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二茂铬

二茂铬
Chromocene
Chromocene
IUPAC名
chromocene, bis(η5-cyclopentadienyl)chromium
别名 铬茂
识别
CAS号 1271-24-5  ☒N
PubChem 79154
ChemSpider 71485
SMILES
 
  • [Cr+2].[c-]1cccc1.c1[c-]ccc1
InChI
 
  • 1/2C5H5.Cr/c2*1-2-4-5-3-1;/h2*1-5H;/q2*-1;+2
InChIKey TYYBBNOTQFVVKN-UHFFFAOYAS
ChEBI 30677
RTECS GB7600000
性质
化学式 (C5H5)2Cr
摩尔质量 182.18 g·mol⁻¹
外观 暗红色晶体
密度 1.43 g/cm3,固体
熔点 168-170 °C
溶解性 遇水分解
结构
配位几何 伪八面体
偶极矩 0 D
危险性
警示术语 R:20/21/22-36/37/38
安全术语 S:26-37/39
主要危害 自燃
相关物质
相关化学品 Fe(C5H5)2
Ni(C5H5)2
乙酸亚铬
二苯铬
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

二茂铬是一种有机金属化合物化学式(C5H5)2Cr。遇空气迅速氧化,有时会自燃。溶于液氨四氢呋喃等。可由二氯化铬环戊二烯基钠四氢呋喃中反应制得:

CrCl2 + 2 NaC5H5 → Cr(C5H5)2 + 2 NaCl

二茂铬可以用作乙烯聚合高效催化剂、氢化催化剂和硫化促进剂等。

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二茂铬
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