A new route to tris(pyrazolyl)borate ligands and new structural variations in TlTp complexes †
作者:Christoph Janiak、Lothar Braun、Frank Girgsdies
DOI:10.1039/a902264c
日期:——
Tris(pyrazolyl)borate ligands were synthesized by a new route from MeBBr2 and pyrazole derivatives under very mild conditions at room temperature to give TlL complexes. For LÂ =Â [MeB(3,5-Me2pz)3]â a bridging co-ordination of the ligand is found, interpreted as sterically enforced upon comparison with the structures for LÂ =Â [MeB(3-Mepz)3]â and [HB(3,5-Me2pz)3]â.