By P. C. Wailes

ISBN-10: 0127303502

ISBN-13: 9780127303505

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Additional info for Organometallic Chemistry of Titanium, Zirconium, and Hafnium

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3Ti(CH 3) 4 + 4 B ( C H 2C 6H 5) 3 ALKYL- A N D ARYLTITANIUM(lv) COMPOUNDS 3 ( C 6H 5C H 2) 4T i . 2 ( C 2H 5 ) 20 + 4 B ( C H 3) 3 ether adduct so formed is a red oil which solidifies as orange-yellow crystals at —78°. When the reactants were brought together in equimolar amounts at — 78° in ether, tribenzylmethyltitanium was formed. p. )] and protic reagents. It has also been prepared from tribenzyltitanium chloride (G6) and methylmagnesium iodide. Surprisingly, with pyridine or 2,2 /-bipyridyl, it failed to form isolable adducts.

P. p. p. p. p. p. p. p. p. p. p. p. p. p. p. 45 82; monomer Refs. N38, N38a, N40 N38, N40 N38, N40 N38, N40 N38, N40 N38a N38, N38a, N40 N38, N40 N38, N40 N38, N40 N38, N39, N40 N38, N40 N38, N40 N38, N40 C17, N32, N36 C17, M30, M31, C17 N35 A. M O N O ( C Y C L O P E N T A D I E N Y L ) T I T A N I U M ( I V ) DERIVATIVES Table III-4 Mono(cyclopentadienyl)titanium(IV) Compound Carboxylates Refs. p. p. p. p. -diketonates), CpTiCl(acac) 2 and CpTiCl(bzac) 2, as orange solids in about 6 5 % yield (F23).

It has also been prepared from tribenzyltitanium chloride (G6) and methylmagnesium iodide. Surprisingly, with pyridine or 2,2 /-bipyridyl, it failed to form isolable adducts. 81 assigned to the ortho and meta/para aromatic protons (G5). This spectrum is almost temperature independent down to —70°. The aro­ matic proton peaks collapse into an asymmetric singlet in the presence of Fig. II-2. Structure of tetrabenzyltitanium (B16). ether or pyridine ( J l , T3). It was suggested that there is an interaction, possibly of the 77-allyl type, between the metal and the 1,2- and 7-benzyl carbon atoms which adduct formation was thought to preclude on steric grounds.

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Organometallic Chemistry of Titanium, Zirconium, and Hafnium by P. C. Wailes


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