Preparation, Structure and Properties of [Tb(HIA)(2)(IA)(H2O)(2)(HgCl2)](n)(nHgCl(4))center dot 3nH(2)O (IA = Isonicotinate Anion)

Chen Wen-Tong

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Preparation, Structure and Properties of [Tb(HIA)(2)(IA)(H2O)(2)(HgCl2)](n)(nHgCl(4))center dot 3nH(2)O (IA = Isonicotinate Anion)

机译：[Tb（Hia）（2）（2）（1a）（H 2 O）（2）（2）（HgCl 2）]（N）（NHGCl（4））中央点3nH（2）O（Ia = Isononotinate阴离子）的制备，结构和性质

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A novel 4f-5d compound [Tb(HIA)(2)(IA)(H2O)(2)(HgCl2)](n)(nHgCl(4))center dot 3nH(2)O (1, IA = isonicotinate anion) has been prepared and structurally determined by X-ray diffraction. Complex 1 crystallizes in the P2(1)/c space group of the monoclinic system with a = 9.6875(3), b = 19.8318(7), c = 17.0899(5) angstrom, beta = 101.609(3)o, V = 3216.16(18) angstrom(3), C18H24Cl6Hg2N3O11Tb, M-r = 1231.20, Z = 4, D-c = 2.543 g/cm(3), mu(MoK alpha) = 12.251 mm(-1) and F(000) = 2272. The crystal structure of complex 1 is characterized by a two-dimensional (2-D) layer-like structure. The photoluminescence measurements with solid-state samples reveal that it exhibits a yellowish green emission with the emission bands locating at 490, 546, 586 and 620 nm, respectively. The photoluminescence emission bands are resulted from the characteristic emission of the 4f electrons intrashell transition of the D-5(4) -> F-7(J) (J = 6, 5, 4, 3) of the Tb3+ ion. The energy transfer mechanism is explained by using the energy level diagram of the Tb3+ ion and isonicotinic acid ligand. Complex 1 exhibits CIE chromaticity coordinates being of 0.3823 and 0.5141. A solid-state diffuse reflectance measurement shows that the complex possesses a wide optical band gap of 2.67 eV. Graphic A novel 4f-5d compound featuring a 2-D layer-like structure has been reported for the crystal structure and properties.

机译：制备了一种新型4f-5d化合物[Tb（HIA）（2）（IA）（H2O）（2）（HgCl2）]（n）（nHgCl（4））中心点3nH（2）O（1，IA=异烟酸阴离子），并用X射线衍射测定了其结构。配合物1在单斜体系的P2（1）/c空间群中结晶，a=9.6875（3），b=19.8318（7），c=17.0899（5）埃，β=101.609（3）o，V=3216.16（18）埃（3），C18H24Cl6Hg2N3O11Tb，M-r=1231.20，Z=4，D-c=2.543 g/cm（3），μ（MoKα）=12.251 mm（-1），F（000）=2272。配合物1的晶体结构为二维层状结构。固态样品的光致发光测量表明，它呈现出黄绿色发射，发射带分别位于490、546、586和620nm。光致发光发射带是由Tb3+离子的D-5（4）->F-7（J）（J=6,5,4,3）的4f电子壳层内跃迁的特征发射产生的。利用Tb3+离子和异烟酸配体的能级图解释了能量转移机理。络合物1的CIE色度坐标为0.3823和0.5141。固态漫反射测量表明，该配合物具有2.67ev的宽光学带隙。图一种具有二维层状结构的新型4f-5d化合物的晶体结构和性能已被报道。

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来源
《Journal of chemical crystallography》 |2021年第1期|共8页
作者
Chen Wen-Tong;
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Jinggangshan Univ Jiangxi Prov Key Lab Coordinat Chem Inst Appl Chem Hum Acid Utilizat Engn Res Ctr Jia Sch Chem &

Chem Engn Jian Key Lab Photoelect Crys Jian 343009 Jiangxi Peoples R China;

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正文语种 eng
中图分类晶体学;
关键词
CIE; Hydrothermal reaction; Mercury; Photoluminescence; Terbium;

机译：CIE;水热反应;汞;光致发光;铽;

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Preparation, Structure and Properties of [Tb(HIA)(2)(IA)(H2O)(2)(HgCl2)](n)(nHgCl(4))center dot 3nH(2)O (IA = Isonicotinate Anion)

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