Reactivity of titanium (II) Arene derivatives with substituted alkynes. Cyclooligomerization reactions and crystal and molecular structure of [η4??C4 (C6H5) 4] Ti [(μ??Br) 2 …

F Calderazzo, F Marchetti, G Pampaloni…

Index: Calderazzo, Fausto; Marchetti, Fabio; Pampaloni, Guido; Hiller, Wolfgang; Antropiusova, Helena; Mach, Karel Chemische Berichte, 1989 , vol. 122, p. 2229 - 2238

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Citation Number: 22

Abstract

Abstract By treating Ti (η 6-toluene)[(μ-X) 2 (AlX 2)] 2 (X= Cl: 1a, X= Br 1b) with C 2 R 2 (R= Me, Ph) tetraorganylcyclobutadiene complexes of formula Ti (η 4-C 4 R 4)[(μ-X) 2 (AlX 2)] 2 (R= Ph, X= Cl: 2a, X= Br: 2b; R= Me, X= Br: 3b) have been obtained in good yields. Compound 2b has been studied by X-ray diffraction methods. The titanium atom possesses an approximate square pyramidal coordination, the apical position being occupied by the ...

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