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cis - iso -Specific Polymerization of Norbornenes by a Unique Combination of Cp* and 1,3-Butadiene Ligands on Tantalum: Crystal Structures of Cp* ( η 4 -C 4 H 6 )Ta(CH 2 Ph) 2 and Cp*(η 4 -C 4 H 6 )Ta(CHPh)(PMe 3 ) †

✍ Scribed by Mashima, Kazushi; Tanaka, Yoshiyuki; Kaidzu, Michitaka; Nakamura, Akira


Book ID
118063869
Publisher
American Chemical Society
Year
1996
Tongue
English
Weight
164 KB
Volume
15
Category
Article
ISSN
0276-7333

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✍ Steffen Blaurock; Evamarie Hey-Hawkins 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 German ⚖ 173 KB 👁 2 views

The reaction of [Cp\*MCl 4 ] (M ϭ Nb, Ta; Cp\* ϭ C 5 Me 5 ) with PH 2 R in toluene at room temperature gives the primary phosphine complexes [Cp\*MCl 4 (PH 2 R)] [Cp\* ϭ C 5 Me 5 ; M ϭ Nb: R ϭ Bu t (1a), Ad (2a), Cy (3a), Ph (4a), 2,4,6-Me 3 C 6 H 2 (Mes) (5a); M ϭ Ta: R ϭ Bu t (1b), Ad (2b), Cy (3b