Isolation of the parent triplet titanocene via NHC stabilisation
Meyer F., Demeshko S., Golz C., Townrow OPE., Fischer M.
We present the synthesis and characterization of the parent isolable monomeric triplet titanocene complex, stabilized by the N-heterocyclic carbene (NHC) IMe4. Investigated by SQUID magnetometry and quantum-chemical calculations, reactivity studies of the titanium precursor [Cp2Ti(btmsa)] (2) with the NHC IiPr2Me2 and the zirconocene complex [Cp2Zr(py)(btmsa)] (1) revealed divergent reactivity patterns, highlighting the role of steric and electronic effects in stabilization.