Reiß Fabian, Reiß Melanie, Spannenberg Anke, Jiao Haijun, Hollmann Dirk, Arndt Perdita, Rosenthal Uwe, Beweries Torsten
Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany.
Chemistry. 2017 Oct 12;23(57):14158-14162. doi: 10.1002/chem.201703444. Epub 2017 Sep 18.
Coordination of the alkyl-substituted alkynes Me SiC CH R (1: R=SiMe ; 2: R=N(SiMe ) ) to titanocene centres [Cp' Ti] (Cp'=Cp, Cp*) yields stable alkyne complexes of the type Cp' Ti(η -Me SiC CH R) (3: Cp'=Cp, R=SiMe ; 5: Cp'=Cp, R=N(SiMe ) ; 6: Cp'=Cp*, R=SiMe ) that are not prone to alkyne/allene isomerisation. When reacting alkyne 2 with Cp TiCl and Mg formation of the complex Cp* Ti(III)(η -Me SiC CH ) (7) which displays a propargylic unit coordinated to the Ti centre takes place. All complexes were fully characterised, the molecular structures for 5, 6, and 7 are discussed.
烷基取代的炔烃MeSiC≡CHR（1：R = SiMe₃；2：R = N(SiMe₃)₂）与二茂钛中心[Cp'Ti]（Cp' = Cp，Cp*）配位，生成稳定的炔烃配合物Cp'Ti(η²-MeSiC≡CHR)（3：Cp' = Cp，R = SiMe₃；5：Cp' = Cp，R = N(SiMe₃)₂；6：Cp' = Cp*，R = SiMe₃），这些配合物不易发生炔烃/丙二烯异构化。当炔烃2与Cp₂TiCl₂和Mg反应时，会形成配合物Cp*₂Ti(III)(η²-MeSiC≡CH₂)（7），其中显示一个炔丙基单元与Ti中心配位。所有配合物均得到了充分表征，并讨论了5、6和7的分子结构。
