Synthesis and Structure of a New Type of Sandwich-Like Yttrium Complex Derived from Tetraphenylethylene: [Na(THF)6][Y(Ph2CCPh2)2]статья
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Дата последнего поиска статьи во внешних источниках: 20 марта 2018 г.
Аннотация:Yttrium trichloride reacts with both Na2[Ph2CCPh2] and K2[Ph2CCPh2], made from Ph2CdCPh2
and sodium and potassium mirrors, respectively, to form complexes of general formula [M(THF)x][Y(Ph2-CCPh2)2] (M) Na, 1; K, 2; x ) 4-6). Complex 2 undergoes cation exchange with NaBPh4 in THF to form crystals of [Na(THF)6][Y(Ph2CCPh2)2](THF)2, 3, suitable for X-ray diffraction. The anionic unit in 3, [Y(Ph2CCPh2)2]-, has a sandwich-like structure in which each (Ph2CCPh2)2- dianion has six carbon atoms oriented toward the metal center with Y-C distances ranging from 2.518(6) to 2.689(7) Å.