bis(μ-iodo)bis(2-ethyl-3,5-dimethyl-1-phenylpyrazolin-4-ylidene)diiododipalladium(II) | 1268507-15-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: bis(μ-iodo)bis(2-ethyl-3,5-dimethyl-1-phenylpyrazolin-4-ylidene)diiododipalladium(II)
• CAS: 1268507-15-8
• 化学式: C₂₆H₃₂I₄N₄Pd₂
• 分子量: 1121.02
• InChiKey: KMGFKGARMAMTPM-UHFFFAOYSA-J

计算性质

• 辛醇/水分配系数(LogP)：
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• 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：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  tris(dibenzylideneacetone)dipalladium (0) 、 2-ethyl-4-iodo-3,5-dimethyl-1-phenylpyrazolium iodide 以 二氯甲烷 为溶剂， 以86%的产率得到bis(μ-iodo)bis(2-ethyl-3,5-dimethyl-1-phenylpyrazolin-4-ylidene)diiododipalladium(II)
  参考文献：
  名称：

  Reactivity Differences of Palladium(II) Dimers Bearing Heterocyclic Carbenes with Two, One, or No α-Nitrogen Atoms toward Isocyanides

  摘要：

  Pd(II) dimers [PdI2(rNHC)](2) (1a,b) of pyrazole-based remote N-heterocyclic carbenes (rNHCs) have been synthesized through oxidative addition of 4-iodopyrazolium iodides (A, B) to [Pd-2(dba)(3)]. Reaction of I a with aromatic (CN-Xyl) or aliphatic (CN-Cy) isocyanides led to the template-assisted formation of novel Pd(II) dimers 8 and 9 bearing betainic C-imino ligands via isocyanide insertion into Pd-C-rNHC bonds and subsequent dimerization. In contrast, both isocyanides reacted with the dimers [PdI2(Me-2-indy)](2) (2) and [PdI2(Me-2-bimy)](2) (3) bearing indazolin-3-ylidenes and benzimidazolin-2-ylidenes with formation of mononuclear mixed carbene/isocyanide complexes 4-7. Notably, only dimer 8 underwent further bridge cleavage with excess isocyanide, yielding the mixed C-imino/CN-Xyl complex 10, while dimer 9 remained intact. These results highlight the uniquely different reactivities of complexes with carbenes having no a-nitrogen versus those with one or two a-nitrogen atoms, as a result of their decreasing donor abilities.

  DOI：

  10.1021/om101169x