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MA_4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。
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.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
1989年第4期416-42,共1页
Acta Scientiarum Naturalium Universitatis Pekinensis
关键词
锆
铈
钍
配合物
Β-二酮
红外光谱
Infrared spectra
β-Diketonato complexes
Zirconium
Cerium
Thorium
