Structure and Thermal Stability of a Novel 2-D Layered Copper(II) Coordination Polymer with the Bidentate Ligand 1, 2, 4-Triazol-5-one

2004 ◽  
Vol 630 (3) ◽  
pp. 423-426 ◽  
Author(s):  
Gui Xia Ma ◽  
Tong Lai Zhang ◽  
Jian Guo Zhang ◽  
Kai Bei Yu
2012 ◽  
Vol 68 (9) ◽  
pp. m235-m237 ◽  
Author(s):  
Wei-Lu Xiong ◽  
Qing-Yan Liu ◽  
Na Zhang ◽  
Leng Wang

The title compound, [Zn(C8H4O4)]n, consists of one ZnIIcation and one benzene-1,2-dicarboxylate dianion (BDC2−) as the building unit. The ZnIIcation is four-coordinated by four carboxylate O atoms from four dianionic BDC2−ligands in a distorted tetrahedral geometry. The ZnIIcations are linked by the BDC2−ligands to generate a structure featuring two-dimensional zinc–carboxylate layers containing left- and right-handed helical chains. The two-dimensional layers are stacked along theadirection. The thermal stability of the title compound has been studied.


2015 ◽  
Vol 70 (4) ◽  
pp. 215-219 ◽  
Author(s):  
Wei Li ◽  
Chang-Hong Li ◽  
Ying-Qun Yang ◽  
Heng-Feng Li

AbstractA new copper(II) coordination polymer [Cu2(C5H4NCOO)2(C7H5N4)2]n (1) has been synthesized with 4-pyridinecarboxylate and 3-(pyridin-2-yl)-1,2,4-triazolyl ligands. The crystal structure shows that two neighboring copper(II) ions are coordinated with two deprotonated (anionic) 3-(pyridin-2-yl)-1,2,4-triazole ligands to form a binuclear structure. Adjacent binuclear units are linked by 4-pyridinecarboxylate anions to form a three-dimensional network structure. The magnetic, fluorescent, and electrochemical properties and thermal stability of 1 were studied. The results show that 1 exhibits antiferromagnetic interaction, and upon excitation at 318 nm, it has an intense fluorescent emission at approximately 430 nm. The electron transfer of 1 is irreversible in electrode reactions. The thermogravimetric analysis shows that 1 is stable below 240 °C.


2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Farzin Marandi ◽  
Ingo Pantenburg ◽  
Gerd Meyer

The new three-dimensional coordination polymer {[Bi(NNO)2(NO3)]·1.5H2O}n(1, NNO−= nicotinateN-oxide) was synthesized and characterized by elemental analysis, IR and1H-NMR spectroscopy, as well as single-crystal X-ray diffraction analysis.1crystallizes in the monoclinic space group C2/c. The crystal structure consists of a rectangular-shaped grid constructed with NNO linkers. Cavities of a diameter of 7.9–8.3 Å2are filled with disordered water molecules. The thermal stability of the compound was evaluated by thermogravimetric analysis.


2013 ◽  
Vol 39 (2) ◽  
pp. 225-228 ◽  
Author(s):  
L. J. Li ◽  
X. X. Hua ◽  
G. Y. Wang ◽  
Y. Y. Huang ◽  
L. Z. Wang ◽  
...  

2009 ◽  
Vol 64 (11-12) ◽  
pp. 1535-1541 ◽  
Author(s):  
Vera Hartdegen ◽  
Thomas M. Klapötke ◽  
Stefan M. Sproll

Tris(2-(1H-tetrazol-1-yl)ethyl)amine (1) was synthesized as gas-generating agent and characterized by vibrational (IR) and NMR spectroscopy. The energetic properties were determined by bomb calorimetric measurements along with calculations using the EXPLO5 software. Tris(2-(1H-tetrazol- 1-yl)ethyl)amine (1) was used for further reactions with copper(II) nitrate to form a three-dimensional coordination polymer 3. Both compounds were characterized by single crystal X-ray diffraction. The thermal stability was determined by DSC measurements and the physical stability by BAMstandards. Tris(2-(1H-tetrazol-1-yl)ethyl)amine (1) proved to be suitable as gas-generating agent with sufficient physical and thermal stabilities. The low thermal stability of the copper complex 3 disqualifies it as potential colorant agent for pyrotechnical applications


2013 ◽  
Vol 69 (11) ◽  
pp. 1314-1316
Author(s):  
Wen-Juan Ma ◽  
Guo-Ting Li

The title compound, [Zn(C8H6N4O3)]nor [Zn(L)]n[H2Lis 3-(6-oxo-6,9-dihydro-1H-purin-1-yl)propionic acid], crystallized as a nonmerohedral twin. The ZnIIcation is four-coordinated, ligated by two carboxylate O atoms from twoLligands and two N atoms from another two ligands. Each ligand bridges four ZnIIcentres, extending the structure into a three-dimensional polymer with a 4-connected (65,41) topological structure containing two-dimensional homochiral layers constructed from one-dimensional metal–organic helices. Investigation of the thermal stability of the compound shows that the network has very high thermostability and is stable up to 720 K.


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