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乙炔银

乙炔银
IUPAC名
Disilver acetylide
系统名
Disilver(1+) ethyndiide
识别
CAS号 7659-31-6  checkY
SMILES
 
  • [Ag+].[Ag+].[C-]#[C-]
InChI
 
  • 1S/C2.2Ag/c1-2;;/q-2;2*+1
InChIKey FIDGMLJJLFFOEI-UHFFFAOYSA-N
性质
化学式 C2Ag2
摩尔质量 239.76 g·mol−1
外观 白色固体[1]
熔点 120 °C 分解[2]
溶解性 不溶
危险性
主要危害 高度易爆,有毒
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

乙炔银是一种无机化合物,化学式为Ag2C2,是一种金属乙炔化合物。该化合物可被视为弱乙炔)的。盐的阴离子是两个由三键相连的原子。

合成

这和Marcellin Berthelot于1866年发现乙炔银时制备的方法一样。[4]此法会生成Ag2C2·xAgNO3复盐[5]

乙炔银可以形成在银或高银合金的表面上,例如乙炔管道的银焊点。

性质

乙炔银不溶于水,且在其它任何溶剂中都不显著可溶。

乙炔银有一项很特殊的性质:在爆炸时不产生气体。化合物的阳离子在分解反应中作为氧化剂。[6]

爆速为4000 m/s。

乙炔银与硝酸银复盐的爆轰速度为3460 m/s。[7]

干燥的乙炔银非常危险。可以用浓盐酸硫化铵销毁:

参考文献

  1. ^ 乙炔银沉淀生成实验的改进
  2. ^ Holleman/Wiberg: Lehrbuch der Anorganischen Chemie. 102. Auflage, de Gruyter, Berlin 2007.
  3. ^ G.-C. Guo, Q.-G. Wang, G.-D. Zhou, T. C. W. Mak. Synthesis and characterization of Ag2C2·2AgClO4·2H2O: a novel layer-type structure with the acetylide dianion functioning in a 6112222 bonding mode inside an octahedral silver cage. Chem. Commun. 1998, (3): 339–340. doi:10.1039/a708439k. 
  4. ^ M. P. Berthelot. Ueber eine neue Klasse zusammengesetzter metallhaltiger Radicale (A new class of combined metallic radicals). 利比希化学纪事. 1866, 138 (2): 245–253. doi:10.1002/jlac.18661380215. 
  5. ^ 六硝酸银合乙炔银的晶体结构. [2013-01-27]. (原始内容存档于2016-03-04). 
  6. ^ Decomposition of silver acetylide. [2013-01-27]. (原始内容存档于2014-12-23). 
  7. ^ 合成炔基炸药. [2013-01-25]. (原始内容存档于2013-03-01). 
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乙炔银
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