首页> 外文会议>Tokyo conference on advanced catalytic science and technology >Synthesis of Titanium(IV) Complexes that Contain the Bis(silylamide) Ligand of the Type 1,8-C_(10)H_6(NR)_2~(2-) (R = SiMe_3, Si~tBuMe_2, Si~iPr_3), and Olefin Polymerization Catalyzed by the 1,8-C_(10)H_6(NR)_2 TiX_2(X = Cl, Br)-cocatalyst Syste

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Synthesis of Titanium(IV) Complexes that Contain the Bis(silylamide) Ligand of the Type 1,8-C_(10)H_6(NR)_2~(2-) (R = SiMe_3, Si~tBuMe_2, Si~iPr_3), and Olefin Polymerization Catalyzed by the 1,8-C_(10)H_6(NR)_2 TiX_2(X = Cl, Br)-cocatalyst Syste

机译：含有双（甲硅烷酰亚胺）配体的钛（IV）配合物的合成1,8-C_（10）H_6（NR）_2〜（2-）（R = SIME_3，SI〜TBUME_2，SI〜IPR_3 ）和烯烃聚合由1,8-C_（10）H_6（NR）_2 Tix_2（x = Cl，Br） - 催化剂系统催化

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[1,8-C_(10)H_6(NSi~tBuMe_2)_2]TiBr_2 (4) has been prepared from dilithio salts [1,8-C_(10)H_6(NR)_2]Li_2 (2) and TiBr_4 in Et_2O. This complex showed significant catalytic activity for ethylene polymerization in the presence of a cocatalyst, and the activity is the same as those obtained by using chloride analogues such as [1,8-C_(10)H_6(NR)_2] TiCl_2 (3: R = SiMe_3, Si~tBuMe_2, Si~iPr_3). The effective cocatalyst was, however, different between the chloride and the bromide complexes. [ArNCH_2CH_2CH_2Nar]TiCl_2 (5, Ar = 2,6-~iPr_2C_6H_3), which has been known as an effective catalyst for polymerization of 1-hexene, showed lower activity under the same conditions. The broad molecular weight distributions (M_w/M_n) for the resultant polymer can be attributed to the scission of titanium-nitrogen bond by cocatalyst, because the narrow M_w/M_n value (1.8) was observed if the polymerization was stopped at the initial stage (2 min) under the same reaction conditions.

机译：[1,8-C_（10）H_6（NSI〜TBUME_2）_2] TIBR_2（4）已经由Intithio Salts [1,8-C_（10）H_6（NR）_2] Li_2（2）和触发_4在et_2O中制备。该综合物在助催化剂存在下显示出对乙烯聚合的显着催化活性，并且活性与通过使用氯类似物质如[1,8-C_（10）H_6（NR）_2] TiCl_2（3： r = sime_3，si〜tbume_2，si〜ipr_3）。然而，有效的助催化剂在氯化物和溴络合物之间存在不同。 [Arnch_2CH_2CH_2NAR] TICL_2（5，AR = 2,6-〜IPR_2C_6H_3）已知为1-己烯聚合的有效催化剂，在相同条件下表现出较低的活性。所得聚合物的宽分子量分布（M_W / M_N）可归因于助催化剂的钛 - 氮键的分布，因为如果在初始阶段停止聚合（以较窄的M_W / M_N值）（1.8）则观察到窄M_W / M_N值（1.8） 2分钟）在相同的反应条件下。

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《Tokyo conference on advanced catalytic science and technology》|1999年||共4页
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Kazuo Takaoki; Kotohiro Nomura; Naofumi Naga; Akio Imai;
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中图分类催化反应过程;
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Synthesis of Titanium(IV) Complexes that Contain the Bis(silylamide) Ligand of the Type 1,8-C_(10)H_6(NR)_2~(2-) (R = SiMe_3, Si~tBuMe_2, Si~iPr_3), and Olefin Polymerization Catalyzed by the 1,8-C_(10)H_6(NR)_2 TiX_2(X = Cl, Br)-cocatalyst Syste

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