[(η5-C5H4CH2CH2Br)Ti(Br)(μ-NPy-2)]2 | 269412-21-7

• 英文名称: [(η5-C5H4CH2CH2Br)Ti(Br)(μ-NPy-2)]2
• CAS: 269412-21-7
• 化学式: C₂₄H₂₄Br₄N₄Ti₂
• 分子量: 783.857
• InChiKey: AUUJAJXPYVUARX-UHFFFAOYSA-L

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：

  (η5-C5H4CH2CH2Br)TiBr3 、 lithium 2-pyridylamidate 在 Et₃N 作用下， 以 四氢呋喃 为溶剂， 以58%的产率得到[(η5-C5H4CH2CH2Br)Ti(Br)(μ-NPy-2)]2
  参考文献：
  名称：

  Syntheses of titanium μ-arylimido and μ-pyridylimido complexes bearing (un)substituted cyclopentadienyl ligand

  摘要：

  The reactions of (eta(5)-C5H4CH2CH2Br)TiBr3, (eta(5)-C5H4CH2CH2OCH3)TiCl3, (eta(5)-C5H4-CH2-cyclo-C4H7O)TiCl3 and (eta(5)-C5H5)TiCl3 with an equivalent of 2-MeOC6H4NHLi in the presence of Et3N afford mu-arylimido complexes, [(eta(5)-C5H4CH2CH2Br)Ti(Br)(mu-NC6H4OCH3-2)](2) (1), [(eta(5)-C5H4CH2OCH3)Ti(Cl)(mu-NC6H4OCH3-2)](2) (2), [(eta(5)-C5H4-CH2-cyclo-C4H7O)Ti(Cl)(mu-NC6H4-OCH3-2)](2) (3), [(eta(5)-C5H5)Ti(Cl)(mu-NC6H4OCH3-2)](2) (4), which include intramolecular titanium and oxygen coordination. Complex 4 can also be obtained by reaction of the (eta(5)-C5H5)(2)TiCl2 with 2-MeOC6H4NHLi. Meanwhile refluxing of (eta 5-C5H5)(3)TiCl2 with an equivalent of 2-Me2NC6H4NMg.THF in toluene gives another mu-arylimido complex, [(eta(5)-C5H5)Ti(Cl)(mu-NC6H4NMe2-2)](2), which contains intramolecular titanium and nitrogen coordination. In addition, the analogous reactions of the above substituted half-sandwich Cp titanium complexes with PhNHLi in the presence of Et3N lead to [(eta(5)-C5H4CH2CH2Br)Ti(Br)(mu-NPh)](2), [(eta(5)-C5H4CH2OCH3)Ti(Cl)(mu-NPh)](2). The addition of 2-MeC6H4NHLi to (eta(5)-C5H4CH2CH2OCH3)TiCl3 and (eta(5)-C5H5)TiCl3 affords imido derivatives [(eta(5)-C5H5)Ti(Cl)(mu-NC6H4CH3-2)](2) and [(eta(5)-C5H4CH2OCH3)Ti(Cl)(mu-NC6H4CH3-2)](2). [(eta(5)-C5H5)Ti(Cl)(mu-NC6H3Me2-2,6)](2) is prepared by refluxing of (eta(5)-C5H5)TiCl3 and 2,6-Me2C6H3NMg.THF in toluene. The titanium mu-pyridylimido complexes, [(eta(5)-C5H5)Ti(Cl)(mu-NPy-2)](2), [(eta 5-C5H4CH2CH2OCH3)Ti(Cl)(mu-NPy-2)](2) and [(eta(5)-C5H4CH2CH2Br)Ti(Br)(mu-NPy-2)](2), are synthesized by reactions of the above corresponding half sandwich Cp titanium complexes with an equivalent of 2-PyNHLi in the presence of Et3N, respectively. Compound 1 crystallizes in the triclinic space group P (1) over bar (no. 2) with a = 9.942(2), b = 10.057(3), c = 8.457(2) Angstrom, alpha = 111.28(2), beta = 106.71(2), gamma = 98.12(2)degrees, V = 725.5(4) Angstrom(3), Z = 2.The catalytic activity and selectivity of compound 4 for the styrene polymerization is also investigated. (C) 2000 Elsevier Science S.A. All rights reserved.

  DOI：

  10.1016/s0022-328x(99)00732-9