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甲酸银

甲酸银

识别
CAS号 13126-70-0  checkY
SMILES
 
  • [Ag+].[O-]C=O
性质
化学式 HCOOAg
摩尔质量 152.887 g·mol⁻¹
外观 浅褐色固体,
光照下颜色变深[1]
熔点 分解
相关物质
其他阴离子 乙酸银
苯甲酸银
其他阳离子 甲酸铜
相关化学品 甲酸
氧化银
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

甲酸银是一种无机化合物化学式为HCOOAg,不稳定。

制备

甲酸银可由甲酸碳酸银,或甲酸盐和可溶性银盐反应,在-15~0℃反应,沉淀得到。在室温,Ag+便可和HCOO-发生氧化还原反应而析出银。[1]

2 HCOOH + Ag2CO3 → 2 HCOOAg + H2O + CO2

另外,A.G. Brook在文献[2]中提到,硝酸银甲酸钠在暗处反应,可以得到甲酸银,其固体可被干燥。

用途

甲酸银可以用于制备甲酸酯,如在0℃的己烷中和叔丁基氯反应:[1]

(CH3)3CCl + HCOOAg→ (CH3)3COOCH + AgCl

三苯基氯硅烷反应,可以得到三苯基甲硅烷甲酸酯。[2]

配合物

甲酸银的配合物(PPh3)2AgO2CH已被制得,热稳定性较甲酸银高,但达到一定温度后仍会析出[3]

注释

在文献[4]中,甲酸银被标记为可溶于水。

参考文献

  1. ^ 1.0 1.1 1.2 George A Cowan, Fugassi James Paul. Method of making silver formate[P]. US 2630444 A. 1953.3
  2. ^ 2.0 2.1 A. G. Brook. Thermal Rearrangements of Organosilicon and Organogermanium Compounds[J]. J. Am. Chem. Soc., 1955. 77 (18): 4827-4829. DOI: 10.1021/ja01623a042.
  3. ^ Graham A. Bowmaker, John V. Hanna, Peter C. Healy, et al. Crystal Structure, Infrared and Solid State CP MAS NMR Characterization of [(PPh3)2AgO2CH] and of [(PPh3)2AgO2CH]·2HCO2H, a Complex of the H-Bonded [H2(HCO2)3]- Species. J. Phys. Chem., 1995, 99 (12): 3909–3917. DOI: 10.1021/j100012a008.
  4. ^ W. M. Haynes. CRC Handbook of Chemistry and Physics 95thed. CRC Press, 2014. pp 5-211. Solubility Chart
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甲酸银
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