A new scorpionate ligand: Tris(4,4-dimethyl-2-oxazolinyl)borate and its zirconium(IV) complexes
|Title||A new scorpionate ligand: Tris(4,4-dimethyl-2-oxazolinyl)borate and its zirconium(IV) complexes|
|Publication Type||Journal Article|
|Year of Publication||2008|
|Authors||Dunne JF, Su JC, Ellern A, Sadow AD|
|Type of Article||Article|
|Keywords||Amine, ASYMMETRIC, catalysis, EFFICIENT SYNTHESIS, ethylene polymerization, HINDERED HYDROTRIS(PYRAZOLYL)BORATE LIGANDS, molecular-structure, POLYPYRAZOLYLBORATE LIGANDS, RAY CRYSTAL-STRUCTURES, STRUCTURAL-CHARACTERIZATION, TRIS(PYRAZOLYL)BORATE ZIRCONIUM|
The first example of a new class of oxazoline-based scorpionate ligand, tris(4,4-dimethyl-2-oxazolinyl)phenyl borate, [To(M)](-), is prepared by reaction of 2-lithio-4,4-dimethyl-2-oxazolide and 0.3 equiv of dichlorophenylborane. The steric bulk of this ligand is greater than that of tris(3,5-Me-2-pyrazolyl)borate (Tp*), as quantified by comparison of solid angles of crystallographically characterized zirconium(IV) complexes.