Synthesis and structure of alkylzinc 3,5-diphenylpyrazolates: Dramatic influence of steric and solvent effects
Szymon Komorski , Michał K. Leszczynski , Iwona Justyniak , Janusz Lewiński
AbstractThree new structurally varied alkylzinc derivatives of 3,5-diphenylpyrazole with different coordination modes of pyrazolate ligands were synthesized and structurally characterized. The observed aggregation mode of the original trimeric aggregate [tBuZn(pzPh2)]3 is entirely different from the commonly anticipated ring-stacking and ring-laddering principle for the related compounds, thus providing a new look at the aggregation and stabilization of alkylzinc species. The reaction of R2Zn (R = Et, tBu) with 3,5-diphenylpyrazole results in the formation of three structurally diverse alkylzinc pyrazolates: a novel dinuclear tetrahydrofuran solvate, an unprecedented trimeric structure, and a spiro trinuclear aggregate. Structural analysis of the resulting complexes provides a new look at the aggregation and stabilization of alkylzinc species.
|Journal series||Inorganic Chemistry, ISSN 0020-1669, (A 45 pkt)|
|Publication size in sheets||0.3|
|Score|| = 40.0, 31-01-2020, ArticleFromJournal|
= 45.0, 31-01-2020, ArticleFromJournal
|Publication indicators||= 6; = 5; : 2016 = 1.203; : 2016 = 4.857 (2) - 2016=4.503 (5)|
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