Seven Novel Lanthanide Oxalatophosphonates with Two Types of 3D Framework Structures Based onN-Morpholinomethylphosphonic Acid: Syntheses, Crystal Structures, and Luminescence Properties

2009 ◽  
Vol 9 (7) ◽  
pp. 3228-3234 ◽  
Author(s):  
Yan-Yu Zhu ◽  
Zhen-Gang Sun ◽  
Hui Chen ◽  
Jing Zhang ◽  
Yan Zhao ◽  
...  
RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 79041-79049 ◽  
Author(s):  
Chao Ma ◽  
Cheng-Qi Jiao ◽  
Zhen-Gang Sun ◽  
Yan-Yu Zhu ◽  
Xiao-Wen Zhang ◽  
...  

Two novel cadmium(ii) carboxyphosphonates with 3D framework structure have been synthesized under hydrothermal conditions. The luminescence properties and molecular recognition properties of the compounds have been investigated.


2010 ◽  
Vol 10 (1) ◽  
pp. 406-413 ◽  
Author(s):  
Lei Liu ◽  
Zhen-Gang Sun ◽  
Na Zhang ◽  
Yan-Yu Zhu ◽  
Yan Zhao ◽  
...  

2021 ◽  
Vol 236 (1-2) ◽  
pp. 11-21
Author(s):  
Evgeny V. Nazarchuk ◽  
Oleg I. Siidra ◽  
Dmitry O. Charkin ◽  
Stepan N. Kalmykov ◽  
Elena L. Kotova

Abstract Three new rubidium polychromates, Rb2[(UO2)(Cr2O7)(NO3)2] (1), γ-Rb2Cr3O10 (2) and δ-Rb2Cr3O10 (3) were prepared by combination of hydrothermal treatment at 220 °C and evaporation of aqueous solutions under ambient conditions. Compound 1 is monoclinic, P 2 1 / c $P{2}_{1}/c$ , a = 13.6542(19), b = 19.698(3), c = 11.6984(17) Å, β = 114.326(2)°, V = 2867.0(7) Å3, R 1 = 0.040; 2 is hexagonal, P 6 3 / m $P{6}_{3}/m$ , a = 11.991(2), c = 12.828(3) Å, γ = 120°, V = 1597.3(5) Å3, R 1 = 0.031; 3 is monoclinic, P 2 1 / n $P{2}_{1}/n$ , a = 7.446(3), b = 18.194(6), c = 7.848(3) Å, β = 99.953(9)°, V = 1047.3(7) Å3, R 1 = 0.037. In the crystal structure of 1, UO8 bipyramids and NO3 groups share edges to form [(UO2)(NO3)2] species which share common corners with dichromate Cr2O7 groups producing novel type of uranyl dichromate chains [(UO2)(Cr2O7)(NO3)2]2−. In the structures of new Rb2Cr3O10 polymorphs, CrO4 tetrahedra share vertices to form Cr3O10 2− species. The trichromate groups are aligned along the 63 screw axis forming channels running in the ab plane in the structure of 2. The Rb cations reside between the channels and in their centers completing the structure. The trichromate anions are linked by the Rb+ cations into a 3D framework in the structure of 3. Effect of solution acidity on the crystallization of polychromates in uranyl-bearing systems is discussed.


2017 ◽  
Vol 249 ◽  
pp. 136-140 ◽  
Author(s):  
Chaonan Wang ◽  
Pingjing Feng ◽  
Jintang Li ◽  
Xuetao Luo

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