Stepwise bromination of two acetylene molecules on a butterfly-type tetrairon core and reactivity of the resulting bromoacetylene fragment toward nucleophiles.
Treatment of the acetylene-coordinated tetrairon cluster, [(eta5-C5H4Me)4Fe4(HCCH)2]+, with N-bromosuccinimide led to stepwise bromination of two acetylene ligands to form [(eta5-C5H4Me)4Fe4(HCCBr)(HCCH)]+, [(eta5-C5H4Me)4Fe4(HCCBr)2]+, [(eta5-C5H4Me)4Fe4(BrCCBr)(HCCBr)]+, and [(eta5-C5H4Me)4Fe4(BrCCBr)2]+. The reactivity of the bromoacetylene fragment in [(eta5-C5H4Me)4Fe4(HCCBr)(HCCH)]+ toward water, pyridine, and ZnMe2 was also investigated.
Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
Masato
M
Takano
Masaaki
M
Okazaki
Hiromi
H
Tobita