bis(3,5-dimethylpyrazol-1-yl)acetato(dicarbonyl)(phenylpropynylidyne)tungsten | 410524-03-7

• 英文名称: bis(3,5-dimethylpyrazol-1-yl)acetato(dicarbonyl)(phenylpropynylidyne)tungsten
• CAS: 410524-03-7
• 化学式: C₂₃H₂₀N₄O₄W
• 分子量: 600.286
• InChiKey: VQWPVHOZCCITEP-UHFFFAOYSA-M

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：

  六羰基钨 、 potassium bis(3,5-dimethylpyrazol-1-yl)acetate 、 苯乙炔 在 C₄H₉Li 、 (CF₃CO)2O 作用下， 以 乙醚 、 正己烷 为溶剂， 以91%的产率得到bis(3,5-dimethylpyrazol-1-yl)acetato(dicarbonyl)(phenylpropynylidyne)tungsten
  参考文献：
  名称：

  Alkynylcarbyne complexes containing various tri- and bidentate ligands such as cyclopentadienide, tris(pyrazolyl)borate, bis(pyrazolyl)acetate and tmeda: synthesis and spectroscopic properties

  摘要：

  The (alkynylcarbyne) tungsten complexes [L-3(CO)(2)WdropC-CdropC-R] (3a,b-6a,b) [L-3 = hydro[tris(3,5-dimethylpyrazol-1-yl)]borato (Tp', 3), hydro[tris(pyrazol-1-yl)]borato (Tp, 4), cyclopentadienyl (Cp, 5), bis(3,5-dimethylpyrazol-1-yl)acetato (bdmpza, 6); R = SiMe3 (a), Ph (b)] were prepared in a stepwise fashion from [W(CO)(6)] and Li[CdropCR], (CF3CO)(2)O and M[L-3] (M = Na, K). The formation of 6a,b was highly selective, only complexes with a trans arrangement of the carboxylate group of bdmpza and the alkynylcarbyne ligand were detected. The reaction of [W(CO)(6)] with Li[CdropCR], C2O2Cl2 and tmeda afforded trans[Cl(CO)(2)(tmeda)WdropC-CdropC-R] (7a,b). The electron-donating potential of the different tripodal ligands L-3 was studied by IR- and C-13-NMR spectroscopy and compared to that of the ligand combination Cl/tmeda. The IR data suggest that in these complexes bdmpza is a weaker electron donor than Tp' and Tp but displays stronger electron-donating abilities than Cp. The structures of 6b and 7b were established by X-ray structural analyses. (C) 2002 Elsevier Science B.V. All rights reserved.

  DOI：

  10.1016/s0022-328x(01)01310-9