Reversible recrystallization process of copper and silver thioacetamide–halide coordination polymers and their basic building blocks

CrystEngComm ◽  
2014 ◽  
Vol 16 (35) ◽  
pp. 8224-8231 ◽  
Author(s):  
J. Troyano ◽  
J. Perles ◽  
P. Amo-Ochoa ◽  
J. I. Martínez ◽  
F. Zamora ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Direct Synthesis ◽  
Three Dimensional ◽  
Building Blocks ◽  
Recrystallization Process

Three-dimensional [CuX(TAA)]n (X = Br (1), I (2)) and bi-dimensional [AgX(TAA)]n (X = Cl (3), Br (4)) coordination polymers have been isolated by the direct synthesis from copper(i) and silver(i) halides and thioacetamide (TAA).

Synthesis, crystal structures and magnetic characterisation of two 2p–3d metallic coordination polymers

2017 ◽  
Vol 41 (6) ◽  
pp. 365-369 ◽  
Author(s):  
Chongchong Xue ◽  
Jingwen Shi ◽  
Daopeng Zhang
Keyword(s):  
Magnetic Susceptibility ◽  
Coordination Polymers ◽  
Supramolecular Structure ◽  
Three Dimensional ◽  
Building Blocks ◽  
Chain Structure ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
X Ray ◽  
Dimensional Network

The coordination polymers {Mg[Fe(L)(CN)5]}n·0.5nH2O and {MgCu2(CH3COO)6}n [L = bis( N-imidazolyl)methane] have been synthesised. X-ray diffraction revealed that {Mg[Fe(L)(CN)5]}n·0.5nH2O has a one-dimensional neutral chain structure consisting of alternating [Mg(L)2(H2O)2)]2+ species and [Fe(L)(CN)5]2– building blocks, which can be further linked into a three-dimensional supramolecular structure by inter-chain p–p interactions. {MgCu2(CH3COO)6}n has a three-dimensional network with the [MgCu2(CH3COO)6] unit as neutral core extended by Mg–O bonds. Magnetic susceptibility studies on {MgCu2(CH3COO)6}n revealed antiferromagnetic interactions between adjacent Cu(II) ions.

Distinct 3D CdII Coordination Polymers with 1,2-Naphthalenedicarboxylate Regulated by Dipyridyl Co-Ligands with Different Spacers

2015 ◽  
Vol 68 (6) ◽  
pp. 906
Author(s):  
Zhuo-Wei Wang ◽  
Hui Zhao ◽  
Min Hu ◽  
Chun-Sen Liu
Keyword(s):  
Coordination Polymers ◽  
Three Dimensional ◽  
Building Blocks ◽  
Metal Carboxylate ◽  
Two Dimensional ◽  
Coordination Networks ◽  
Hydrothermal Conditions ◽  
Porous Framework ◽  
3D Network ◽  
Structural Divergence

Two distinct three-dimensional (3D) CdII coordination polymers with 1,2-naphthalenedicarboxylate (ndc2–) and dipyridyl co-ligands have been synthesized under hydrothermal conditions. Interestingly, the slight difference in the two 4,4′-dipyridyl building blocks, namely, 1,2-bi(4-pyridyl)ethane (bpp) and 1,2-bi(4-pyridyl)ethene (bpe) with C–C or C=C spacers, results in the significant structural divergence of the resultant coordination polymers. Structural analysis reveals that complexes [Cd(ndc)(bpp)(H2O)]n (1) and {[Cd5(ndc)4(bpe)2(OH)2](H2O)1.5}n (2) are constructed by discrete metal–carboxylate dimeric units and metal–carboxylate chains, respectively, which are further extended by bpp or bpe linkers to form the inclined interpenetrated two-dimensional (2D)→3D network for 1 and the 3D porous framework for 2. This result reveals that the flexibility of auxiliary ligands plays an important role in the structural assemblies of coordination networks. The thermal and luminescence properties of both complexes were also investigated in solid state.

