{W(CO)2(dmpe)(η5-C2B9H8(Et)Me2)} | 140939-66-8

• 英文名称: {W(CO)2(dmpe)(η5-C2B9H8(Et)Me2)}
• CAS: 140939-66-8
• 化学式: C₁₄H₃₅B₉O₂P₂W
• 分子量: 578.527
• InChiKey: BCYCUQIXUWFYHZ-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：

  四氟硼酸-二乙醚络合物 、 NEt4{W(CMe)(CO)2(η5-C2B9H9Me2) 、 1,2-双(二甲基瞵)乙烷 以 二氯甲烷 为溶剂， 以65%的产率得到{W(CO)2(dmpe)(η5-C2B9H8(Et)Me2)}
  参考文献：
  名称：

  Alkylidyne(carbaborane) complexes of the Group 6 metals. Part 2. Alkylidene group capture on protonation in the presence of chelating phosphines

  摘要：

  In CH2Cl2 solutions at ca. -78-degrees-C the salts [PPh4][W(= CC6H4Me-4)(CO)2(eta(5)-C2B9H9R'2)](R' = Me or H) upon treatment with HBF4.Et2O, in the presence of dppm (PPh2PCH2PPh2) or dope (Ph2PCH2CH2PPh2), afford the complexes [activated W{CH(C6H4Me-4)PPh2(CH2)nPPh2}(CO)2(eta(5)-C2B9H9R'2)] (n = 1 or 2, R' = Me; n = 2, R' = H). The compound [activated W{CH(Me)PPh2CH2CH2PPh2}(CO)2(eta(5)-C2B9H11)] was similarly prepared from [NEt4][W(= CMe)(CO)2(eta(5)-C2B9H11)], dppe and HBF4.Et2O. In contrast, treatment of [Net4][W(= CMe)(CO)2(eta(5)-C2B9H9Me2)] in CH2Cl2 at -78-degrees-C with HBF4.Et2O and dppe or dmpe (Me2PCH2CH2PMe2) gives the complexes [W(CO)2L2{eta(5)-C2B9H8(Et)Me2)] (L2 = dppe or dmpe). The molecular structure of [activated W{CH(C6H4Me-4)PPh2CH2PPh2}(CO)2(eta(5)-C2B9H9Me2)] has been established by a single-crystal X-ray diffraction study. Within the five-membered WCPCP ring the bond distances are W-C 2.342(9), C-P 1.802(9), P-C 1.81(1) and P-W 2.482(3) angstrom. The ligated carbon and phosphorus atoms of the ring, and the two essentially linearly bound CO ligands, form a pyramidal arrangement with the tungsten atom, the other side of which is co-ordinated by the nido-icosahedral C2B9H9Me2 cage in the usual eta(5) manner. The NMR spectra (H-1, C-13-{H-1}, P-31-{H-1} and B-11-{H-1}) of the new compounds are reported and discussed in relation to their structures.

  DOI：

  10.1039/dt9920000401