[((t)Bu3SiO)Cr]2(μ-OSi(t)Bu3)2 | 877764-30-2

• 英文名称: [((t)Bu3SiO)Cr]2(μ-OSi(t)Bu3)2
• CAS: 877764-30-2
• 化学式: C₄₈H₁₀₈Cr₂O₄Si₄
• 分子量: 965.717
• InChiKey: UHRRQEAQEAUEKR-UHFFFAOYSA-N

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

反应信息

• 作为反应物：
  描述：

  [((t)Bu3SiO)Cr]2(μ-OSi(t)Bu3)2 、 二苯基重氮甲烷 以 正戊烷 为溶剂， 以56%的产率得到((t)Bu3SiO)2Cr(N2CPh2)2
  参考文献：
  名称：

  The Butterfly Dimer [(^tBu₃SiO)Cr]₂(μ-OSi^tBu₃)₂ and Its Oxidative Cleavage to (^tBu₃SiO)₂Cr(N−NCPh₂)₂ and (^tBu₃SiO)₂CrN(2,6-Ph₂-C₆H₃)

  摘要：

  Treatment of CrCl2(THF)(2) with (NaOSiBu3)-Bu-t afforded the butterfly dimer [((Bu3SiO)-Bu-t)Cr](2)(mu-(OSiBu3)-Bu-t)(2) (1(2)), whose d(CrCr) of 2.658(31) angstrom and magnetism were indicative of strong antiferromagnetic coupling. A Boltzmann distribution of low-energy (1)A(1), B-3(1), (5)A(1), B-7(1), and (9)A(1) states obtained from calculations on [(HO)(2)Cr](2)(mu OH)(2) (1'(2)) were used to provide a reasonable fit of the mu(eff) vs T data. Cleavage of 1(2) with various L (L = 4-picoline, p-tolunitrile, (BuCN)-Bu-t, (BuNC)-Bu-t, Ph2CO, and PMe3) generated ((Bu3SiO)-Bu-t)(2)CrL2 (1-L-2). The dimer was oxidatively severed by Ph2CN2 to give ((Bu3SiO)-Bu-t)(2)Cr(N2CPh2)(2) (2) and by RN3 at 23 degrees C to afford (silox)(2)Cr=NR (3-R) for bulky R (adamantyl (Ad), 2,6-Pr-i(2)-C6H3, 2,4,6-Me-3-C6H2 = Mes, 2,6-Ph-2-C6H3) and ((Bu3SiO)-Bu-t)(2)Cr(=NR)(2) (4-R) for smaller substituents (R = 1-Naph, 2-Anth). X-ray structural studies were conducted on 1(2), square planar 1-(OCPh2)(2), pseudo-T-d 2 and pseudo-trigonal 3-(2,6-Ph-2-C6H3), whose S = 1 ground state was discussed on the basis of calculations of (H3SiO)(2)Cr= NPh (3 ''-Ph).

  DOI：

  10.1021/ic051481w
• 作为产物：
  描述：

  Na(silox) 、 氯化铬(II) 以 四氢呋喃 为溶剂， 以74%的产率得到[((t)Bu3SiO)Cr]2(μ-OSi(t)Bu3)2
  参考文献：
  名称：

  The Butterfly Dimer [(^tBu₃SiO)Cr]₂(μ-OSi^tBu₃)₂ and Its Oxidative Cleavage to (^tBu₃SiO)₂Cr(N−NCPh₂)₂ and (^tBu₃SiO)₂CrN(2,6-Ph₂-C₆H₃)

  摘要：

  Treatment of CrCl2(THF)(2) with (NaOSiBu3)-Bu-t afforded the butterfly dimer [((Bu3SiO)-Bu-t)Cr](2)(mu-(OSiBu3)-Bu-t)(2) (1(2)), whose d(CrCr) of 2.658(31) angstrom and magnetism were indicative of strong antiferromagnetic coupling. A Boltzmann distribution of low-energy (1)A(1), B-3(1), (5)A(1), B-7(1), and (9)A(1) states obtained from calculations on [(HO)(2)Cr](2)(mu OH)(2) (1'(2)) were used to provide a reasonable fit of the mu(eff) vs T data. Cleavage of 1(2) with various L (L = 4-picoline, p-tolunitrile, (BuCN)-Bu-t, (BuNC)-Bu-t, Ph2CO, and PMe3) generated ((Bu3SiO)-Bu-t)(2)CrL2 (1-L-2). The dimer was oxidatively severed by Ph2CN2 to give ((Bu3SiO)-Bu-t)(2)Cr(N2CPh2)(2) (2) and by RN3 at 23 degrees C to afford (silox)(2)Cr=NR (3-R) for bulky R (adamantyl (Ad), 2,6-Pr-i(2)-C6H3, 2,4,6-Me-3-C6H2 = Mes, 2,6-Ph-2-C6H3) and ((Bu3SiO)-Bu-t)(2)Cr(=NR)(2) (4-R) for smaller substituents (R = 1-Naph, 2-Anth). X-ray structural studies were conducted on 1(2), square planar 1-(OCPh2)(2), pseudo-T-d 2 and pseudo-trigonal 3-(2,6-Ph-2-C6H3), whose S = 1 ground state was discussed on the basis of calculations of (H3SiO)(2)Cr= NPh (3 ''-Ph).

  DOI：

  10.1021/ic051481w