College of Chemistry and Chemical Engineering, Xuchang University, Xuchang, Henan 461000, People's Republic of China.
J Fluoresc. 2013 Jan;23(1):7-12. doi: 10.1007/s10895-012-1122-5. Epub 2012 Aug 25.
A rare earth ytterbium complex with 2,4,6-pyridinetricarboxylic acid (H(3)pta) has been synthesized by hydrothermal method, the formula is {[Yb(2)(pta)(2)(H(2)O)(3)]·H(2)O}(n). The complex crystallized in monoclinic system, P2(1)/c space group with lattice parameters a = 11.6556(19)Å, b = 7.8364(12), c = 22.020(4), α = γ = 90º, β = 92.120(3), Z = 4, GOF = 1.026, R1 = 0.0334, wR2 = 0.0660. The pta anions connect four rare earth Yb(III) ions with two different coordination modes. The complex exhibit intense characteristic near-infrared luminescence of Yb(III) ions at 990 nm with excitation of UV-rays.
一种以 2,4,6-吡啶三甲酸（H(3)pta）为配体的镱（III）配合物通过水热法合成，其化学式为{[Yb(2)(pta)(2)(H(2)O)(3)]·H(2)O}(n)。该配合物属于单斜晶系，P2(1)/c 空间群，晶胞参数为 a = 11.6556(19)Å, b = 7.8364(12), c = 22.020(4), α = γ = 90º, β = 92.120(3), Z = 4, GOF = 1.026, R1 = 0.0334, wR2 = 0.0660。pta 阴离子通过两种不同的配位模式连接四个镱（III）离子。该配合物在近红外区（990nm）具有强烈的镱（III）离子特征近红外发光，激发光为紫外光。
