[(tert-butylimido)Cl(4-tert-butylpyridine)(trimethylindenyl)titanium] | 159121-29-6

• 英文名称: [(tert-butylimido)Cl(4-tert-butylpyridine)(trimethylindenyl)titanium]
• CAS: 159121-29-6
• 化学式: C₂₅H₃₅ClN₂Ti
• 分子量: 446.899
• InChiKey: XDYUVIGNUODJJF-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：

  [Ti(N(t)Bu)Cl2(4-tert-butylpyridine)2] 、 lithium trimethylindenyl 以 四氢呋喃 为溶剂， 以40%的产率得到[(tert-butylimido)Cl(4-tert-butylpyridine)(trimethylindenyl)titanium]
  参考文献：
  名称：

  A general route to sandwich and half-sandwich titanium imido complexes: X-ray structure of [Ti(η⁴-Me₈taa)(NBu^t)](Me₄taa = tetramethyldibenzotetraaza[14]annulene)

  摘要：

  现成的复合物[Ti(NBut)Cl2(Butpy)2]（Butpy = 4-叔丁基吡啶）是一系列夹心和半夹心亚氨基钛衍生物的有用前体，包括[Ti(δ--C9H4Me3)(NBut)Cl(Butpy)]（C9H4Me3 = 三甲基茚基）、[Ti(δ--C5H5)2(NBut)(Butpy)]、[Ti(dmbpz)(NBut)Cl(Butpy)][dmbpz=三(3,5-二甲基吡唑基)硼酸酯]和[Ti(δ-4-Mentaa)(NBut)]{n= 4 或 8；Me(4 或 8)taa =（四或八）甲基二苯并四氮杂环戊烯[14]}。

  DOI：

  10.1039/c39940002007

文献信息

• Cyclopentadienyl, indenyl and bis(cyclopentadienyl) titanium imido compounds
  作者：Simon C. Dunn、Philip Mountford、David A. Robson

  DOI：10.1039/a605470f

  日期：——

  The titanium tert-butyl imido compounds [Ti(NBu t )Cl 2 (NC 5 H 4 R-4) n ] (R = H, n = 2 or 3; R = Bu t , n = 2) have been found to be entry points to the half-sandwich η 5 -cyclopentadienyl derivatives [Ti(η 5 -C 5 R′ 4 R″)(NBu t )Cl(NC 5 H 4 R-4)] (R = Bu t , R′ = R″ = H or Me; R = H, R′ = H, R″ = H, Me or Pr i ; R = H, R′ = Me, R″ = Me, Et or C 4 H 7 ), the η 5 -1,2,3-trimethylindenyl species [Ti(η 5 -C 9 H 4 Me 3 )(NBu t )Cl(NC 5 H 4 Bu t -4)] and the bis(η 5 -cyclopentadienyl) compound [Ti(η 5 -C 5 H 5 ) 2 (NBu t )(NC 5 H 5 )], the crystal structure of which has been determined. The complex [Ti(η 5 -C 5 H 5 )(NBu t )Cl(NC 5 H 5 )] readily loses pyridine under vacuum in the solid state to form the binuclear complex [Ti 2 (η 5 -C 5 H 5 ) 2 ( µ-NBu t ) 2 Cl 2 ]. Treatment of [Ti(η 5 -C 5 Me 4 R)(NBu t )Cl(NC 5 H 5 )] (R = Me or Et) with Na[C 5 H 5 ] gives the corresponding mixed-ring sandwich derivatives [Ti(η 5 -C 5 H 5 )(η 5 -C 5 Me 4 R)(NBu t )Cl(NC 5 H 5 )]. Addition of Li[C 9 H 7 ] to [Ti(η 5 -C 5 H 5 )(NBu t )Cl(NC 5 H 5 )] gave the η 5 -cyclopentadienyl, η 3 -indenyl mixed-ring analogue [Ti(η 5 -C 5 H 5 )(η 3 -C 9 H 7 )(NBu t )(NC 5 H 5 )]. The complex [Ti(η 5 -C 5 H 5 ) 2 (NBu t )(NC 5 H 5 )] undergoes a room-temperature cyclopentadienyl ligand-redistribution reaction with [Ti(NBu t )Cl 2 (NC 5 H 5 ) 2 ] forming [Ti(η 5 -C 5 H 5 )(NBu t )Cl(NC 5 H 5 )] in quantitative yield. Variable-temperature NMR spectra for the half-sandwich complexes show that the co-ordinated pyridine exchanges with free pyridine via an associative mechanism. The compound [Ti(η 5 -C 5 H 5 )(η 5 -C 5 Me 4 Et)(NBu t )(NC 5 H 5 )] is also fluxional and exhibits reversible pyridine dissociation at higher temperatures and restricted rotation about the Ti–N (pyridine) bond at lower temperatures.

  叔丁基亚氨基钛化合物 [Ti(NBu t)Cl 2 (NC 5 H 4 R-4) n ]（R = H，n = 2 或 3； R = Bu t ，n = 2）已被发现是半夹心η 5 -环戊二烯基衍生物[Ti(η 5 -C 5 R′ 4 R″)(NBu t )Cl(NC 5 H 4 R-4)] （R = Bu t ，R′ = R″ = H 或 Me ；R = H ，R′ = H ，R″ = H ，Me 或 Pr i ；R＝H，R′＝Me，R″＝Me，Et 或 C 4 H 7）、η 5 -1,2,3-三甲基茚基化合物[Ti(η 5 -C 9 H 4 Me 3 )(NBu t )Cl(NC 5 H 4 Bu t -4)]和双(η 5 -环戊二烯基)化合物[Ti(η 5 -C 5 H 5 ) 2 (NBu t )(NC 5 H 5 )]，其晶体结构已经确定。复合物 [Ti(η 5 -C 5 H 5 )(NBu t )Cl(NC 5 H 5 )] 在固态真空下很容易失去吡啶，形成双核复合物 [Ti 2 (η 5 -C 5 H 5 ) 2 ( µ-NBu t ) 2 Cl 2 ]。用 Na[C 5 H 5 ]处理[Ti(η 5 -C 5 Me 4 R)(NBu t )Cl(NC 5 H 5 )] (R = Me 或 Et)，可得到相应的混环夹心衍生物[Ti(η 5 -C 5 H 5 )(η 5 -C 5 Me 4 R)(NBu t )Cl(NC 5 H 5 )]。在[Ti(η 5 -C 5 H 5 )(NBu t )Cl(NC 5 H 5 )] 中加入 Li[C 9 H 7 ]，可得到 η 5 -环戊二烯基、η 3 -茚基混合环类似物[Ti(η 5 -C 5 H 5 )(η 3 -C 9 H 7 )(NBu t )(NC 5 H 5 )]。 复合物 [Ti(η 5 -C 5 H 5 ) 2 (NBu t )(NC 5 H 5 )] 与 [Ti(NBu t )Cl 2 (NC 5 H 5 ) 2 ] 发生室温环戊二烯配体再分布反应，形成 [Ti(η 5 -C 5 H 5 )(NBu t )Cl(NC 5 H 5 )] 复合物，产量定量。半夹心复合物的变温核磁共振光谱显示，配位吡啶与游离吡啶通过缔合机制发生交换。化合物[Ti(η 5 -C 5 H 5 )(η 5 -C 5 Me 4 Et)(NBu t )(NC 5 H 5 )]也具有通性，在较高温度下表现出可逆的吡啶解离，在较低温度下表现出围绕 Ti-N （吡啶）键的受限旋转。