摘要
La(TTA)_3 2TPPO(TTA:噻吩甲酰三氟丙酮根,TPPO:三苯基氧化膦)配合物的晶体结构说明它属于三斜晶系,空间群P_1^-,单胞里有2个分子.晶胞参数:α=1.1223(16)nm,b=1.2275(7)nm,c=2.356(2)nm,α=80.13(5)°,β=77.12(9)°,γ=70.39(8)°.V=2.964(5)nm^3,ρ=1.523 g·cm^(-3).λ(MoK_α)=0.071073nm.最终偏离因子R=0.048.La(Ⅲ)与8个氧原子(其中6个由3个噻吩甲酰三氟丙酮基提供,2个由2个三苯基氧化膦提供)配位.平均La—O键长是0.25nm.
The crystal structure of La(TTA)_3 2TPPO(TTA:thenoyltri- fluoroacetonato,TPPO:triphenylphosphine oxide)complex shows that it crystallizes in the triclinic space group P_1^- with two molecules in the unit cell. The cell dimensions are α=1.1223(16)nm,δ=1.2275(7)nm,c=2.356(2)nm, α=80.13(5)°,β=77.12(9)°,r=70.39(8)°,V=2.904(5)nm^3 ρ=1.523 g.cm^(-3), λ(MoK_α)=0.071073 nm.The final calculated R value is 0.048,The lantha- num ion is coordinated to eight oxygen atoms(six from the three thenoyl- trifluoroacetone groups,two from the two triphenylphosphine oxides).The average La—O bond length is 0.25 nm.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
1992年第3期374-378,共5页
Journal of Beijing Normal University(Natural Science)
基金
北京分子动态及静态结构国家重点实验室资助
关键词
晶体结构
镧配合物
远红外光谱
crystal structure
lanthanum coordination
compound far
infrared spectrum
