五甲基钽

化合物

五甲基钽是一种有机钽化合物英语Organotantalum chemistry,化学式为Ta(CH3)5,它有可能在熔化时爆炸。[4]它可由五氯化钽二甲基锌的反应制得。[5]它可以和甲基锂反应,生成[Ta(CH3)6]或[Ta(CH3)7]2−[6]它和一氧化氮反应,得到二聚体{TaMe3[ON(CH3)NO]2}2[7]

五甲基钽
系统名
pentamethyl-λ5-tantalane
识别
CAS号 53378-72-6  checkY
PubChem 143042
SMILES
 
  • C[Ta](C)(C)(C)C
性质
化学式 C5H15Ta
摩尔质量 256.12 g·mol−1
外观 黄色油状液体,−20 °C时为绿色固体
熔点 0 °C(273 K)[1]
沸点 25 °C以上分解,放出甲烷
溶解性 ether, pentane, 2-methylbutane
热力学
ΔfHm298K 169.8[2],213 kJ/mol[3]
相关物质
相关化学品 五甲基砷
五甲基锑
五甲基铋
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

参考文献

编辑
  1. ^ Yaws, Carl L. The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals: Physical Properties for More Than 54,000 Organic and Inorganic Chemical Compounds, Coverage for C1 to C100 Organics and Ac to Zr Inorganics. Gulf Professional Publishing. 2015: 87 [2020-12-09]. ISBN 9780128011461. (原始内容存档于2016-08-07) (英语). 
  2. ^ Adedeji, Festus A.; Connor, Joseph A.; Skinner, Henry A.; Galyer, Lee; Wilkinson, Geoffrey. Heat of formation of pentamethylantalum and hexamethyltungsten. Journal of the Chemical Society, Chemical Communications. 1976, (5): 159. doi:10.1039/C39760000159. 
  3. ^ Pentamethyl tantalum. webbook.nist.gov. [2020-12-09]. (原始内容存档于2020-12-09) (英语). 
  4. ^ Urben, Peter. Bretherick's Handbook of Reactive Chemical Hazards. Academic Press. 2013: 744. ISBN 9780080523408 (英语). 
  5. ^ Herrmann, W. A. Synthetic Methods of Organometallic and Inorganic Chemistry, Volume 7, 1997: Volume 7: Transition Metals. Georg Thieme Verlag. 2014: 160–161. ISBN 9783131794710 (德语). 
  6. ^ Schrock, R. R.; Meakin, P. Pentamethyl complexes of niobium and tantalum. Journal of the American Chemical Society. August 1974, 96 (16): 5288–5290. doi:10.1021/ja00823a064. 
  7. ^ Middleton, A. Robert; Wilkinson, Geoffrey. Interaction of nitric oxide with paramagnetic and diamagnetic alkyls of titanium, zirconium, vanadium, niobium, and tantalum. Journal of the Chemical Society, Dalton Transactions. 1980, (10): 1888. doi:10.1039/DT9800001888.