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20816-12-0 分子结构
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osmium(8+) ion tetraoxidandiide

ChemBase编号:295056
分子式:O4Os
平均质量:254.2276
单一同位素质量:255.94113848
SMILES和InChIs

SMILES:
[O-2].[O-2].[O-2].[O-2].[Os+8]
Canonical SMILES:
[O-2].[O-2].[O-2].[O-2].[Os+8]
InChI:
InChI=1S/4O.Os/q4*-2;+8
InChIKey:
ZEWCIYALLCXNSS-UHFFFAOYSA-N

引用这个纪录

CBID:295056 http://www.chembase.cn/molecule-295056.html

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名称和登记号

名称和登记号

名称 登记号
IUPAC标准名
osmium(8+) ion tetraoxidandiide
IUPAC传统名
osmium(8+) ion tetraoxidandiide
别名
氧化锇(VIII)
Osmic acid
Osmium tetroxide
Osmium(VIII) oxide
CAS号
20816-12-0
EC号
244-058-7
MDL号
MFCD00011150
默克索引号
146893
PubChem SID
180680587
PubChem CID
9837936

数据来源

数据来源

所有数据来源 商品来源 非商品来源
数据来源 数据ID
Alfa Aesar 12103 external link 加入购物车
PubChem 9837936 external link
数据来源 数据ID 价格
Alfa Aesar
12103 external link 加入购物车 请登录
数据来源 数据ID
PubChem 9837936 external link

理论计算性质

理论计算性质

JChem
Acid pKa 15.7  质子受体
质子供体 LogD (pH = 5.5) -0.652 
LogD (pH = 7.4) -0.652  Log P -0.652 
摩尔折射率 13.1149 cm3 极化性 1.8190874 Å3
极化表面积 0.0 Å2 可自由旋转的化学键
里宾斯基五规则 true 

分子性质

分子性质

理化性质 安全信息 产品相关信息 生物活性(PubChem)
溶解度
Soluble in chloroform, alcohol and ethers expand 查看数据来源
外观
Crystalline expand 查看数据来源
熔点
40.6°C expand 查看数据来源
沸点
130°C expand 查看数据来源
欧盟危险性物质标志
剧毒(Highly toxic) 剧毒(Highly toxic) (T+) expand 查看数据来源
联合国危险货物编号
UN2471 expand 查看数据来源
联合国危险货物等级
6.1 expand 查看数据来源
联合国危险货物包装类别(PG)
I expand 查看数据来源
危险公开号
26/27/28-34 expand 查看数据来源
安全公开号
7/9-26-45 expand 查看数据来源
TSCA收录
expand 查看数据来源
GHS危险品标识
GHS05 expand 查看数据来源
GHS06 expand 查看数据来源
GHS危险声明
H300-H310-H330-H314 expand 查看数据来源
GHS警示性声明
P260-P301+P310-P303+P361+P353-P304+P340-P305+P351+P338-P320-P330-P361-P405-P501A expand 查看数据来源
纯度
99.8% (metals basis), Os 74.4% min expand 查看数据来源

详细说明

详细说明

参考文献

参考文献

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  • See also Potassium osmium(VI) oxide dihydrate, L18120.
  • Reagent for the cis-dihydroxylation of double bonds via cyclic osmate esters. Reviews: Synthesis, 229 (1974); Chem. Rev., 80, 187 (1980). Because of the cost and toxicity of the osmium compounds, various co-oxidants have been used to regenerate the reagent, including:
  • H2O2: J. Am. Chem. Soc., 58, 1302 (1936); 59, 2345 (1937); NaIO4: J. Org. Chem., 21, 478 (1956); tert-BuOOH in the presence of Bu4NOH or Bu4NOAc: J. Am. Chem. Soc., 98, 1986 (1976); J. Org. Chem., 43, 2063 (1978); Trimethylamine N-oxide in pyridine, permitting the dihydroxylation of hindered double bonds: Tetrahedron Lett., 21, 449 (1980); N-Methylmorpholine-N-oxide (NMMO): Tetrahedron Lett., 1973 (1976); for examples using this system, with <1% catalyst, see: Org. Synth. Coll., 6, 342 (1988). Possible overoxidation of the diol can be avoided by trapping with Benzeneboronic acid, A14257: Chem. Lett., 1721 (1988). Recyclable systems for Os, utilizing the ionic liquids 1-Ethyl-3-methylimidazolium tetrafluoroborate, L19763: Tetrahedron Lett., 43, 6849 (2002), or 1-n-Butyl-3-methylimidazolium hexafluorophosphate, L19086, and DMAP: Org. Lett., 4, 2197 (2002), have been reported to give excellent results. In conjunction with NaIO4, oxidative cleavage of alkenes can be effected. For an improved procedure, see: Org. Lett., 6, 3217 (2004).
  • Sharpless and others have developed techniques for catalytic asymmetric dihydroxylation (ADH), in the presence of chiral amines such as dihydroquinidine, with NMMO as stoichiometric oxidant: J. Am. Chem. Soc., 102, 4263 (1980); 110, 1968 (1988); for practical details (stilbene to (R,R)-stilbenediol), see: Org. Synth. Coll., 9, 383 (1998). For a review of catalytic ADH, see: Chem. Rev., 94, 2483 (1994).
  • Can also be used, in combination with Chloramine-T trihydrate, A12044, for vicinal oxyamination of olefins: Org. Synth. Coll., 7, 375 (1990).
  • Using KClO4 to regenerate the reagent, alkynes have been oxidized to ɑ-diketones: J. Org. Chem., 43, 4245 (1978). Terminal alkynes can be converted to ɑ-keto esters by hydroxylation of their 1-silyl derivatives: Tetrahedron, 46, 2573 (1990).
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专利

专利

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