摘要:
Photolysis of Zr(C6F5NCH2CH2OCH2)(2)(CH2Ph)(2) at 435 nm results in formation of the metalated dimer {Zr[C6F4NCH2CH2OCH2CH2OCH2CH2NC6F5][CH2Ph]}(2).(C7H8)(2) (1), the bridging difluoride dimer {Zr[C6F5NCH2CH2OCH2CH2OCH2CH2NC6F5][F]}(2)[mu-F](2) (2), and bibenzyl. Complex 1 was characterized by NMR spectroscopy (H-1, F-19, C-13) and X-ray crystallography. In the solid state 1 adopts a pentagonal bipyramidal geometry at each zirconium center with a eta(1)-benzyl group occupying one of the axial positions. The bridging difluoride 2 was characterized by H-1 and F-19 NMR spectroscopy. For comparison purposes, Zr(C6F5NCH2CH2OCH2)(2)Me-2 (3) was synthesized and characterized by NMR spectroscopy and X-ray crystallography. Photolysis of 3 at 435 nm does not result in any reaction.