One-dimensional coordination polymers in the crystal structures of sodium and potassium acetylacetonatesстатья
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Дата последнего поиска статьи во внешних источниках: 15 июля 2015 г.
Аннотация:The mixed ligand complexes [K2(acac)2(H2O)]∞ (I), [K2(acac)2(phen)(H2O)]∞ (II), [Na(acac)(H2O)]∞ (III), [Na3(acac)3(iPrOH)]∞ (IV), [Na3(acac)3(Py)]∞ (V), and [Na2(acac)2(phen)]∞ (VI) (Hacac = pentane-2,4-dione; phen = 1,10-phenanthroline; iPrOH = iso-propanol; Py = pyridine) were synthesized by reaction of the alkaline metal tert-butyloxide in dried solvent (iPrOH, benzene or Py) with Hacac and phen. Products were characterized by elemental analysis, 1H-NMR and FTIR spectroscopy and thermal analysis. The single-crystal structure were determined for novel compounds II, IV and VI, and refined for I. The structures of I-VI consist of one-dimensional polymeric chains or ribbons which are described as a combination of formal binuclear structural blocks [M2(acac)2] of four types. The quantum chemical calculation of [M2(acac)2] four isomers allowed us to explain different stability of formal building blocks with M = Na and K.