scholarly journals Coordination-Driven Supramolecular Syntheses of New Homo- and Hetero- polymetallic Cu(I) Assemblies : Solid-State and Solution Characterization

2021 ◽  
Author(s):  
Ali M. Khalil ◽  
Chendong Xu ◽  
Vincent Delmas ◽  
Guillaume Calvez ◽  
Karine Costuas ◽  
...  
Keyword(s):  
Solid State ◽  
One Dimensional ◽  
The One

Coordination-driven supramolecular (CDS) syntheses between the pre-assembled tetrametallic flexible precursor A and pseudo-halide dicyanamide N(CN)2- (DCM) and azido N3- ions afforded selectively the discrete Cu8 assembly D and the one-dimensional...

The luminescence attenuation in the solid state by fluoride anion entrapped in the one-dimensional Zn(II) dioximate and mononuclear Cd(II) dioxime compounds

Polyhedron ◽  
2016 ◽  
Vol 109 ◽  
pp. 107-114 ◽  
Author(s):  
Eduard B. Coropceanu ◽  
Lilia Croitor ◽  
Anatolii V. Siminel ◽  
Yurii Chumakov ◽  
Marina S. Fonari
Keyword(s):  
Solid State ◽  
Fluoride Anion ◽  
One Dimensional ◽  
The One

3-(Pyridin-4-yl)acetylacetone: CdII and HgII compete for nitrogen coordination

2017 ◽  
Vol 73 (9) ◽  
pp. 724-730 ◽  
Author(s):  
Khai-Nghi Truong ◽  
Carina Merkens ◽  
Ulli Englert
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Carbonyl Group ◽  
Coordination Sphere ◽  
Aqua Ligand ◽  
Polymeric Chain ◽  
One Dimensional ◽  
Distorted Octahedral Coordination ◽  
Distorted Octahedral ◽  
The One

3-(Pyridin-4-yl)acetylacetone (HacacPy) acts as a pyridine-type ligand towards CdII and HgII halides. With CdBr2, the one-dimensional polymer [Cd(μ-Br)2(HacacPy)Cd(μ-Br)2(HacacPy)2]∞ is obtained in which five- and six-coordinated CdII cations alternate in the chain direction. Reaction of HacacPy with HgBr2 results in [Hg(μ-Br)Br(HacacPy)]∞, a polymer in which each HgII centre is tetracoordinated. In both compounds, each metal(II) cation is N-coordinated by at least one HacacPy ligand. Equimolar reaction between these CdII and HgII derivatives, either conducted in ethanol as solvent or via grinding in the solid state, leads to ligand redistribution and the formation of the well-ordered bimetallic polymer catena-poly[[bromidomercury(II)]-μ-bromido-[aquabis[4-hydroxy-3-(pyridin-4-yl)pent-3-en-2-one]cadmium(II)]-di-μ-bromido], [CdHgBr4(C10H11NO2)2(H2O)] n or [{HgBr}(μ-Br){(HacacPy)2Cd(H2O)}(μ-Br)2]∞. HgII and CdII cations alternate in the [100] direction. The HacacPy ligands do not bind to the HgII cations, which are tetracoordinated by three bridging and one terminal bromide ligand. The CdII centres adopt an only slightly distorted octahedral coordination. Three bromide ligands link them in a (2 + 1) pattern to neighbouring HgII atoms; two HacacPy ligands in a cis configuration, acting as N-atom donors, and a terminal aqua ligand complete the coordination sphere. Classical O—H...Br hydrogen bonds stabilize the polymeric chain. O—H...O hydrogen bonds between aqua H atoms and the uncoordinated carbonyl group of an HacacPy ligand in a neighbouring strand in the c direction link the chains into layers in the (010) plane.

Supramolecular Assemblies of Polyphosphorus Ligands Based on Weak Tl–P and In–P Interactions

2014 ◽  
Vol 69 (11-12) ◽  
pp. 1348-1356 ◽  
Author(s):  
Martin Fleischmann ◽  
Stefan Welsch ◽  
Laurence J. Gregoriades ◽  
Christian Gröger ◽  
Manfred Scheer
Keyword(s):  
Solid State ◽  
Lewis Acids ◽  
Coordination Mode ◽  
Systematic Investigation ◽  
Ligand Complex ◽  
One Dimensional ◽  
Multinuclear Nmr ◽  
Dynamic Coordination ◽  
Coordination Behavior ◽  
The One

