Materials Literature
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Abstract A range of new families of hypervalent iodine oxidation organocatalysts is synthesized and tested for the α‐oxytosylation reaction of various ketones.
Abstract The well‐ordered NASICON‐type Mg2+ conductor (MgxHf1‐x)4/(4‐2x)Nb (PO4)3 is obtained by partial substitution of lower valent Mg2+ for Hf4+ in HfNb(PO4)3 via co‐precipitation from EtOH solutions of Mg(NO3)2, HfCl4, and NbCl5 to which (NH4)2HPO4 is given (130 °C, 1 d) followed by staged calcination in air (600—…
Abstract Lead‐free CsSnX3 (X: Br, Cl, I) and mixed halide perovskites of different compositions are obtained as thin films by coating e.g. glass substrates with stoichiometric solutions of CsX and SnX2 in DMF (70 °C, 12 h).
Abstract Review: alternative methods, a brief revision, and new strategies; 48 refs.
Abstract Pulsed laser deposition using a sintered (700 °C) mixture of Ca3(PO4)2 and CaF2 produces Ca10(PO4)6F2 films without OH groups at an O2 pressure of 10 Pa, combined with an off‐axis method.
Abstract Single crystals of the new compounds M2Ca3B16O28 (M: Rb, Cs) are grown from melts containing Rb2CO3 or Cs2CO3, CaCl2, H3BO3, and PbO in the molar ratio of 1:1:14:5 (Pt crucible, fast cooling from 700 °C to 610 °C and then cooling to 550 °C at a rate of 2.5 °C/h).
Abstract In view of a known structural phase transition at 800—875 °C and the by 10 times increased luminescence of Mn2+ in the high‐temperature phase, low‐ (LT) and high‐temperature (HT) polymorphs of CaMn0.5Zr1.5(PO4)3 are prepared by sol—gel reaction of Mn(O‐Ac)2, Ca(NO3)2, ZrOCl2, and NH4H2PO4 in ethylene glycol f…
Abstract Perfect cubic and well crystalline pure K0.5Na0.5NbO3 powders are prepared by microwave hydrothermal reaction of Nb2O5 in 6 M NaOH/KOH (1:5) solution (autoclave, 170 °C, 2 h).
Abstract The title compound (obtained by arc‐melting of the elements followed by annealing at 900 °C for 7 d) is characterized by powder XRD, magnetization, specific heat, resistivity, and thermal conductivity measurements.
Abstract Review: 73 refs.
Abstract Single phase Pd5As is prepared by heating stoichiometric amounts of the elements (evacuated silica tubes, 973 K, 4 d).
Abstract The title compounds are prepared by melting and quenching of stoichiometric amounts of Rb2CO3, SiO2, and NiO or MnO (1573 K, 1.5 h for the Ni compound; 1673 K, 2 h for the Mn compound) followed by crystallization at 1193 K (12 h).
Abstract Review: crystal chemistry, bonding peculiarities, magnetic and transport properties, 119Sn Moessbauer spectroscopic data, high‐pressure studies, hydrogenation reactions, as well as the formation of solid solutions of CeTX phases with electron‐poor and electron‐rich transition metals (T) and X: Mg, Zn, Cd, Hg,…
Abstract Single crystals of La2Re3B7 (I) and La3Re2B5 (II) are grown from mixtures containing the elements in the La:Re:B molar ratio of 1:3:5 covered by a La/Ni eutectic (compound (I)) or 1:2:1 with 1 equiv.
Abstract Crystals of the title compound are prepared from mixtures of ZnF2, SnF4, Li3N, and LiF (W capsule, 600—1000 °C, 5.5—7.7 GPa).
Abstract Transition‐metal‐doped Li8ZrO6/C composites are prepared by heating mixtures of zirconyl nitrate, the dopant metal nitrate, and Super P carbon from room temperature to 400 °C followed by cooling back to room temperature.
Abstract The formation of transition metal (M) carbides MxCy and trends of their stability are systematically investigated using the USPEX code within the DFT.
Abstract Polycrystalline (Tl1‐xScx)ScO3 (x ≈0.26) is obtained by hot press sintering of stoichiometric amounts of Sc2O3 and Tl2O3 (Au or Pt capsules in belt‐type high‐pressure apparatus, 7.7 GPa, 1673 K, 1—2 h).
Abstract Review: 94 refs.
Abstract The liquidus projection and the 400 °C isothermal section of the Pb—Sb—Se phase equilibrium are determined.