Synthesis, molecular structure and NMR behaviour of [9,9-(PMe2Ph)2-arachno9,6,8-PtS2B7H7]: Direct evidence for the ten-vertex borane vertex-flip mechanism of isomerization
摘要:
The ten-vertex cluster compound [9,9-(PMe2Ph)2-arachno-9,6,8-PtS2B7H7] is fluxional between its two enantiomers via a vertex-flip of the {Pt(PMe2Ph)2} group between the eta3-10,4,8 and eta3-10,5,6 positions of the formal nine-vertex arachno-shaped {S2B7H7} ligand moiety.