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乙酸钯

乙酸钯(II)
IUPAC名
Palladium(II) acetate
乙酸钯(II)
识别
CAS号 3375-31-3  checkY
PubChem 167845
ChemSpider 146827
SMILES
 
  • [Pd+2].[O-]C(=O)C.[O-]C(=O)C
InChI
 
  • 1/2C2H4O2.Pd/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2
InChIKey YJVFFLUZDVXJQI-NUQVWONBAH
RTECS AJ1900000
性质
化学式 C4H6O4Pd
摩尔质量 224.50 g·mol⁻¹
外观 棕黄色固体
密度 2.19 g/cm³
熔点 205 °C (478 K),分解
沸点 分解
溶解性
结构
晶体结构 单斜
配位几何 平面正方形
偶极矩 0 D
危险性
警示术语 R:R41
安全术语 S:S24/25
MSDS MSDS
主要危害 认为无害
相关物质
其他阴离子 氯化钯
其他阳离子 乙酸铂
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

乙酸钯,也称为醋酸钯,是一个含化合物,化学式为Pd(O2CCH3)2或Pd(OAc)2。乙酸钯被认为比乙酸铂英语Platinum(II) acetate活性更高,能够溶于很多有机溶剂

结构

乙酸钯是三聚体,三个Pd呈等边三角形分布,每一个钯都以蝴蝶型连接两个乙酸基团。每一个金属原子都近似是平面正方形的结构。[1]

制备

乙酸钯能够从海绵钯、热的乙酸硝酸通过两步合成。中间体是一个二硝酸化合物:[2][3]

Pd + 2 HNO3 → Pd(NO3)2 + H2
Pd(NO3)2 + 2 CH3COOH → Pd(O2CCH3)2 + 2 HNO3

过量的海绵钯保证了HNO3完全消耗。

其它含钯化合物前体

乙酸钯也被用来制备其他的含钯化合物。例如乙酸苯基钯,用来将烯丙基醇转化为,其制备方法如下:

Hg(C6H5)(CH3COO) + Pd(CH3COO)2 → Pd(C6H5)(O2CCH3) + Hg(O2CCH3)2[4]

乙酸钯和乙酰丙酮反应,生成Pd(acac)2,Pd(0)的前体。

光或热能够还原乙酸钯,得到薄层钯。可通过此法制备纳米线或者胶体。[2]

参考资料

  1. ^ Skapski, A C.; M. L. Smart. The Crystal Structure of Trimeric Palladium(II) Acetate. J. Chem. Soc. D. 1970: 658b–659. doi:10.1039/C2970000658b. 
  2. ^ 2.0 2.1 Bakhmutov, V. I.,; Berry, J. F.; Cotton, F. A.; Ibragimov, S.; Murillo, C. A. Non-Trivial Behavior of Palladium(II) Acetate. Dalton Transactions. 2005: 1989–1992. doi:10.1039/b502122g. 
  3. ^ "High Purity Homogeneous Catalyst." Engelhard. Sept. 2005. Engelhard Corp. 24 Feb. 2006.<http://www.engelhard.com/documents/High%20Purity%20Homo%20Cat%20_Pd-acetate_%20A4%20Revised%20Final.pdf页面存档备份,存于互联网档案馆)>.
  4. ^ Richard F. Heck. "Aldehydes from Allylic Alcohols and Phenylpalladium Acetate: 2-Methyl-3-Phenylpropionaldehyde". Org. Synth.; Coll. Vol. 6: 815. 
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乙酸钯
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