An uncommon highly oxidized multiple bonded Re_2 ~(8+) speciesf

摘要

A long-sought metal-metal bonded species with an M_2~(8+) core has been structurally characterized. The diamagnetic compound {[Re_2(hpp)_3(OH)(O_3SCF_3)120(μ-O)_2}(O_3SCF_3)_2, 2, has two δ~2π~4 electron-poor triple-bonded Re_2~(8+) units embraced by three bicyclic guanidinate ligands (hpp) and axial OH and triflate groups; the two dimetal units are held together by bridging oxo-groups.