scholarly journals Structural and Thermal Investigations of Co(II) and Ni(II) Coordination Polymers Based on biphenyl-4,4′-dioxydiacetate Linker

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3545
Author(s):  
Halina Głuchowska ◽  
Renata Łyszczek ◽  
Liliana Mazur ◽  
Alexander M. Kirillov
Keyword(s):  
Thermal Stability ◽  
Coordination Polymers ◽  
Linear Chain ◽  
Structural Diversity ◽  
Decomposition Products ◽  
1D Coordination Polymer ◽  
Decomposition Processes ◽  
Thermal Investigations ◽  
Thermal Decomposition Products ◽  
Metal Organic

Two coordination polymers, [Co(µ4-L)(H2O)2]n (1) and [Ni(µ-L)(H2O)4]n (2), were solvothermally assembled from the corresponding metal(II) chlorides and biphenyl-4,4-dioxydiacetic acid (H2L) as a flexible dicarboxylate linker. The cobalt(II) compound 1 featured a layer-pillared 3D metal-organic network with a cds topology, while the nickel(II) derivative 2 represented a linear chain 1D coordination polymer with a 2C1 topology. The µ4− and µ-L2− linkers exhibited different denticity and coordination modes in the synthesized compounds, thus contributing to their structural diversity. The dimensionality of 1 and 2 had an influence on their thermal stability and decomposition processes, which were investigated in detail by TG-DSC and TG-FTIR methods. Thermal decomposition products of coordination polymers were also analyzed by PXRD, confirming the formation of Co3O4/CoO and NiO as final materials. The obtained compounds broaden a family of coordination polymers assembled from flexible dicarboxylate linkers.

scholarly journals STUDY OF THERMAL DECOMPOSITION PRODUCTS OF NITROGEN-PHOSPHORUS-POTASSIUM FERTILIZERS BASED ON AMMONIUM NITRATE BY X-RAY DIFFRACTUON

2017 ◽  
Vol 61 (1) ◽  
pp. 72
Author(s):  
Konstantin G. Gorbovskiy ◽  
Alena S. Ryzhova ◽  
Andrey M. Norov ◽  
Denis A. Pagaleshkin ◽  
Valentina N. Kalinina ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Decomposition ◽  
Phosphoric Acid ◽  
Ammonium Nitrate ◽  
Confined Space ◽  
Decomposition Products ◽  
X Ray ◽  
Thermal Decomposition Products ◽  
Nitrogen Phosphorus ◽  
Thermal Stability Of

Complex mineral ammonium nitrate-based fertilizers are complex multicomponent salt systems possessing low thermal stability and prone to self-sustaining decomposition. This leads to the need to increase the requirements for fire and explosion safety in their manufacture, storage and transportation, caused by the fact that ammonium nitrate is a solid oxidant able to support a combustion, and its heating in confined space can lead to detonation. Components that make up such fertilizers can both reduce (phosphates and ammonium sulfate) and accelerate (chlorine compounds) decomposition of ammonium nitrate. Thus, the thermal stability of fertilizers based on ammonium nitrate largely depends on the ratio of the components that make up its composition or formed as a result of the chemical reaction. The simplest way to reduce the content of ammonium nitrate and increase the thermal stability of fertilizer without changing the content of essential nutrients is to increase the degree of phosphoric acid ammoniation. In this paper, the phase composition change of grade 22:11:11 nitrogen-phosphorus-potassium fertilizer obtained with different ammoniation degree in the process of thermal decomposition was studied by X-ray phase analysis. To obtain this fertilizer, wet-process phosphoric acid obtained sulfuric acid attack of the Khibin apatite concentrate by a hemihydrate method is used. It is shown that an increase in the ammoniation degree has a significant effect on the exothermic decomposition of ammonium nitrate and the amount of material that is released into the gas phase. The phases formed at each stage of the decomposition are determined.Forcitation:Gorbovskiy K.G., Ryzhova A.S., Norov A.M., Pagaleshkin D.A., Kalinina V.N., Mikhaylichenko A.I. Study of thermal decomposition products of nitrogen-phosphorus-potassium fertilizers based on ammonium nitrate by X-ray diffractuon. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 1. P. 72-77

The structural diversity and photoluminescent properties of cadmium thiophenedicarboxylate coordination polymers

2014 ◽  
Vol 43 (19) ◽  
pp. 7219-7226 ◽  
Author(s):  
Li-Ping Xue ◽  
Xin-Hong Chang ◽  
Shi-Hui Li ◽  
Lu-Fang Ma ◽  
Li-Ya Wang
Keyword(s):  
Thermal Stability ◽  
Coordination Polymers ◽  
Structural Diversity ◽  
Donor Ligands ◽  
Photoluminescence Properties

Two series of Cd(ii) CPs based on two positional isomeric thiophenedicarboxylic acids and N-donor ligands have been synthesized. Moreover, the thermal stability and photoluminescence properties of these complexes are investigated.

