[2]borametallocenophanes of group 4 metals: synthesis and structure.

We report a series of [2]borametallocenophanes of Ti, Zr, and Hf with various ligand systems. The ligands have been synthesized in high yields starting from 1,2-dibromo-1,2-bis(dimethylamino)diborane(4) upon reaction with Na[C5H5] and Li[C13H9], respectively. All compounds were fully characterized by multinuclear NMR spectroscopy and, for selected examples, by X-ray analysis.

Preparation and structural characterization of transition-metal complexes featuring the cymantrenyl(bromo)boryl ligand.

In the present paper, we describe the first structural characterization of cymantrenyl(dihalo)borane and report on its use for the synthesis of novel cymantrenylboryl complexes.

The first Pd(II) complex of a non-heteroatom stabilised carbene ligand.

Di(p-tolyl)diazomethane reacts with the tripyrrinate TrpyPdOAc(F) 1 after activation with NaBAr(F) to yield the first stable Pd(II) complex 2 of a non-Arduengo type carbene ligand, which could be characterised by X-ray crystallography.