Crystal structure, magnetic, fluorescent, electrochemical properties and thermal stability of a new copper(II) coordination polymer [Cu2(C5H4NCOO)2(C7H5N4)2]n

2015 ◽  
Vol 70 (4) ◽  
pp. 215-219 ◽  
Author(s):  
Wei Li ◽  
Chang-Hong Li ◽  
Ying-Qun Yang ◽  
Heng-Feng Li
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Coordination Polymer ◽  
Electrochemical Properties ◽  
Three Dimensional ◽  
Antiferromagnetic Interaction ◽  
Electrode Reactions ◽  
Dimensional Network ◽  
Binuclear Structure ◽  
Thermal Stability Of

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.

scholarly journals A New 3D Coordination Polymer of Bismuth with Nicotinic AcidN-Oxide

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Farzin Marandi ◽  
Ingo Pantenburg ◽  
Gerd Meyer
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
Water Molecules ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
X Ray ◽  
H Nmr ◽  
Thermal Stability Of

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.

Synthesis, Crystal Structure and Thermal Properties of Silver(I) Bromide Ethylenediamine Coordination Polymers

2004 ◽  
Vol 59 (9) ◽  
pp. 992-998 ◽  
Author(s):  
Christian Näther ◽  
Andreas Beck
Keyword(s):  
Crystal Structure ◽  
Thermal Properties ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
Compound I ◽  
Major Phase ◽  
Dimensional Network ◽  
Pure Phase ◽  
Compound Ii ◽  
Silver Atoms

Reaction of silver(I) bromide with ethylenediamine (en) leads to the formation of the 1:1 compound poly[AgBr(μ2-en-N,N’)] (I). In the crystal structure the silver atoms of AgBr dimers are connected to two bridging bromine atoms and two nitrogen atoms of different en ligands. The dimers are thus connected by the ligands into layers via μ-N,N’ coordination. In the 2:1 coordination polymer poly[(AgBr)2(μ2-en-N,N’)] (II) a three-dimensional AgBr substructure occur which consists of helical AgBr chains that are connected via peripheral Ag-Br contacts into a three-dimensional network that contains large channels. The en ligands are situated in these channels bridging the Ag atoms. From solution this compound cannot be obtained as a pure phase, since compound I is always formed as the major phase. On heating the 1:1 compound I in a thermobalance the sample mass decreases slowly and several mass steps are observed, which are not fully resolved. If the reaction is stopped at 230°C, pure AgBr has formed. At 115°C only traces of compound II are found. The major phase consists of an as yet unidentified ligand poor compound.

Synthesis, crystal structure, and thermal stability of 1D coordination polymer [Zn(BDOA)(Py)2(H2O)] n

2013 ◽  
Vol 39 (2) ◽  
pp. 225-228 ◽  
Author(s):  
L. J. Li ◽  
X. X. Hua ◽  
G. Y. Wang ◽  
Y. Y. Huang ◽  
L. Z. Wang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Coordination Polymer ◽  
1D Coordination Polymer ◽  
Thermal Stability Of

Poly[[diaqua-μ6-succinato-di-μ5-succinato-diholmium(III)] monohydrate]

2006 ◽  
Vol 62 (7) ◽  
pp. m1620-m1622 ◽  
Author(s):  
Bin Yu ◽  
Xiao-Qing Wang ◽  
Ru-Ji Wang ◽  
Guang-Qiu Shen ◽  
De-Zhong Shen
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Water Molecule ◽  
Network Structure ◽  
Three Dimensional ◽  
Twofold Axis ◽  
Uncoordinated Water Molecule ◽  
Carboxylate Groups ◽  
Dimensional Network ◽  
Tricapped Trigonal Prism

The HoIII center in the title coordination polymer, {[Ho2(C4H4O4)3(H2O)2]·H2O} n , is nine-coordinated in a tricapped trigonal prism by eight O atoms, derived from six carboxylate groups and a water molecule. One of the independent succinate anions is located about a crystallographic center of inversion and the uncoordinated water molecule lies on a twofold axis. The crystal structure comprises edge-shared HoO9 polyhedra linked by succinate bridges, forming a three-dimensional network structure.