New metal–organic frameworks derived from pyridine-3,5-dicarboxylic acid: structural diversity arising from the addition of templates into the reaction systems

CrystEngComm ◽  
2020 ◽  
Vol 22 (11) ◽  
pp. 2083-2096 ◽  
Author(s):  
Eleni E. Moushi ◽  
Andreas Kourtellaris ◽  
Eleni Andreou ◽  
Athina Fidelli ◽  
Giannis S. Papaefstathiou ◽  
...  
Keyword(s):  
Metal Ions ◽  
Dicarboxylic Acid ◽  
Coordination Polymers ◽  
Metal Organic Frameworks ◽  
Structural Diversity ◽  
Reaction Systems ◽  
Metal Organic

The effect of aminoalcohol/polyol template molecules in the formation of MOFs based on bipositive metal ions and pyridine-3,5-dicalboxylate ligand was investigated providing access to a series of new multidimensional coordination polymers.

Amalgamating 4′-substituted 4,2′:6′,4′′-terpyridine ligands with double-helical chains or ladder-like networks

RSC Advances ◽  
2016 ◽  
Vol 6 (11) ◽  
pp. 9270-9277 ◽  
Author(s):  
Guoqi Zhang ◽  
Jiawen Tan ◽  
Tonya Phoenix ◽  
David R. Manke ◽  
James A. Golen ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Self Assembly ◽  
Structural Diversity ◽  
Metal Organic ◽  
Terpyridine Ligands ◽  
First Time

HgII-mediated self-assembly of metal–organic coordination polymers based on 4,2′:6′,4′′-terpyridine derivatives is for the first time presented and the structural diversity dependent upon the use of 4′-substituents of ligand is revealed.

Diverse Structures and Physicochemical Properties of Four Zinc–Tripyridyltriazole Coordination Polymers Regulated by Counter-Ions

2016 ◽  
Vol 69 (1) ◽  
pp. 33 ◽  
Author(s):  
Xi Wang ◽  
Ya-Mei Guo
Keyword(s):  
Thermal Stability ◽  
Coordination Polymers ◽  
Critical Role ◽  
Structural Diversity ◽  
Counter Ions ◽  
1D Chain ◽  
Synergistic Modulation ◽  
Multiple Conformations ◽  
Coordination Patterns ◽  
Organic Linker

Four distinct ZnII coordination polymers [Zn(L5)Cl2]n (1), [Zn(L5)I2]n (2), {[Zn(L5)(N3)2](H2O)2}n (3), and {[Zn(L5)2(H2O)](ClO4)2(CH3OH)}n (4) were prepared by assembling a multidentate tripyridyltriazole building block 3-(2-pyridyl)-4-(4-pyridyl)-5-(3-pyridyl)-1,2,4-triazole (L5) with different ZnII salts. Compounds 1, 2 and 4 display distinguishing 1D chain-like coordination patterns whereas 3 reveals a 2D uninodal four-connected network, which can be well regulated by different counter-ions. Further, the building tecton L5 exhibits multiple conformations in these structures. The structural diversity reveals that the synergistic modulation of counter-ions and the adaptable conformations of the organic linker play a critical role in the structural construction. Solid-state properties including thermal stability and fluorescence were investigated as well.

scholarly journals Heteroleptic LaIII Anilate/Dicarboxylate Based Neutral 3D-Coordination Polymers

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2486
Author(s):  
Olesya Y. Trofimova ◽  
Arina V. Maleeva ◽  
Irina V. Ershova ◽  
Anton V. Cherkasov ◽  
Georgy K. Fukin ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Coordination Polymer ◽  
Coordination Polymers ◽  
Spectral Characteristics ◽  
Metal Organic Frameworks ◽  
Chloranilic Acid ◽  
Synthetic Procedure ◽  
Anionic Ligands ◽  
Metal Organic ◽  
3D Framework

Three new 3D metal–organic frameworks of lanthanum based on mixed anionic ligands, [(La2(pQ)2(BDC)4)·4DMF]n, [(La2(pQ)2(DHBDC)4)·4DMF]n, [(La2(CA)2(BDC)4)·4DMF]n (pQ—dianion of 2,5-dihydroxy-3,6-di-tert-butyl-para-quinone, CA—dianion of chloranilic acid, BDC-1,4-benzenedicarboxylate, DHBDC-2,5-dihydroxy-1,4-benzenedicarboxylate and DMF-N,N′-dimethylformamide), were synthesized using solvothermal methodology. Coordination polymers demonstrate the rare xah or 4,6T187 topology of a 3D framework. The homoleptic 2D-coordination polymer [(La2(pQ)3)·4DMF]n was obtained as a by-product in the course of synthetic procedure optimization. The thermal stability, spectral characteristics and porosity of coordination polymers were investigated.

scholarly journals Structural diversity of six metal–organic frameworks from a rigid bisimidazole ligand and their adsorption of organic dyes

RSC Advances ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 4039-4048 ◽  
Author(s):  
Siyu Liu ◽  
Mingming Guo ◽  
Huadong Guo ◽  
Yingying Sun ◽  
Xianmin Guo ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Organic Dyes ◽  
Metal Organic Frameworks ◽  
Structural Diversity ◽  
Adsorption Behaviors ◽  
Metal Organic

Six entangled coordination polymers from a bisimidazole ligand and versatile carboxylate acids have been synthesized and structurally characterized. Their adsorption behaviors to organic dyes have also been evaluated.

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