WCl4(diphenylacetylene)2 | 165070-60-0

• 英文名称: WCl4(diphenylacetylene)2
• CAS: 165070-60-0
• 化学式: C₂₈H₂₀Cl₄W
• 分子量: 682.129
• InChiKey: VRXCDBMGOFMMGC-UHFFFAOYSA-J

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：
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• 拓扑面积：
  None
• 氢给体数：
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• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  WCl4(diphenylacetylene)2 在 Na-amalgam 、 DPPE 作用下， 以 四氢呋喃 为溶剂， 以88%的产率得到mer-[WCl3(diphenylacetylene)(1,2-bis(diphenylphosphino)ethane)]
  参考文献：
  名称：

  2,6-Diisopropylphenylimido and diphenylacetylene complexes of tungsten containing the bidentate ligands 4,4′-dimethyl-2,2′-bipyridine and 1,2-bis(diphenylphosphino)ethane

  摘要：

  Sodium-mercury amalgam reduction of {WCl4(NC6H3Pr2i-2,6)}(2) in the presence of 4,4'-dimethyl-2,2'-bipyridine (dmbipy) or 1,2-bis(diphenylphosphino)ethane (dppe) gave the d(1) complexes WCl3(NC6H3Pr2i-2,6)(dmbipy) 1 and WCl3(NC6H3Pr2i-2,6)(dppe) 2. A crystal-structure determination of complex 2 shows the three chloro ligands in a mer arrangement and the dppe ligand phosphorus atoms lying trans to one chloro ligand and also the imido ligand. The W-P bond trans to the chloro ligand is normal 2.550(2) A whereas the W-P bond trans to the imido ligand is very long 2.765(2) A . One phenyl group of dppe rotates to accommodate an isopropyl group of the imido ligand. Sodium-mercury amalgam reduction of {WCl4(PhC(2)Ph)}(2) in the presence of dmbipy gave WCl3(PhC(2)Ph)(dmbipy) which the W-Cl stretches suggest is the mer trichloride. However, an IR spectrum of the product of standing {WCl4(PhC(2)Ph)}(2) and dmbipy in tetrahydrofuran indicates the fac isomer. A reduction of {WCl4(PhC(2)Ph)}(2) in the presence of dppe gave WCl3(PhC(2)Ph)(dppe) for which the mer isomer is preferred. The dppe complexes do not give characterisable complexes on further reduction in the presence of diphenylacetylene, ethylene or CO. Sodium-mercury amalgam reduction of 1 in the presence of diphenylacetylene gave WCl2(NC6H3Pr2i-2,6)(PhC(2)Ph)(dmbipy) which IR and NMR spectra indicate has an asymmetric structure where the alkyne ligand is a two-electron donor. Reductions of complex 1 under ethylene or CO gave WCl2(NC6H3Pr2i-2,6)(CH2CH2)(dmbipy) and WCl2(NC6H3Pr2i-2,6)(CO)(dmbipy) both of which consist of several isomers.

  DOI：

  10.1039/dt9950001147