Immobilization of a Boron Center-Functionalized Scorpionate Ligand on Mesoporous Silica Supports for Heterogeneous Tp-Based Catalysts

To
develop novel immobilized metallocomplex catalysts, allyltris­(3-trifluoromethylpyrazol-1-yl)­borate
(allyl-TpCF3) was synthesized. A boron-attached allyl group
reacts with thiol to afford the desired mesoporous silica-immobilized
TpCF3. Cobalt­(II) is an efficient probe for estimating
the structures of the immobilized metallocomplexes. The structures
of the formed cobalt­(II) complexes and their catalytic activity depended
on the density of the organic thiol groups and on the state of the
remaining sulfur donors on the supports.