New Metallocenes of Early Transition Metals with Functional Groups in Organic Ligands: Red-Ox Transformations

Dmitrii P. Krut'ko, Maxim V. Borzov, Edward N. Veksler, Roman S. Kirsanov, Andrej V. Churakov and Dmitri A. Lemenovskii

J. Pure and Appl. Chem. (2000) in print

ABSTRACT. The reduction behaviour of the novel zirconocene dichlorides, (h5-C5Me5)(h5-C5Me4CH2CH2ER2)ZrCl2 (ER2 = NMe2, PMe2, PPh2), (h5-C5Me4CH2CH2PMe2)2ZrCl2, and (h5-C5Me4CH2CH2PPh2)(h5-C5Me4CH2CH2PMe2)ZrCl2, together with the new types of intramolecular activation of inert C-H and C-heteroatom bonds are presented and discussed. A remarkably thermally stable zirconocene alkylhydryde type framework complex (h5-C5Me5)[h5,s-C5Me4CH2CH2N(Me)CH2-]ZrH, zirconocene arylhydryde complex (h5-C5Me5)[h5,s-C5Me4CH2CH2P(Ph)-o-C6H4-]ZrH, tetramethylfulvene hydride type complexes (h5-C5Me5)[h6:h1-(CH2C5Me3)CH2CH2PR2]ZrH (R = Me, Ph) and (h5-C5Me4CH2CH2PPh2)[h6:h1-(CH2C5Me3)CH2CH2PMe2]ZrH are reported. The first unusually thermally stable zirconocene (h5,h1-C5Me4CH2CH2PMe2)2Zr with the Zr(II) centre stabilized by intramolecular coordination of two Me2P-groups is described.

Laboratory of Coordination Organometallic Compounds