| Abstract
| - The facile formation of the unusual monomeric alkenyl-substituted pyrazolato aluminumdichloride [(3,5-tBu2-N-CHC(SiMe3)-pz)AlCl2] (2; 3,5-tBu2pz = 3,5-di-tert-butylpyrazolato)was achieved in high yield by reacting dimeric pyrazolato aluminum dichloride [η1-η1-3,5-tBu2pz(μ-Al)Cl2]2 (1) with 2 equiv of trimethylsilylethine. The addition of 1 and 2 equiv ofK[3,5-tBu2pz] to 2, respectively, resulted in the formation of two novel complexes, [(3,5-tBu2-N-CHC(SiMe3)-pz)AlCl(3,5-tBu2pz)] (3) and [(3,5-tBu2-N-CHC(SiMe3)-pz)Al(η1-3,5-tBu2pz)(η2-3,5-tBu2pz)] (4), for which crystallographic data are presented. The coordination ofthe pyrazolato ligand in 3 represents an extreme example of a “slipped” η2-coordination.
- The facile formation of the unusual monomeric alkenyl-substituted pyrazolato aluminum dichloride [(3,5-tBu2-N-CHC(SiMe3)-pz)AlCl2] (2; 3,5-tBu2pz = 3,5-di-tert-butylpyrazolato) was achieved in high yield by reacting the dimeric aluminum compound [η1-η1-3,5-tBu2pz(μ-Al)Cl2]2 (1) with 2 equiv of trimethylsilylethine. Investigations of the reactivity of compound 2 by preparing two novel complexes, [(3,5-tBu2-N-CHC(SiMe3)-pz)AlCl(3,5-tBu2pz)] (3) and [(3,5-tBu2-N-CHC(SiMe3)-pz)Al(η1-3,5-tBu2pz)(η2-3,5-tBu2pz)] (4), show that 2 serves as an ideal precursor for a variety of compounds.
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