(pentamethylcyclopentadienyl)(η(3)-2-methylpropenyl)dibromoosmium(IV) | 243468-18-0

• 英文名称: (pentamethylcyclopentadienyl)(η(3)-2-methylpropenyl)dibromoosmium(IV)
• 英文别名: (C5Me5)Os(η3-CH2CMeCH2)Br2
• CAS: 243468-18-0；160211-12-1
• 化学式: C₁₄H₂₂Br₂Os
• 分子量: 540.337
• InChiKey: ZFEKZBVSLZFBRR-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  (pentamethylcyclopentadienyl)(η(3)-2-methylpropenyl)dibromoosmium(IV) 、 二甲基镁 以 乙醚 为溶剂， 以32%的产率得到(pentamethylcyclopentadienyl)(η(3)-2-methylpropenyl)(methyl)dibromoosmium(IV)
  参考文献：
  名称：

  Synthesis of Hydride and Alkyl Compounds Containing the Cp*Os(η³-allyl) Fragment. Crystal Structures of Cp*Os(η³-C₈H₁₃)Br₂ and [Cp*Os(η³-C₄H₇)Me(H₂O)][BF₄]

  摘要：

  Treatment of Gp*(2)Os(2)B(r)4 with 3-bromo-2-methylpropene or 1,3-cycloactadiene affords the 2-methylpropenyl and cyclooctenyl products Cp*Os(eta(3)-C4H7)Br-2 and Cp*Os(eta(3)-C8H13)Br-2, respectively. The monoalkyl complexes Cp*Os(eta(3)-C4H7)MeBr and Cp*Os(eta(3)-C4H7)(CH2SiMe3)-Br can be generated by treating Cp*Os(eta(3)-C4H7)Br-2 with MgMe2 or LiCE2SiMe3. The dimethyl complex Cp*Os(eta(3)-C4H7)Me-2 can be synthesized from CP*Os(eta(3)-C(4)H7())Br(2) by addition of methyllithium. In contrast, addition of ethyllithium to Cp*Os(eta(3)-C4H7)Br-2 yields the ethylene complex Cp*Os(eta(3)-C4H7)(eta(2)-C2H4) and a small amount of Cp*Os(eta(3)-C4H7)H-2. The latter dihydride can be synthesized in better yield by treating CP*Os(eta(3)-C4H7)Br-2 With LiAlH4. When the dimethyl complex Cp*Os(eta(3)-C4H7)Me-2 is protonated with HBF4 in the presence of H2O, the aqua complex [Cp*Os(eta(3)-C4H7)Me(H2O)][BF4] is formed.

  DOI：

  10.1021/om990150m
• 作为产物：
  描述：

  3-溴-2-甲基丙烯 、 dibromo(pentamethylcyclopentadienyl)osmium(III) dimer 以 乙醇 、 二氯甲烷 为溶剂， 以56%的产率得到(pentamethylcyclopentadienyl)(η(3)-2-methylpropenyl)dibromoosmium(IV)
  参考文献：
  名称：

  Synthesis of Hydride and Alkyl Compounds Containing the Cp*Os(η³-allyl) Fragment. Crystal Structures of Cp*Os(η³-C₈H₁₃)Br₂ and [Cp*Os(η³-C₄H₇)Me(H₂O)][BF₄]

  摘要：

  Treatment of Gp*(2)Os(2)B(r)4 with 3-bromo-2-methylpropene or 1,3-cycloactadiene affords the 2-methylpropenyl and cyclooctenyl products Cp*Os(eta(3)-C4H7)Br-2 and Cp*Os(eta(3)-C8H13)Br-2, respectively. The monoalkyl complexes Cp*Os(eta(3)-C4H7)MeBr and Cp*Os(eta(3)-C4H7)(CH2SiMe3)-Br can be generated by treating Cp*Os(eta(3)-C4H7)Br-2 with MgMe2 or LiCE2SiMe3. The dimethyl complex Cp*Os(eta(3)-C4H7)Me-2 can be synthesized from CP*Os(eta(3)-C(4)H7())Br(2) by addition of methyllithium. In contrast, addition of ethyllithium to Cp*Os(eta(3)-C4H7)Br-2 yields the ethylene complex Cp*Os(eta(3)-C4H7)(eta(2)-C2H4) and a small amount of Cp*Os(eta(3)-C4H7)H-2. The latter dihydride can be synthesized in better yield by treating CP*Os(eta(3)-C4H7)Br-2 With LiAlH4. When the dimethyl complex Cp*Os(eta(3)-C4H7)Me-2 is protonated with HBF4 in the presence of H2O, the aqua complex [Cp*Os(eta(3)-C4H7)Me(H2O)][BF4] is formed.

  DOI：

  10.1021/om990150m

文献信息

• Synthesis and Reactivity of the Osmium(III) Pentamethylcyclopentadienyl Complex (C₅Me₅)₂Os₂Br₄. X-ray Crystal Structures of (C₅Me₅)₂Os₂Br₄, (C₅Me₅)₂Os₂(μ-O)Br₄, and (C₅Me₅)₂Os₂(μ-NPh)₂Br₂
  作者：Christopher L. Gross、Julia L. Brumaghim、Gregory S. Girolami

  DOI：10.1021/om060983u

  日期：2007.4.1

  singlet−triplet splitting of >800 cm-1. The reactions of (C5Me5)2Os2Br4 with oxygen, bromine, lithium anilide, acetonitrile, and norbornadiene (NBD) are described, affording the compounds (C5Me5)2Os2(μ-O)Br4, (C5Me5)OsBr4, (C5Me5)2Os2(μ-NPh)2Br2, [(C5Me5)Os(MeCN)3][BPh4], and (C5Me5)Os(NBD)Br; the crystal structures of the bridging oxo and bridging imido complexes are given.

  在叔丁醇中用C 5 Me 5 H处理H 2 OsBr 6得到双核（C 5 Me 5）2 Os 2 Br 4，一种单（五甲基环戊二烯基）配合物，是各种synthetic的“半三明治”配合物的关键合成入口。X射线晶体结构显示它包含两个桥接和两个末端溴化物配体，桥接溴化物配体的Os-Br键距离短于末端溴化物配体。2.970（1）Å的Os-Os距离表示单个-os键。该化合物在溶液和固态中呈弱顺磁性，在4-300 K范围内测定的磁化率给出了> 800 cm -1的单重态-三重态分裂。（C 5 Me 5）2 Os 2 Br 4的反应描述了用氧，溴，苯胺酸锂，乙腈和降冰片二烯（NBD）制备化合物（C 5 Me 5）2 Os 2（μ-O）Br 4，（C 5 Me 5）OsBr 4，（C 5 Me 5）2 Os 2（μ-NPh）2 Br 2，[（C 5 Me 5）Os（MeCN）3 ] [BPh 4 ]和（C