te2. Molecular Physics (Informa UK Limited). 1980, 40 (1): 241–245. ISSN 0026-8976. doi:10.1080/00268978000101431. 
  1. Héctor García-Marín, John C. van der Toorn, José A. Mayoral, José I. García and Isabel W. C. E. Arends. Glycerol-based solvents as green reaction media in epoxidations with hydrogen peroxide catalysed by bis[3,5-bis(trifluoromethyl)-diphenyl] diselenide, Green Chem., 2009, 11, 1605.doi:10.1039/b913052g
  2. Charlotte Gabel-Jensen, Kristoffer Lunøe and Bente Gammelgaard. Formation of methylselenol, dimethylselenide and dimethyldiselenide in in vitro metabolism models determined by headspace GC-MS, Metallomics, 2010, 2, 167.doi:10.1039/b914255j
  3. Wei-Wei Xiong, Jian-Rong Li, Mei-Ling Feng and Xiao-Ying Huang. Solvothermal syntheses, crystal structures, and characterizations of a series of one-dimensional organic-containing gallium polyselenides, CrystEngComm, 2011, 13, 6206.doi:10.1039/c1ce05507k
  4. Xin Huang, Xiaoman Liu, Quan Luo, Junqiu Liu and Jiacong Shen. Artificial selenoenzymes: Designed and redesigned, Chem. Soc. Rev., 2011, 40, 1171.doi:10.1039/c0cs00046a
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二硒化氫
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