二硒化氢

二硒化氢
二硒化氢的球棍模型	二硒化氢的空间填充模型
	IUPAC名; Dihydrogen diselenide
识别
CAS号	24765-45-5
PubChem	5248613
SMILES	[SeH][SeH];
InChI	1S/H2Se2/c1-2/h1-2H;
InChIKey	AVJWYAUVPWRPJX-UHFFFAOYSA-N
ChEBI	50476
性质
化学式	H2Se2
摩尔质量	159.94 g·mol−1
外观	油状液体
密度	g cm-3
危险性
闪点	易燃
相关物质
相关化学品	过氧化氢; 硒化氢 ; 二硫化氢
	若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。

二硒化氢（英语：Hydrogen diselenide），又称乙硒烷或二硒烷^[1]，是一种无机硒化合物，其化学式为H₂Se₂^[2]，亦可计为(SeH)₂，其结构类似于过氧化氢（H₂O₂）、硫氧化氢（H₂SO）与二硫化氢（H₂S₂），但比前三者更接近90度。用铝还原二氧化硒的盐酸溶液，放出的气体与乙酸铅反应生成的黑色沉淀中含有PbSe₂，证明二硒化氢存在于气体混合物当中。^[3]。二硒化氢常温下容易分解为硒化氢（H₂Se）和硒单质而无法稳定存在，但可以在一些溶液中存在^[3]。二硒化氢可以用在一些有机合成的中间过程^[4]^[5]。

结构

二硒化氢分子的两面角为89.9度，H-Se-Se键角为90.5度，H-Se键长为1.536埃，Se-Se键长为2.380埃。二硒化氢扭转运动电势能垒高度与硫氧化氢类似，而扭转穿隧的分解则与二硫化氢有相同的观测值^[6]。此外，二硒化氢和二碲化氢（hydrogen ditelluride）^[7]的分子结构都有转动屏障的现象。^[8]

结构类似的化合物

还有一些硒化合物的结构类似过氧化氢，如硒氧化氢、硒硫化氢，但他们都不稳定。

参考文献

^ 化學命名原則 (PDF). 国立编译馆. 2011-04-01 [2016-02-27]. （原始内容存档 (PDF)于2016-03-22）.
^ Macintyre, J.E. Dictionary of Inorganic Compounds. Taylor & Francis. 1992: 293. ISBN 9780412301209.
^ ^3.0 ^3.1 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.
^ 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.
^ 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. |year=与|date=不匹配 (帮助);
^ 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.
^ 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.
^ 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.

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
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
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
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

[1] 化學命名原則 (PDF). 国立编译馆. 2011-04-01 [2016-02-27]. （原始内容存档 (PDF)于2016-03-22）.

[macintyre1992dictionary-2] Macintyre, J.E. Dictionary of Inorganic Compounds. Taylor & Francis. 1992: 293. ISBN 9780412301209.

[shaw2013inorganic-3] 3.0 ^3.1 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.

[CraigBayse-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.

[Dinesh_R._Garud-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. |year=与|date=不匹配 (帮助);

[Gottselig_Quack_Willeke_2003_pp._353–362-6] 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.

[Cornelis_E._C._A._Hop,_Marco_A._Medina-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.

[Ewig_Mei_Van_Wazer_1980_pp._241–245-8] 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.

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