Chiral Helices in a 3D Network of Zn2(en)V2O7 (en = Ethylenediamine)

2008 ◽  
Vol 55-57 ◽  
pp. 669-672 ◽  
Author(s):  
S. Krachodnok ◽  
K.J. Haller ◽  
I.D. Williams
Keyword(s):  
Thermal Stability ◽  
Three Dimensional ◽  
Monoclinic Space Group ◽  
Tg Analysis ◽  
X Ray ◽  
X Ray Crystallography ◽  
Organic Hybrid ◽  
Dimensional Network ◽  
3D Network ◽  
Thermal Stability Of

An inorganic-organic hybrid vanadate complex, Zn2(en)V2O7 (en = ethylenediamine) has been hydrothermally synthesized and characterized by single-crystal X-ray crystallography, TG analysis, IR spectroscopy, and elemental analysis. The title compound crystallizes in the monoclinic space group P21 with a = 7.0885(7), b = 8.6040(9), c = 8.1869(8) Å, b = 112.224(2)° and V = 462.22(8) Å3, T = 298±2 K and R1[I>2s(I)] = 0.0291 for 2170 observed reflections. The structure consists of undulating sheets constructed from helical chains that share Zn coordination centers with repeating units propagated into a helix by the two-fold screw axes at 0, y, ½ and pillared with alternating VO4 tetrahedra to generate a 3D chiral network. Neighboring helices are interconnected by µ2-O bridges to form the three-dimensional network. The strength of the network is reinforced by hydrogen bonding. TG analysis shows thermal stability of the network up to 283 °C.

Synthesis and Characterization of a Three-dimensional Coordination Polymer Based on Copper(II) Nitrate and a Tridentate Tetrazole Ligand

2009 ◽  
Vol 64 (11-12) ◽  
pp. 1535-1541 ◽  
Author(s):  
Vera Hartdegen ◽  
Thomas M. Klapötke ◽  
Stefan M. Sproll
Keyword(s):  
Thermal Stability ◽  
Coordination Polymer ◽  
Physical Stability ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Thermal Stabilities ◽  
Dsc Measurements ◽  
Ethyl Amine ◽  
Thermal Stability Of

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

The purine–carboxylate-containing coordination polymer poly[[μ4-1-(2-carboxylatoethyl)-6-oxo-6,9-dihydro-1H-purin-9-ido]zinc(II)]

2013 ◽  
Vol 69 (11) ◽  
pp. 1314-1316
Author(s):  
Wen-Juan Ma ◽  
Guo-Ting Li
Keyword(s):  
Thermal Stability ◽  
Coordination Polymer ◽  
Title Compound ◽  
Topological Structure ◽  
Three Dimensional ◽  
Two Dimensional ◽  
One Dimensional ◽  
Metal Organic ◽  
Very High ◽  
Thermal Stability Of

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.

scholarly journals Synthesis, crystal structure, and thermal stability of double borate Na3ErB2O6

2021 ◽  
Vol 8 (4) ◽  
pp. 20218402
Author(s):  
Alexey K. Subanakov ◽  
Evgeniy V. Kovtunets ◽  
Bair G. Bazarov ◽  
Jibzema G. Bazarova
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Phase Transitions ◽  
Solid State ◽  
Solid State Reaction ◽  
Rietveld Method ◽  
Three Dimensional ◽  
Dsc Measurements ◽  
Reversible Phase ◽  
Thermal Stability Of

Double borate Na3ErB2O6 was synthesized by the solid-state reaction. The crystal structure of Na3ErB2O6 was refined by the Rietveld method: P21/c, a = 6.49775(14) Å, b = 8.50424(17) Å, c = 12.0067(3) Å, β = 118.4797(9)°, Z = 4. The crystal structure of Na3ErB2O6 consists of –[ErO6]∞-chains along the "b" axis, which are linked by BO3 triangles in a three-dimensional framework. Sodium atoms occupy empty positions inside the channels. The thermal behavior of Na3ErB2O6 was studied in detail in the range of 25–1150 °C range by DSC and TG methods. Na3ErB2O6 congruently melts at 1116 °C. Based on the results of DSC measurements, three reversible phase transitions were found for Na3ErB2O6.

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