Flora of Turkey and the East Aegean Islands.

Hydrogen production, storage, transportation and key challenges with applications: A review

The Bulletin of Environmental Contamination and Toxicology provides rapid publication of peer-reviewed articles describing significant advances and discoveries in the fields of air, soil, water, and food contamination and pollution as well as articles on methodology and other disciplines concerned with the introduction, presence and effects of toxicants in the total environment.  With its high standards of scientific quality and clarity, the Bulletin provides a meeting ground for research workers who daily encounter problems related to the contamination of our environment and who welcome opportunities to share in new discoveries as soon as they are made.

Bulletin of Environmental Contamination and Toxicology

Recent advances to develop manganese-rich electrodes derived from ‘composite’ structures in which a Li2MnO3 
 (layered) component is structurally integrated with either a layered LiMO2 component or a spinel LiM2O4 component, in which M is predominantly Mn and Ni, are reviewed. The electrodes, which can be represented in two-component notation as xLi2MnO3·(1 − 
 x)LiMO2 and xLi2MnO3·(1 − 
 x)LiM2O4, are activated by lithia (Li2O) and/or lithium removal from the Li2MnO3, LiMO2 and LiM2O4 components. The electrodes provide an initial capacity >250 mAh g−1 when discharged between 5 and 2.0 V vs. Li0 and a rechargeable capacity up to 250 mAh g−1 over the same potential window. Electrochemical charge and discharge reactions are followed on compositional phase diagrams. The data bode well for the development and exploitation of high capacity electrodes for the next generation of lithium-ion batteries.

Advances in manganese-oxide âcompositeâ electrodes for lithium-ion batteries

Among the recent developments in metal-organic frameworks (MOFs), porous layered coordination polymers (CPs) have garnered attention due to their modular nature and tunable structures. These factors enable a number of properties and applications, including gas and guest sorption, storage and separation of gases and small molecules, catalysis, luminescence, sensing, magnetism, and energy storage and conversion. Among MOFs, two-dimensional (2D) compounds are also known as 2D CPs or 2D MOFs. Since the discovery of graphene in 2004, 2D materials have also been widely studied. Several 2D MOFs are suitable for exfoliation as ultrathin nanosheets similar to graphene and other 2D materials, making these layered structures useful and unique for various technological applications. Furthermore, these layered structures have fascinating topological networks and entanglements. This review provides an overview of different aspects of 2D MOF layered architectures such as topology, interpenetration, structural transformations, properties, and applications.

Two-Dimensional Metal-Organic Framework Materials: Synthesis, Structures, Properties and Applications.

The title compound, C18H20N2O3S, exists as the phenol–imine form in the crystal and there are bifurcated intra­molecular O—H⋯(N/O) hydrogen bonds present. The conformation about the C=N bond is anti (1E); the C=N imine bond length is 1.287 (4) A and the C=N—C angle is 122.5 (3)°. In the tetrahydrothienopyridine moiety, the six-membered ring has a flattened-boat conformation. In the crystal, mol­ecules are stacked nearly parallel to (110) and a weak C—H⋯π inter­action is observed. The carbonyl O atom is disordered over two positions and was refined with a fixed occupancy ratio of 0.7:0.3.

https://journals.iucr.org/e/issues/2013/07/00/su2610/su2610.pdf

Ethyl 2-[(2-hy-droxy-benzyl-idene)amino]-6-methyl-4,5,6,7-tetra-hydro-thieno[2,3-c]pyridine-3-carboxyl-ate.

In the title CoII complex, [Co(C5H3N2O4)2(H2O)4]·2H2O, the CoII ion is located on an inversion center and is coordinated by two orotate (2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carboxylate) anions and four water mol­ecules in a slightly distorted octa­hedral geometry. The dihedral angle between the carboxyl­ate group and the attached orotate ring is 1.2 (3)°. In the crystal structure, inter­molecular O—H⋯O, N—H⋯O and C—H⋯O hydrogen bonds link the mol­ecules into a three-dimensional network. π–π contacts between the orotate rings [centroid–centroid distances = 3.439 (2) and 3.438 (2) A] further stabilize the structure.

https://journals.iucr.org/e/issues/2010/06/00/xu2754/xu2754.pdf

Tetra-aqua-bis(orotato-κO)cobalt(II) dihydrate.

The title compound [Co(C7H4O2I)2(C10H14N2O)2(H2O)2] is a two-dimensional hydrogen-bonded supramolecular complex. The complex crystallizes in the triclinic space group P1 with unit-cell parameters a = 7.2964(13), b = 8.6047(17), c = 16.745(3)A, α = 93.034(15), β = 101.574(15), γ = 111.975(14)° and Z = 1. The Co(II) ion resides on a centre of symmetry, and is in an octahedral coordination environment comprising two pyridyl N atoms, two carboxylate O atoms and two O atoms from water molecules. Intermolecular C-H…O and O-H…O hydrogen bonds produce R22(16), R22(18) and R22(20) rings, which lead to one-dimensional polymeric chains. An extensive two-dimensional network of C-H…O and O-H…O hydrogen bonds, π-π and C-H…π interactions are responsible for crystal stabilization.

Synthesis and Crystal Structure of Diaquabis(4-iodinebenzoato-κO)bis-(nicotinamide-κN)cobalt(II)

For the purpose of investigating alternative adsorbents, new metal-organic compounds were synthesized, characterized and examined for their hydrogen storage capabilities. First, the compounds were synthesized and then the molecular structures of the compounds were determined experimentally by using thermal, FT-IR, solid-UV and powder-XRD analysis. Then, the crystal structures were solved using theoretical calculations. At last, the simulated maximum hydrogen storage capacities of the compounds were 3.62 and 0.64 wt. % at 77 K and 100 bars, while the numbers less than 0.1 wt. % for 1 bar and same temperature. In brief, crystal structures of inorganic compounds are determined with combined experimental and computational techniques, then, hydrogen storage abilities are investigated

https://www.hjbc.hacettepe.edu.tr/site/assets/files/1556/01_dursun-ali-kose-1.pdf

Combined Experimental and Molecular Simulation Study on The Hydrogen Storage Properties of Cu(II) and Ni(II) Metal- Organic Compounds Cu(II) Ve Ni(II) Metal-Organik Bileşiklerin Hidrojen Depolama Özellikleri Deneysel ve Moleküler Simulasyon Çalişmalari

Novel Potassium-Boron Metal-Organic Frameworks: Influence of Ligand Variation on Structural and Hydrogen Storage Properties

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