两个7-氧杂-二苯芴-3，11-二磺酸镉化合物的合成、结构与荧光性质研究(英)

通过使用浓硫酸对2，2′-二羟基-1，1′-二萘的磺化与成环反应得到一种新配体，7-氧杂-二苯芴-3，11-二磺酸。通过水热方法得到了它的两个化合物，[CdL(bipy)₂(H₂O)][Cd(bipy)₂(H₂O)₂]·L·H₂O (1)和[CdL(phen)₂(H₂O)]·5H₂O (2)，并通过X-射线单晶衍射分析进行结构表征。化合物1以P1空间群结晶，晶胞参数为a=1.205 5(6)，b=1.576 4(8)，c=1.954 5(10) nm，α=75.755(9)，β=88.093(10)，γ=89.035(10)°。化合物2以P2₁/ c空间群结晶，晶胞参数为a=2.104 0(7)，b=1.358 0(4)，c=1.428 9(5) nm，β=94.543(6)°。在化合物1中，有两个独立的镉(Ⅱ)离子不对称单元，在其中镉(1)离子和两个联吡啶上的四个氮原子，磺酸配体上的一个氧原子及一个水分子配位；镉(2)离子和两个联吡啶上的四个氮原子和两个水分子配位。两种固体化合物在室温下均显示强的蓝色荧光。

Synthesis, Structures, and Photoluminescence Studies of Two Cadmium(Ⅱ) Complexes of 7-Oxa-dibenzofluorene-3,11-disulfonate

A new ligand, 7-oxa-dibenzofluorene-3,11-disulfonic acid (H2L), was synthesized by sulfonation and ring closure of 2,2′-dihydroxyl-1,1′-binaphthalene with concentrated sulfuric acid. Its two complexes, [CdL(bipy)2(H2O)][Cd(bipy)2(H2O)2]·L·H2O (1) (bipy=2,2(-bipyridyl) and [CdL(phen)2(H2O)]·5H2O (2) (phen=1,10-phenan-throline), were obtained by a hydrothermal route, and structurally characterized by X-ray single-crystal diffraction.Compound 1 crystallized in space group P1 with cell parameters a=1.205 5(6), b=1.576 4(8), c=1.954 5(10) nm,α=75.755(9), β=88.093(10), and γ=89.035(10)°. In 1, there are two independent Cd(Ⅱ) ions in the asymmetric unit, in which one Cd(1) ion is coordinated with four nitrogen atoms from two bipy molecules, one oxygen atom of L2- anion, and one water molecule; the Cd(2) ion is coordinated with four bipyridyl nitrogen atoms and two water molecule. Compound 2 crystallized in space group P21/c with cell parameters a=2.104 0(7), b=1.358 0(4), c=1.428 9(5) nm, and β=94.543(6)°. In 2, the coordination environment of Cd(Ⅱ) ion is similar to that of Cd(1) ion in 1, producing a mononuclear unit. Both compounds exhibit strong blue photoluminescence in the solid state at room temperature. CCDC: 1, 258028; 2, 258029.