ANSA-NIOBOCENE COMPLEXES - SYNTHESIS AND CHARACTERIZATION OF NOVEL COMPLEXES [ME(2)SI(ETA(5)-C5H4)(2)]NBCL2 AND [ME(2)SI(ETA(5)-C5H4)(2)]NBCL(RC-CR) (R=ME,PH) - X-RAY CRYSTAL-STRUCTURE OF [ME(2)SI(ETA(5)-C5H4)(2)]NBCL(MEC-CME)

Authors
ANTINOLO A MARTINEZRIPOLL M MUGNIER Y OTERO A PRASHAR S RODRIGUEZ AM
Citation
A. Antinolo et al., ANSA-NIOBOCENE COMPLEXES - SYNTHESIS AND CHARACTERIZATION OF NOVEL COMPLEXES [ME(2)SI(ETA(5)-C5H4)(2)]NBCL2 AND [ME(2)SI(ETA(5)-C5H4)(2)]NBCL(RC-CR) (R=ME,PH) - X-RAY CRYSTAL-STRUCTURE OF [ME(2)SI(ETA(5)-C5H4)(2)]NBCL(MEC-CME), Organometallics, 15(15), 1996, pp. 3241-3243
Citations number
23
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Organometallics → ACNP
ISSN journal
02767333
Volume
15
Issue
15
Year of publication
1996
Pages
3241 - 3243
Database
ISI
SICI code
0276-7333(1996)15:15<3241:AC-SAC>2.0.ZU;2-E
Abstract
The ansa-niobocene(IV) dichloride complex [Me(2)Si(eta(5)-C5H4)(2)]NbC l2 (1) has been prepared by the reaction of NbCl4(THF)(2) and [Me(2)Si (C5H4)(2)]Tl-2 in THF. The reduction of 1 by sodium amalgam in the pre sence of an alkyne (2-butyne or diphenylacetylene) yielded the ansa-ni obocene(III) monochloride alkyne complexes [Me(2)Si(eta(5)-C5H4)(2)]Nb Cl(RC=CR) (R = Me (2), Ph (3)). Compounds 1-3 were characterized by IR , ESR, and NMR spectroscopy. In addition, the structure of 2 was deter mined by single-crystal X-ray diffraction.