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五羰基溴化锝

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五羰基溴化锝
识别
CAS号 15841-97-199Tc)  checkY
性质
化学式 C5BrO5Tc
摩尔质量 316.95 g·mol−1
外观 无色晶体
密度 2.429 g·cm−3[1]
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

五羰基溴化锝是一种有机锝化合物,化学式为Tc(CO)5Br。它可由十羰基二锝四氯化碳中和反应制得;[2]或由高锝酸钾在压力容器内与甲酸氢溴酸的混合物反应得到。[1]甲酸在反应中作为还原剂和羰基化试剂,以六溴合锝(IV)酸钾为原料,在硫酸的存在下,常压可以得到五羰基溴化锝:[3]

HCOOH → CO + H2O
2 [TcBr6]2− + 13 CO + 3 H2O → 2 TcBr(CO)5 + 3 CO2 + 6 H+ + 10 Br

它在二乙二醇二甲醚中被ZnH3PO4还原,可以得到TcH(CO)5[4]

参考文献

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  1. ^ 1.0 1.1 G. V. Sidorenko, V. V. Gurzhii, A. E. Miroslavov, O. V. Sizova, S. V. Krivovichev, A. A. Lumpov, D. N. Suglobov. Crystal and molecular structure of [TcCl(CO)5] and [TcBr(CO)5]. Correlations with the reactivity and electronic structure. Radiochemistry. 2009-06, 51 (3): 237–243 [2020-12-09]. ISSN 1066-3622. doi:10.1134/S1066362209030047 (英语). 
  2. ^ J. C. Hileman, D. K. Huggins, H. D. Kaesz. Derivatives of Technetium Carbonyl. Synthesis and Properties of the Carbonyl Halides and the Pentacarbonyl Hydride. Inorganic Chemistry. 1962-11, 1 (4): 933–938 [2020-12-09]. ISSN 0020-1669. doi:10.1021/ic50004a048 (英语). 
  3. ^ Alexander E. Miroslavov, Henrik Braband, Georgii V. Sidorenko, Ekaterina S. Stepanova, Alexander A. Lumpov, Roger Alberto. Synthesis of [99TcX(CO)5] (X = Cl, Br, I) at ambient pressure. Journal of Organometallic Chemistry. 2018-09, 871: 56–59 [2020-12-09]. doi:10.1016/j.jorganchem.2018.06.028 (英语). 
  4. ^ Alexander E. Miroslavov, Anna P. Shishkina, Georgy V. Sidorenko, Vladislav V. Gurzhiy, Daniil A. Maltsev, Ekaterina V. Kurysheva. Hydrolysis of Hexacarbonyltechnetium(I) Cation: Formation and Structure of Technetium Carbonyl Hydride 99 Tc 3 H(CO) 14. Inorganic Chemistry. 2020-07-06, 59 (13): 9239–9243 [2020-12-09]. ISSN 0020-1669. doi:10.1021/acs.inorgchem.0c01145 (英语).  (Supp Info)