((i)PrO)2Ta[OSi(O(t)Bu)3]3 | 845781-56-8

• 分子结构分类: 有机化合物 - 有机盐 - 有机金属盐
• 英文名称: ((i)PrO)2Ta[OSi(O(t)Bu)3]3
• 英文别名: Ta(OiPr)2[OSi(OtBu)3]3
• CAS: 845781-56-8
• 化学式: C₄₂H₉₅O₁₄Si₃Ta
• 分子量: 1089.41
• InChiKey: VRZNCCCWBIYWFQ-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：

  三(叔丁氧基)硅烷醇 、 五异丙氧基钽 以 正戊烷 为溶剂， 以93%的产率得到((i)PrO)2Ta[OSi(O(t)Bu)3]3
  参考文献：
  名称：

  Thermolytic conversion of a bis(alkoxy)tris(siloxy)tantalum(V) single-source molecular precursor to catalytic tantala–silica materials

  摘要：

  The new complex ((PrO)-Pr-i)(2)Ta[OSi((OBu)-Bu-t)(3)](3) (1) was prepared via silanolysis of Ta((OPr)-Pr-i)(5) with ((BuO)-Bu-t)(3)SiOH and is a useful structural and spectroscopic (NMR, FTIR) model of Ta(V) on silica. The complex was also used to prepare tantalum-containing silica materials, via the thermolytic Molecular precursor method (yielding Ta2O5 . 6SiO(2) and Ta2O5 . 18SiO(2)) or by grafting 1 onto mesoporous SBA-15 silica (yielding a surface-supported tantala species, TaSBA-15). The Solution phase thermolysis of 1 in nonpolar media afforded homogeneous, hi-h-surface-area (ca. 450 m(2) g(-1)) xerogels (Ta2O5 . 6SiO(2)) that are amorphous up to approximately 1100degreesC. A more silica-rich tantala-silica material (Ta2O5 . 18SiO(2)) was prepared via a solution-phase co-thermolytic route with 1 and HOSi((OBu)-Bu-t)(3), to yield a material with a Si/Ta ratio of 9/1. It was demonstrated that tantala-silica materials are active as catalysts for cyclohexene oxidation. (C) 2004 Elsevier Inc. All rights reserved.

  DOI：

  10.1016/j.jcat.2004.10.015