The electric property and structure of some fluorescein derivatives and their rare earthcomplexes have been reported before.In order to investigate the effect of differentsubstituents on the electric property,the chan...The electric property and structure of some fluorescein derivatives and their rare earthcomplexes have been reported before.In order to investigate the effect of differentsubstituents on the electric property,the change of resistivity with temperature of eosin B(disodium salt of dibromodinitrofluorescein),rose bengal (disodium salt of tetrachlorotetraiodofluorescein),eosin 10B (dipotassium salt of dichlorotetrabromofluorescein) andtheir complexes with La(Ⅲ),Ce(Ⅲ),Gd(Ⅲ) and Y(Ⅲ) is studied in this paper.展开更多
The C4R4 and Li4R4 type molecules which have come into notice recently have a distinctive tetrahedral configuration （see Fig. 1）. Their syntheses and specific properties have been reported by many authors. We were i...The C4R4 and Li4R4 type molecules which have come into notice recently have a distinctive tetrahedral configuration （see Fig. 1）. Their syntheses and specific properties have been reported by many authors. We were interested in studying the展开更多
Like many other properties of the molecular orbital (MO), such as energy level,electron negativity and charge distribution, the binding force of the molecular orbitalis regarded as an important physical concept to des...Like many other properties of the molecular orbital (MO), such as energy level,electron negativity and charge distribution, the binding force of the molecular orbitalis regarded as an important physical concept to describe the binding property of themolecular orbital. The MO’s are divided into binding orbital, nonbinding orbital andantibinding orbital according to their respective binding effect. The binding charac-ter of an MO can be determined through the measurement of the changes in展开更多
文摘The electric property and structure of some fluorescein derivatives and their rare earthcomplexes have been reported before.In order to investigate the effect of differentsubstituents on the electric property,the change of resistivity with temperature of eosin B(disodium salt of dibromodinitrofluorescein),rose bengal (disodium salt of tetrachlorotetraiodofluorescein),eosin 10B (dipotassium salt of dichlorotetrabromofluorescein) andtheir complexes with La(Ⅲ),Ce(Ⅲ),Gd(Ⅲ) and Y(Ⅲ) is studied in this paper.
文摘The C4R4 and Li4R4 type molecules which have come into notice recently have a distinctive tetrahedral configuration （see Fig. 1）. Their syntheses and specific properties have been reported by many authors. We were interested in studying the
文摘Like many other properties of the molecular orbital (MO), such as energy level,electron negativity and charge distribution, the binding force of the molecular orbitalis regarded as an important physical concept to describe the binding property of themolecular orbital. The MO’s are divided into binding orbital, nonbinding orbital andantibinding orbital according to their respective binding effect. The binding charac-ter of an MO can be determined through the measurement of the changes in
