bis(pentamethylcyclopentadienyl)(2,3,4,5-tetramethylphospholyl)samarium | 363151-77-3

• 英文名称: bis(pentamethylcyclopentadienyl)(2,3,4,5-tetramethylphospholyl)samarium
• CAS: 363151-77-3
• 化学式: C₂₈H₄₂PSm
• 分子量: 559.975
• InChiKey: BYGLJADHQWABTG-UHFFFAOYSA-N

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：

  [Sm(Cp*)₂(OEt₂)] 、 2,3,4,5,2',3',4',5',-octamethylbi-1,1'-phospholyl 以 甲苯 为溶剂， 以34%的产率得到bis(pentamethylcyclopentadienyl)(2,3,4,5-tetramethylphospholyl)samarium
  参考文献：
  名称：

  Synthesis and Molecular Structure of Bis(pentamethylcyclopentadienyl) Phospholyl- and Arsolylsamarium(III) Complexes: Influence of Steric and Electronic Factors

  摘要：

  The title complexes could be easily synthesized respectively from the following biphospholyls: 2,3,4,5,2 ' ,3 ' ,4 ' ,5 ' -octamethylbi-1,1 ' -phospholyl (1); 3,4,3 ' ,4 ' -tetramethylbi-1,1 ' -phospholyl (2); 2,5,2 ' ,5 ' -tetra-tert-butylbi-1,1 ' -phospholyl (3), and CP*Sm-2 or Cp*Sm-2(Et2O) (Cp* = pentamethylcyclopentadienyl). 3,4,3 ' ,4 ' -Tetramethylbi-1,1 ' -arsolyl (4), a precursor of the new 3,4-dimethylarsolyl ligand, was prepared in three steps from the known 1-chloro-2,5-di(trimethylsilyl)-3,4-dimethylarsole (5). The reaction of 4 with CP*Sm-2 afforded the title complex 12. Although the unsubstituted bi-1,1 ' -phospholyl could be observed by NMR, it decomposed during the isolation, and thus the title complex 13 with the unsubstituted phospholyl was prepared from Cp*Sm-2(Et2O) and the new thallium phospholide 8, synthesized by metathesis of lithium phospholide with thallous ethoxide. Compounds 8-13 were characterized by X-ray crystallography. The solid state structures of complexes 9-13 vary depending on the substitution pattern on the phospholyl ligand. They can be eta (1)- or eta (5)-coordinated monomers (respectively 9 and 12), a mu:eta (1):eta (5)- symmetrical dimer (13), or even unsymmetrical dimers where both the eta (1)- and the mu:eta (1),eta (5)-coordination modes are found (10 and 11). These structures are discussed by taking into account the electronic and steric properties of the phospholyl and arsolyl ligands.

  DOI：

  10.1021/om010317n