Mechanochemical Synthesis and Structure of the Alkali Metal Magnesium Chalcogenide NaMgS.

The new binary sodium magnesium sulfide was prepared by the mechanochemical synthesis route from NaS and MgS as starting materials. NaMgS is extremely sensitive and partially decomposes in the presence of oxygen traces. With the use of an excess of MgS in the milling process, the molar ratio of the impurities was successfully decreased from 38% (NaS + MgO) to 13% MgO.

Sodium Rich Vanadium Oxy-Fluorophosphate - Na Ni V (PO ) F O - as Advanced Cathode for Sodium Ion Batteries.

Conventional sodium-based layered oxide cathodes are extremely air sensitive and possess poor electrochemical performance along with safety concerns when operating at high voltage. The polyanion phosphate, Na V (PO ) stands out as an excellent candidate due to its high nominal voltage, ambient air stability, and long cycle life. The caveat is that Na V (PO ) can only exhibit reversible capacities in the range of 100 mAh g , 20% below its theoretical capacity.

Fluorescent Zn(II)-Based Metal-Organic Framework: Interaction with Organic Solvents and CO and Methane Capture.

Adsorption of carbon dioxide (CO), as well as many other kinds of small molecules, is of importance for industrial and sensing applications. Metal-organic framework (MOF)-based adsorbents are spotlighted for such applications. An essential for MOF adsorbent application is a simple and easy fabrication process, preferably from a cheap, sustainable, and environmentally friendly ligand.

Investigation of the Inorganic Compounds NaMV(PO) (M = Fe, Co, Ni) as Anode Materials for Sodium-Ion Batteries.

The new compounds NaMV(PO) (M = Fe, Co, Ni) were synthesized via a sol-gel synthesis route, and their crystal structures were refined using the Rietveld method from X-ray powder diffraction data. NaCoV(PO) was also characterized by TGA, cyclic voltammetry, and galvanostatic cycling. The three phases crystallize with the orthorhombic symmetry and the space group .

Crystal Growth, Single Crystal Structure, and Biological Activity of Thiazolo-Pyridine Dicarboxylic Acid Derivatives.

Four novel TPDCA derivatives were prepared via a supersaturation method combining TPDCA with water, -methyl-2-pyrrolidone (NMP), Na(POH), and ammonia solution: 2(CHNOS)HO (), (CHNOS)CHNO (), (CHNOS)Na(POH) (), and (CHNOS)(NH)(HO) (). Their crystal structures were determined by single-crystal X-ray diffraction. Compounds () and () crystallize in the monoclinic space groups 2 and 2/, respectively, whereas compounds () and () crystallize in the triclinic space group 1̅.

Temperature-dependent Battery Performance of a Na V (PO ) F @MWCNT Cathode and In-situ Heat Generation on Cycling.

Excellent structural stability, high operating voltage, and high capacity have made Na V (PO ) F a promising cathode material for sodium-ion batteries. However, high-temperature battery performances and heat generation measurements have not been systematically reported yet. Carbon-coated Na V (PO ) F @MWCNT (multi-walled carbon nanotube) samples are fabricated by a hydrothermal-assisted sol-gel method and the electrochemical performances are evaluated at three different temperatures (25, 45, and 55 °C).

Single crystal structure, vibrational spectroscopy, gas sorption and antimicrobial properties of a new inorganic acidic diphosphates material (NH)Mg(HPO)•2HO.

We report on the successful synthesis of diammonium magnesium dihydrogendiphosphate (V) dihydrate compound (NH)Mg(HPO)•2HO using a wet chemical route. Single crystal X-ray diffraction analysis and micro Raman spectroscopy are employed to characterize the compound. We demonstrate, using a multidisciplinary approach, that this compound is ideal for carbon dioxide (CO) capture in addition to other anthropogenic gasses.

Structural and thermal properties of NaMn(SO)·4HO and NaNi(SO)·10HO.

The title compounds were prepared a wet chemistry route and their crystal structures were determined from single crystal X-ray diffraction data. NaMn(SO)·4HO crystallizes with a monoclinic symmetry, space group 2/, with = 5.5415(2), = 8.

Crystal structure of ()-furan-2-carbaldehyde -benzoyloxime.

In the title compound, CHNO, the benzoate and furan rings are almost coplanar, making a dihedral angle of 11.68 (9)°. The twist angle between the -COO group and the benzene ring is only 2.

Synthesis, Crystal Structure, and Properties of the Alluaudite-Type Vanadates Ag2-xNaxMn2Fe(VO4)3.

The new members of the Ag2-xNaxMn2Fe(VO4)3 (0 ≤ x ≤ 2) solid solution were synthesized by a solid-state reaction route, and their crystal structures were determined from single-crystal X-ray diffraction data. The physical properties were characterized by Mössbauer and electrochemical impedance spectroscopies, galvanostatic cycling, and cyclic voltammetry. These materials crystallize with a monoclinic symmetry (space group C2/c), and the structure is considered to be a new member of the AA'MM'2(XO4)3 alluaudite family.

Structural, magnetic, and electrochemical properties of the high pressure form of Na2Co[PO4]F.

The new compound HP-Na2Co[PO4]F was synthesized by high pressure solid state reaction and its crystal structure was determined from single crystal X-ray diffraction data. The physical properties of HP-Na2Co[PO4]F were characterized by magnetic susceptibility, specific heat capacity, galvanometric cycling, and electrochemical impedance spectroscopy measurements. HP-Na2Co[PO4]F crystallizes with the space group P63/m, a = 10.

Synthesis and characterization of the crystal and magnetic structures and properties of the hydroxyfluorides Fe(OH)F and Co(OH)F.

