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Ag2Hg3

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Ag2Hg3
识别
CAS号 12249-78-4  checkY
性质
化学式 Ag2Hg3
摩尔质量 817.51 g·mol−1
外观 灰黑色粉末[1]
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

Ag2Hg3之间形成的金属间化合物,它是牙医银汞材料的组分之一。它的γ相由127 °C时的包晶反应[2]或[(PPh3)3Ag(μ-SPh)7Hg2]的热分解[1]产生,其晶体属立方晶系I23空间群。[2]在非均相Ag2Hg3中Hg的扩散系数为2.18×10−2exp(−9.58×103/RT)(64~120 °C,cm2/sec)。[3]它可以加热分解。[4]

参考文献

  1. ^ 1.0 1.1 Geetika Gupta, Jyotsna Chaturvedi, Subrato Bhattacharya. Geometrically unprecedented 3-, 5- and 7-membered Hg( ii )–Cu( i ) and Hg( ii )–Ag( i ) thiolate clusters: precursors to intermetallics. Dalton Transactions. 2015, 44 (19): 8932–8937 [2021-09-04]. ISSN 1477-9226. doi:10.1039/C4DT03500C (英语). 
  2. ^ 2.0 2.1 C. W. Fairhurst, J. B. Cohen. The crystal structures of two compounds found in dental amalgam: Ag 2 Hg 3 and Ag 3 Sn. Acta Crystallographica Section B. 1972-02-01, 28 (2): 371–378 [2021-09-04]. ISSN 0567-7408. doi:10.1107/S0567740872002432. (原始内容存档于2022-03-20). 
  3. ^ C. F. Timmons, A. L. Hines, G. R. Lightsey, T. Okabe. Diffusion of mercury in Ag2Hg3 from weight-loss data. Journal of Biomedical Materials Research. 1976-05, 10 (3): 371–375 [2021-09-04]. ISSN 0021-9304. doi:10.1002/jbm.820100306. (原始内容存档于2021-09-04) (英语). 
  4. ^ Khrapunov, V. E.; Abramov, A. S.; Zhunusova, G. Zh.; Sadvakasov, D. A.; Markin, I. A.; Klyashchitskaya, N. D. Decomposition of silver amalgam at decreased pressure. Kompleksnoe Ispol'zovanie Mineral'nogo Syr'ya. 2002, (4): 52–59. ISSN 0202-1382 (俄语). 

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