Intramolecular coupling of two cyclopentadienyl ring systems of zirconium-unprecedented formation of a dihydride and preparation of the [{(MeC5H4)Zr}(5)(mu(5)-N)(mu(3)-NH)(4)(mu-NH2)(4)] cluster in a two-phase system

Authors
Bai, GC Muller, P Roesky, HW Uson, I
Citation
Gc. Bai et al., Intramolecular coupling of two cyclopentadienyl ring systems of zirconium-unprecedented formation of a dihydride and preparation of the [{(MeC5H4)Zr}(5)(mu(5)-N)(mu(3)-NH)(4)(mu-NH2)(4)] cluster in a two-phase system, ORGANOMETAL, 19(23), 2000, pp. 4675-4677
Citations number
53
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
02767333 → ACNP
Volume
19
Issue
23
Year of publication
2000
Pages
4675 - 4677
Database
ISI
SICI code
0276-7333(20001113)19:23<4675:ICOTCR>2.0.ZU;2-P
Abstract
Reaction of (ClMe2SiC5H4)(2)ZrCl2 (1) with K (Na) in liquid ammonia/toluene at -78 degreesC gave the ansa-zirconocene dihydride [{HN(SiMe2C5H4)(2)Zr(m u -H)H}(2)] (3). Alternatively, treatment of (MeC5H4)(2)ZrCl2 (2) with K (N a) or NaNH2 in liquid ammonia/toluene produced the zirconium cluster [{(MeC 5H4)Zr}(5)(mu (5)-N)-(mu (3)-NH)(4)(mu -NH2)(4)] (4). The reaction of 2 wit h NaNH2 in THF led also to the formation of 4.