Abstract A systematic investigation of the coordination behavior of Pn complexes towards the main group Lewis acids Tl+ and In+ is presented. While the reaction of the tetrahedral P2 complex [{CpMo(CO)2}2(μ,η2:η2-P2)] (A1) with Tl[TEF] ([TEF] = [Al{OC(CF3)3}4]-) leads to the formation of the dicationic complex [Tl2(A1)6]2+ (1) with a central six-membered Tl2P4 ring, the analogous reaction with In[TEF] leads instead to a tetranuclear [In4(A1)8]4+ complex (3) exhibiting a weak InI-InI interaction in the solid state. When the Cp*-analogous P2 complex [{Cp*Mo(CO)2}2(μ,η2:η2-P2)] (A2) is reacted with Tl[TEF] the dinuclear complex [Tl2(A2)4]2+ (2) is formed, containing only four P2 ligands but also featuring a six-membered Tl2P4 ring motif. From the reactions of the cyclo-P3 complexes [CpM'(CO)2(η3-P3)] (M' = Cr (B1), Mo (B2)) with In[TEF] and Tl[TEF], a series of four isostructural one-dimensional coordination polymers (4a-d) are obtained which exhibit a novel bridging coordination mode of the cyclo-P3 ligands in the solid state. Additionally, the mixed PmSn ligand complex [(Cp*Mo)2(μ,η3:η3-P3)(μ,η2:η2-PS)] (C) was reacted with Tl[TEF] to afford a novel one-dimensional coordination polymer (5), which shows an unprecedented bridging s-1,3-coordination mode of ligand C towards Tl+. The compounds were analyzed by single-crystal X-ray structure determination, elemental analysis, and mass spectrometry, as well as by multinuclear NMR and IR spectroscopy. All products are readily soluble in CH2Cl2, despite in many cases being polymeric in the solid state. Multinuclear NMR spectroscopy suggests a highly dynamic coordination behavior in solution, including fast equilibria between different monomeric species, which is also supported by DFT calculations. The one-dimensional polymers 4c and 4d reveal a triplet in the 31P{1H} MAS NMR spectrum at room temperature, which could be explained by fast rotation of the P3 rings in the solid state.

Immobilization of tungsten disulfide nanosheets on active carbon fibers as electrode materials for high performance quasi-solid-state asymmetric supercapacitors

2018 ◽  
Vol 6 (17) ◽  
pp. 7835-7841 ◽  
Author(s):  
Xiaoming Qiu ◽  
Luning Wang ◽  
Li-Zhen Fan
Keyword(s):  
Solid State ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Active Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Tungsten Disulfide ◽  
Asymmetric Supercapacitors ◽  
One Dimensional ◽  
The One

A novel tungsten disulfide/active carbon fiber (WS2/ACF) nanocomposite was synthesized through electrospinning and a subsequent hydrothermal method, with the WS2 nanosheets homogeneously decorated on the surface of the one-dimensional active carbon fiber.

scholarly journals Формирование регулярных слоистых структур при твердотельных фазовых переходах с изменением концентрации

2020 ◽  
Vol 62 (8) ◽  
pp. 1244
Author(s):  
А.А. Чеврычкина ◽  
Н.М. Бессонов ◽  
А.Л. Корженевский
Keyword(s):  
Phase Transition ◽  
Solid State ◽  
Temperature Gradient ◽  
Capillary Wave ◽  
Wave Model ◽  
The Self ◽  
One Dimensional ◽  
The One

The self-oscillation dynamic of an interface is calculated in the framework of the one-dimensional capillary-wave model. The parameters of a periodic layered impurity microstructure are obtained. This microstructure arises as a result of a solid-state phase transition with a change in concentration that occurs when a moving temperature gradient is applied.

scholarly journals INTERACTIONS IN QUASICRYSTALS

2001 ◽  
Vol 15 (10n11) ◽  
pp. 1329-1337 ◽  
Author(s):  
JULIEN VIDAL ◽  
DOMINIQUE MOUHANNA ◽  
THIERRY GIAMARCHI
Keyword(s):  
Solid State ◽  
Transport Properties ◽  
Fermi Liquid ◽  
Electron Gas ◽  
Three Dimensional ◽  
Luttinger Liquid ◽  
Dimensional Model ◽  
One Dimensional ◽  
Interacting Electrons ◽  
The One

Although the effects of interactions in solid state systems still remains a widely open subject, some limiting cases such as the three dimensional Fermi liquid or the one-dimensional Luttinger liquid are by now well understood when one is dealing with interacting electrons in periodic crystalline structures. This problem is much more fascinating when periodicity is lacking as it is the case in quasicrystalline structures. Here, we discuss the influence of the interactions in quasicrystals and show, on a controlled one-dimensional model, that they lead to anomalous transport properties, intermediate between those of an interacting electron gas in a periodic and in a disordered potential.

scholarly journals Topological dislocation modes in three-dimensional acoustic topological insulators

2021 ◽  
Author(s):  
Chunyin Qiu ◽  
Liping Ye ◽  
Meng Xiao ◽  
Tianzi Li ◽  
Juan Du ◽  
...  
Keyword(s):  
Solid State ◽  
Three Dimensional ◽  
Real Space ◽  
One Dimensional ◽  
Boundary Correspondence ◽  
Classical Wave ◽  
Topological States ◽  
Line Defects ◽  
The One ◽  
Dislocation Path

Abstract Dislocations are ubiquitous in three-dimensional solid-state materials. The interplay of such real space topology with the emergent band topology defined in reciprocal space gives rise to gapless helical modes bound to the line defects. This is known as bulk-dislocation correspondence, in contrast to the conventional bulk-boundary correspondence featuring topological states at boundaries. However, to date rare compelling experimental evidences have been presented for this intriguing topological observable in solid-state systems, owing to the huge challenges in creating controllable dislocations and conclusively identifying topological signals. Here, using a three-dimensional acoustic topological insulator with precisely controllable dislocations, we report an unambiguous experimental evidence for the long-desired bulk-dislocation correspondence, through directly measuring the gapless dispersion of the one-dimensional topological dislocation modes. Remarkably, as revealed in our further experiments, the pseudospin-locked dislocation modes can be unidirectionally guided in an arbitrarily-shaped dislocation path. The peculiar topological dislocation transport, expected in a variety of classical wave systems, can provide unprecedented control over wave propagations.

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