Synthesis and structural characterisation of the phenyl/scorpionate hybrid ligand [Ph(pz)BC5H10]−

The new phenyl/scorpionate hybrid ligand [Ph(pz)BC5H10]− has been synthesised and structurally characterised as K+ and Tl+ salt. The ligand is specifically designed to create half-sandwich complexes in which the metal ion is chelated by the π-electron system of the phenyl ring and by the electron lone pair of the pyrazolyl nitrogen atom. This structural motif is established both by K[Ph(pz)BC5H10] and by Tl[Ph(pz)BC5H10].