【摘要】 制备了四价d°金属离子锆（Ⅳ）,铈（Ⅳ）和钍（Ⅳ）与乙酰丙酮（HAA）、苯甲酰丙酮（HBA）,二苯甲酰甲烷（HDBM）和2-噻吩甲酰三氟丙酮（HTTA）等四种β-二酮（HA）之间的12种MA₄型固体配合物,并研究了它们在4000—100cm^-1范围的红外光谱。对配体取代基与中心金属对M-O键伸缩吸收及金属螯整环羰基伸缩吸收等的影响关系作了讨论。更多还原

【Abstract】 The tetrakis β-diketonates of Zr (Ⅳ), Ce(Ⅳ) and Th(Ⅳ) with acetylacetone, ben-zoylacetone, dibenzoylmethane and thenoyltrifluoroacetone have been prepared and their infrared spectra have been observed in the 4000-100cm-1 range.Absorption bands due to M-O stretching vibrations are observed in the 450-400cm-1 and 300-200cm-1 regions. The later is nearly pure M-O stretching mode, having a tendency to show towards lower frequency side with an increase in the mass of the central metal, and they decrease for each metal ion in the order.M(AA)4>M(BA)4>M(TTA)4>M(DBM)4The absorption band due to the carbonyl group and that due to the C = C bond, observed in MA4 spectra, are in 1621-1581cm-1 and 1581-1522cm-1·The change of wave numbers corresponding to C = O stretching band are connected with the changes of wave numbers corresponding to M-O stretching bands.更多还原