Abstract
Cp 2Ni reacts at −78°C with MeLi and RCCR to give thermolabile complexes of the type CpNiMe(η 2-RCCR) (R = Me ( 1), SiMe 3 ( 2)). 2-Butyne dissociates from 1 above −30°C and ethane is liberated to give (CpNi) 2(MeCCMe) ( 6) via (CpNiMe) 2(MeCCMe) ( 3), which is present in only small concentrations. 2 is more stable and reacts above 0°C to give both the known compounds (CpNi) 2(Me 3SiCCSiMe 3) ( 7) and the [bis(1,1-trimethylsilyl)-η 3-allyl]nickel compound 5 as a result of the addition of the MeNi bond to the CC bond of the coordinated alkyne in 2 followed by various rearrangements. The alkyne can be displaced from 1 and 2 in an equilibrium reaction with acetonitrile to give CpNiMe(MeCN) ( 4).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
