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用溶剂热法合成了稀土-有机配位聚合物{[Ln(H2O)2(O2CCH2CH2CO2)3].H2O}n(Ln=Eu(Ⅲ),Sm(Ⅲ))。采用红外光谱、X射线单晶衍射对其结构进行了表征。结果表明:两个晶体同属于单斜晶系,空间群为C2/c,含铕配位聚合物1的晶体结构参数为:a=2.000(04)nm,b=0.7780(02)nm,c=1.387(03)nm,α=90°,β=121.58(3)°,γ=90°,V=1.838(66)nm3,Z=4,F(000)=1344,Mr=706.18,Dc=2.551 Mg/m3,μ=6.839 mm-1,R1=0.0357,ωR2=0.1012;含钐配位聚合物2的晶体结构参数为:a=2.0072(02)nm,b=0.7822(26)nm,c=1.3901(61)nm,α=90°,β=121.5840°,γ=90°,V=1.8593(3)nm3,Z=4,F(000)=1336,Mr=70296,Dc=2.511 Mg/m3,μ=6.333mm-1,R1=0.0210,ωR2=0.0498。同时研究了它们的固体荧光性能。
The rare earth - organic coordination polymer {[Ln (H2O) 2 (O2CCH2CH2CO2) 3] .H2O} n (Ln = Eu (Ⅲ), Sm (Ⅲ)) was synthesized by solvothermal method. Its structure was characterized by IR and X-ray single crystal diffraction. The results show that the two crystals belong to the monoclinic system and the space group is C2 / c. The crystal structure parameters of Europium-containing coordination polymer 1 are as follows: a = 2.000 (04) nm, b = 0.7780 = 1.387 (03) nm, α = 90 °, β = 121.58 (3) °, γ = 90 °, V = 1.838 (66) nm3, Z = 4, F (000) = 1344, 2.551 Mg / m3, μ = 6.839 mm-1, R1 = 0.0357 and ωR2 = 0.1012. The crystal structure parameters of samarium-containing coordination polymer 2 are: a = 2.0072 (02) nm, b = 0.7822 = 1.3901 (61) nm, α = 90 °, β = 121.5840 °, γ = 90 °, V = 1.8593 nm3, Z = 4, F000 = 1336, Mr = 70296, Dc = 2.511 Mg / m3, μ = 6.333 mm-1, R1 = 0.0210, ωR2 = 0.0498. Their solid fluorescence properties were also studied.