The title compounds were synthesized by a hydrothermal route from a 1:1 molar ratio of lithium fluoride and transition-metal acetate in an excess of water. The crystal structures were determined using a combination of powder and/or single-crystal X-ray and neutron powder diffraction (NPD) measurements. The magnetic structure and properties of Co(OH)F were characterized by magnetic susceptibility and low-temperature NPD measurements.

Structural relationships among LiNaMg[PO4]F and Na2M[PO4]F (M = Mn-Ni, and Mg), and the magnetic structure of LiNaNi[PO4]F.

The new compound LiNaMg[PO4]F has been synthesized by a wet chemical reaction route. Its crystal structure was determined from single-crystal X-ray diffraction data. LiNaMg[PO4]F crystallizes with the monoclinic pseudomerohedrally twinned LiNaNi[PO4]F structure, space group P2(1)/c, a = 6.

Magnetic properties of the RbMnPO4 zeolite-ABW-type material: a frustrated zigzag spin chain.

The crystal structure and magnetic properties of the RbMnPO4 zeolite-ABW-type material have been studied by temperature-dependent neutron powder diffraction, low-temperature magnetometry, and heat capacity measurements. RbMnPO4 represents a rare example of a weak ferromagnetic polar material, containing Mn(2+) ions with TN = 4.7 K.

Synthesis and characterization of the crystal structure and magnetic properties of the hydroxyfluoride MnF(2-x)(OH)x (x ~ 0.8).

The new compound MnF(2-x)(OH)x (x ~ 0.8) was synthesized by a hydrothermal route from a 1 : 1 molar ratio of lithium fluoride and manganese acetate in an excess of water. The crystal structure was determined using the combination of single crystal X-ray and neutron powder diffraction measurements.

Single crystal growth of the novel Mn2(OH)2SO3, Mn2F(OH)SO3, and Mn5(OH)4(H2O)2[SO3]2[SO4] compounds using a hydrothermal method.

The new compounds Mn2(OH)2SO3, Mn2F(OH)SO3, and Mn5(OH)4(H2O)2[SO3]2[SO4] were synthesized using a hydrothermal route and their crystal structures were determined using single crystal X-ray diffraction data. Mn2(OH)2SO3 and Mn2F(OH)SO3 crystallized with the space group Pnma, a = 7.3580(14), b = 10.

Synthesis and characterization of the crystal structure, the magnetic and the electrochemical properties of the new fluorophosphate LiNaFe[PO4]F.

The new compound LiNaFe[PO(4)]F was synthesized by a solid state reaction route, and its crystal structure was determined using neutron powder diffraction data. LiNaFe[PO(4)]F was characterized by (57)Fe Mössbauer spectroscopy, magnetic susceptibility, specific heat capacity, and electrochemical measurements. LiNaFe[PO(4)]F crystallizes with orthorhombic symmetry, space group Pnma, with a = 10.

Synthesis and characterization of the crystal structure and magnetic properties of the new fluorophosphate LiNaCo[PO4]F.

The new compound LiNaCo[PO(4)]F was synthesized by a solid state reaction route, and its crystal structure was determined by single-crystal X-ray diffraction measurements. The magnetic properties of LiNaCo[PO(4)]F were characterized by magnetic susceptibility, specific heat, and neutron powder diffraction measurements and also by density functional calculations. LiNaCo[PO(4)]F crystallizes with orthorhombic symmetry, space group Pnma, with a = 10.

Single crystal X-ray structure study of the Li(2-x)Na(x)Ni[PO4]F system.

The new compounds Li(2-x)Na(x)Ni[PO(4)]F (x = 0.7, 1, and 2) have been synthesized by a solid state reaction route. Their crystal structures were determined from single-crystal X-ray diffraction data.

Synthesis and characterization of the crystal structure and magnetic properties of the ternary manganese vanadate NaMnVO4.

A new ternary manganese vanadate, NaMnVO(4), was synthesized by solid state reaction route, and its crystal structure and magnetic properties were characterized by X-ray diffraction, magnetic susceptibility and specific heat measurements, and by density functional calculations. NaMnVO(4) crystallizes in the maricite-type structure with space group Pnma, a = 9.563(1) A, b = 6.

Comparison of the crystal structures and magnetic properties of the low- and high-temperature forms of AgCuPO4: crystal structure determination, magnetic susceptibility measurements, and spin dimer analysis.

The crystal structure of the low-temperature form of AgCuPO4 (i.e., alpha-AgCuPO4) was determined by powder X-ray diffraction and was compared with that of the high-temperature form of AgCuPO4 (i.

Sodium calcium orthovanadate, NaCa4(VO4)3.

Single crystals of sodium tetracalcium trivanadium dodecaoxide were prepared by melting a powder sample of NaCa4(VO4)3 at 1673 K, followed by slow cooling to room temperature. The compound crystallizes in the Pnma space group and is isostructural with the mineral silicocarnotite, Ca5(PO4)2SiO4. The structure is composed of isolated VO4 tetrahedra linked by sodium and calcium cations disordered over eight- and seven-coordinated sites.

Synthesis, crystal structure, magnetic properties, and electronic structure of the new ternary vanadate CuMnVO4.

A new magnetic oxide, CuMnVO4, was prepared, and its crystal structure was determined by single-crystal X-ray diffraction. The magnetic properties of CuMnVO4 were characterized by magnetic susceptibility and specific heat measurements, and the spin exchange interactions of CuMnVO4 were analyzed on the basis of spin-polarized electronic band structure calculations. CuMnVO4 contains MnO4 chains made up of edge-sharing MnO6 octahedra containing high-spin Mn2+ cations.