Organoantimony ring-chain equilibria: Trapping of catena-tetrastibanes in cyclo-[Cr(CO)(4)(R ' Sb-2-SbR-SbR-SbR '(2))] (R ' = Me, Ph; R = Me3SiCH2) and related complexes

Citation
Hj. Breunig et al., Organoantimony ring-chain equilibria: Trapping of catena-tetrastibanes in cyclo-[Cr(CO)(4)(R ' Sb-2-SbR-SbR-SbR '(2))] (R ' = Me, Ph; R = Me3SiCH2) and related complexes, ORGANOMETAL, 20(7), 2001, pp. 1360-1364
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
0276-7333 → ACNP
Volume
20
Issue
7
Year of publication
2001
Pages
1360 - 1364
Database
ISI
SICI code
0276-7333(20010402)20:7<1360:ORETOC>2.0.ZU;2-D
Abstract
Ring-chain equilibria between cyclo-(Me3SiCH2Sb)(n) (n = 4, 5) and R'Sb-4(2 ) (R' = Me, Ph) contain the catena-tristibanes R'Sb-2-SbR-SbR'(2) (1, R' = Me; 2, R' = Ph, R = Me3SiCH2) as the most abundant chain components. Additi on of [nbdCr(CO)(4)] (nbd = norbornadiene) to the equilibrium mixture forme d from cyclo-(Me3SiCH2Sb)(n) (n = 4, 5) and R'Sb-4(2) (R' = Me, Ph) gives c yclo-[Cr(CO)(4)(R'Sb-2-SbR-SbR-SbR'(2))] (3, R' = Me; 4, R' = Ph, R = Me3Si CH2), two complexes with catena-tetrastibane ligands. Reaction of 3 with [W (CO)(5)(thf)] (thf = tetrahydrofuran) leads to cyclo-[Cr(CO)(4)(Me2Sb-SbR-S bR-SbMe2)W(CO)(5)] = (R = Me3SiCH2) (5). The crystal structures of 3 and 5 have been determined by X-ray diffraction.