scholarly journals Lath Martensite Microstructure Modeling: A High-Resolution Crystal Plasticity Simulation Study

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 691
Author(s):  
Francisco-José Gallardo-Basile ◽  
Yannick Naunheim ◽  
Franz Roters ◽  
Martin Diehl
Keyword(s):  
High Resolution ◽  
Mechanical Behavior ◽  
Crystal Plasticity ◽  
Lath Martensite ◽  
Three Dimensional ◽  
Building Blocks ◽  
Quantitative Agreement ◽  
Carbon Steels ◽  
Plastic Behavior ◽  
Austenitic Phase

Lath martensite is a complex hierarchical compound structure that forms during rapid cooling of carbon steels from the austenitic phase. At the smallest, i.e., ‘single crystal’ scale, individual, elongated domains, form the elemental microstructural building blocks: the name-giving laths. Several laths of nearly identical crystallographic orientation are grouped together to blocks, in which–depending on the exact material characteristics–clearly distinguishable subblocks might be observed. Several blocks with the same habit plane together form a packet of which typically three to four together finally make up the former parent austenitic grain. Here, a fully parametrized approach is presented which converts an austenitic polycrystal representation into martensitic microstructures incorporating all these details. Two-dimensional (2D) and three-dimensional (3D) Representative Volume Elements (RVEs) are generated based on prior austenite microstructure reconstructed from a 2D experimental martensitic microstructure. The RVEs are used for high-resolution crystal plasticity simulations with a fast spectral method-based solver and a phenomenological constitutive description. The comparison of the results obtained from the 2D experimental microstructure and the 2D RVEs reveals a high quantitative agreement. The stress and strain distributions and their characteristics change significantly if 3D microstructures are used. Further simulations are conducted to systematically investigate the influence of microstructural parameters, such as lath aspect ratio, lath volume, subblock thickness, orientation scatter, and prior austenitic grain shape on the global and local mechanical behavior. These microstructural features happen to change the local mechanical behavior, whereas the average stress–strain response is not significantly altered. Correlations between the microstructure and the plastic behavior are established.

scholarly journals 2-Aryl-6-Polyfluoroalkyl-4-Pyrones as Promising RF-Building-Blocks: Synthesis and Application for Construction of Fluorinated Azaheterocycles

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4415
Author(s):  
Sergey A. Usachev ◽  
Diana I. Nigamatova ◽  
Daria K. Mysik ◽  
Nikita A. Naumov ◽  
Dmitrii L. Obydennov ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Building Blocks ◽  
Oxidative Cyclization ◽  
One Pot ◽  
Synthetic Application ◽  
General Method

A convenient and general method for the direct synthesis of 2-aryl-6-(trifluoromethyl)-4-pyrones and 2-aryl-5-bromo-6-(trifluoromethyl)-4-pyrones has been developed on the basis of one-pot oxidative cyclization of (E)-6-aryl-1,1,1-trifluorohex-5-ene-2,4-diones via a bromination/dehydrobromination approach. This strategy was also applied for the preparation of 2-phenyl-6-polyfluoroalkyl-4-pyrones and their 5-bromo derivatives. Conditions of chemoselective enediones bromination were found and the key intermediates of the cyclization of bromo-derivatives to 4-pyrones were characterized. Synthetic application of the prepared 4-pyrones has been demonstrated for the construction of biologically important CF3-bearing azaheterocycles, such as pyrazoles, pyridones, and triazoles.

Construction of Co/Ni-based coordination polymers with three-dimensional isostructural frameworks and multiple catalytic applications

2021 ◽  
Vol 296 ◽  
pp. 121979
Author(s):  
Xiuling Zhang ◽  
Yaoqiang Jin ◽  
Guangyin Wang ◽  
Aizhen Liu ◽  
Da-Shuai Zhang ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Three Dimensional ◽  
Catalytic Applications
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