Controlled Polymerization of 3-Hexyne, 4-Octyne, and 5-Decyne by Nb(CHCMe2Ph)(NC6F5)[OC(CF3)3](PMe3)2 Catalyst: Structural Analysis of Catalytically Inactive Species

IF 2.9 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Organometallics Pub Date : 2025-07-18 DOI:10.1021/acs.organomet.5c00177

Akito Nishiyama, Kanchana Chatchaipaiboon and Kotohiro Nomura*,

引用次数: 0

Abstract

Reaction of Nb(CHSiMe₃)(NAr)[OC(CF₃)₃](PMe₃)₂ (Ar = 2,6-Me₂C₆H₃, C₆F₅) with 3-hexyne (10 equiv) afforded alkyne coordinated species, Nb(NAr)[OC(CF₃)₃](EtC═CEt)(PMe₃)₂, accompanied by formation of 1-trimethylsilyl-2,3,4,5-tetraethyl-1,3-cyclopentadiene, which was inactive for 3-hexyne polymerization. In contrast, the neophylidene analogue Nb(CHCMe₂Ph)(NC₆F₅)[OC(CF₃)₃](PMe₃)₂ enabled polymerizations of 3-hexyne, 4-octyne, and 5-decyne to proceed efficiently in a controlled manner without formation of inactive species.

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Nb(CHCMe2Ph)(NC6F5)[OC(CF3)3](PMe3)2催化剂控制聚合3-己炔、4-辛炔和5-癸炔：催化活性组分的结构分析

Nb(CHSiMe3)(NAr)[OC(CF3)3](PMe3)2 （Ar = 2,6- me2c6h3, C6F5）与3-己炔（10等量）反应得到炔配位产物Nb(NAr)[OC(CF3)3](EtC = CEt)(PMe3)2，生成1-三甲基硅基-2,3,4,5-四乙基-1,3-环戊二烯，该产物对3-己炔聚合无活性。相比之下，新苯胺类似物Nb(CHCMe2Ph)(NC6F5)[OC(CF3)3](PMe3)2使3-己炔、4-辛炔和5-癸炔的聚合在可控的方式下有效进行，而不会形成无活性物质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Organometallics 化学-无机化学与核化学

CiteScore

5.60

自引率

7.10%

发文量

382

审稿时长

1.7 months

期刊介绍： Organometallics is the flagship journal of organometallic chemistry and records progress in one of the most active fields of science, bridging organic and inorganic chemistry. The journal publishes Articles, Communications, Reviews, and Tutorials (instructional overviews) that depict research on the synthesis, structure, bonding, chemical reactivity, and reaction mechanisms for a variety of applications, including catalyst design and catalytic processes; main-group, transition-metal, and lanthanide and actinide metal chemistry; synthetic aspects of polymer science and materials science; and bioorganometallic chemistry.