Alkali-Metal Complexes of a Tetramethylcyclopentadienyl-Functionalized Pyrazolylborate Ligand. Structures of [Li2(THF)3B(3-Mepz)3(C5Me4)] and [K2(THF)2B(3-Mepz)3(C5Me4)]$\infty$статья
Статья опубликована в высокорейтинговом журнале
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Аннотация:The new dianionic ligand [B(3-Mepz)3(C5Me4)]2- was prepared and structurally characterized
as its lithium and potassium salts. In the solid state, [Li2(THF)3{B(3-Mepz)3}(C5Me4)]
is monomeric, while [K2(THF)2{B(3-Mepz)3}(C5Me4)]¥ consists of infinite puckered chains.
The compounds were synthesized by reaction of B(NMe2)2(C5Me4H) with 2 equiv of
3-methylpyrazole and 1 equiv of M(3-Mepz) (M ) Li, K) followed by deprotonation with
n-BuLi or KH. The crystal structure of the intermediate monoanion, [Li(THF)2{B(3-Mepz)3}-
(C5Me4H)], is also presented.