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Single crystals of Na2.77K1.52Fe2.57(AsO4)4 are prepared by solid state reaction of a 1:1:1:5 molar mixture of Na2CO3, K2CO3, Fe(NO3)3, and NH4H2AsO4 (Pt crucible, 1. 400 °C, 1 d, 2. 850 °C, 3 d; 20 K/h cooling rate). The compound crystallizes in orthorhombic space group Cmce with Z = 4 (single crystal XRD). The structure consists of FeO6 octahedra and AsO4 tetrahedra sharing corners and edges to form a two-dimensional framework. The interlayer space is occupied by K+ while Na+ is located in cavities of the anionic framework. Impedance spectroscopic data reveal a conductivity of 7.22 x 10-6 S/cm at 298 °C and an activation energy of 0.50 eV. The bond valence sum model is extended to simulate the ionic migration pathways of alkali cations in the anionic framework. [ABSTRACT FROM AUTHOR]

LaPt5As is prepared by hot press sintering of pre-sintered (500 °C, 10 h) stoichiometric mixtures of the elements (Kawai-type apparatus, 1000 °C, 4-15 GPa, 1 h). [ABSTRACT FROM AUTHOR]

Compounds (IV) and (V) are characterized by single crystal XRD and UV/VIS spectroscopy. [ABSTRACT FROM AUTHOR]

Single crystals of the new compounds Sr2Cu3As3 and Eu2Cu3As3 are prepared in a Pb flux using a 3:2:5:25 molar mixture of Sr(Eu), Cu, As, and Pb (Al2O3 crucible in evacuated silica tubes, 900 °C, 20 h; cooling to 500 °C at a rate of 3 °C/h). [ABSTRACT FROM AUTHOR]

The title material is used in a diamond-anvil cell for in situ angle dispersive synchrotron XRD up to 47.6 GPa at 25 °C to evaluate its structural stability. [ABSTRACT FROM AUTHOR]

LnCo5As3 (Ln: Y, Gd, Tb, Dy, Ho, Er) compounds are prepared by solid state reaction of stoichiometric amounts of the elements (evacuated silica tubes, 970 K, 10 d) followed by pelletizing, arc melting, and a final annealing (evacuated silica tubes, 970 K, 4 weeks). [ABSTRACT FROM AUTHOR]

Single crystals of NaCd4P3 and NaCd4As3 are prepared by short-way transport from stoichiometric amounts of the elements using CdI2 as mineralizer (evacuated silica tubes, 973 K, 4-7 d). [ABSTRACT FROM AUTHOR]

NaAg2AsS3·H2O (I) and KAg2AsS3 (II) are prepared by surfactant-thermal (solvothermal) reaction of a 2:1:0.5:2 molar mixture of NaOH (KOH), Ag, As2S3, and S in N2H4·H2O (or en for (II)) and PEG-400 (autoclave, 130 °C, 7 d, 95% and 98% yield of (I) and (II), resp.). [ABSTRACT FROM AUTHOR]

Single crystals of SrAg4As2S6·2H2O (I) and BaAgAsS3 (II) are grown by hydrazine-hydrothermal reaction of a 3:1:0.5:4 molar mixture of Sr(OH)2 or Ba(OH)2, Ag, As2S3, and S in N2H4·H2O (autoclave, 160 °C, 7 d, 40% and 50% yield, resp.). [ABSTRACT FROM AUTHOR]

The title compound is prepared by reaction of the elements in the ratio Pb:(P,As) = 1:1 and P:As ratios between 3:7 and 1:1 (evacuated quartz tubes, multistep heating at 423, 573, and 673 K, 48 h each) followed by the removal of the Pb flux. [ABSTRACT FROM AUTHOR]

The new title compound is prepared by solid state reaction of stoichiometric amounts of Na, Ge, and As (Al2O3 crucible in evacuated silica tubes, 650 °C, 10 d). [ABSTRACT FROM AUTHOR]

MM′As2O7 (M: Sr, Ba; M′: Cd, Hg) are prepared by hydrothermal reaction of As2O5, SrCO3 or Ba(OH)2, and HgO or CdO (autoclave, 190 or 220 °C °C, 4-5 d). [ABSTRACT FROM AUTHOR]

Transparent single crystals of Ln[AsO4] (Ln: La-Nd) are obtained by the pressure-induced monazite-to-scheelite type phase transition (Walker-type multi-anvil cell, 11 GPa, 1100-1300 °C, 15 min). [ABSTRACT FROM AUTHOR]

Single crystals of Na4Ni7(AsO4)6 are prepared by annealing a stoichiometric mixture of Na2CO3, As2O3, and NiSO4·6H2O (Al2O3 boat, 1. [ABSTRACT FROM AUTHOR]

Pink single crystals of the new title compound are prepared by solid state reaction of NaNO3, Co(NO3)2, and NH4H2AsO4 in a molar ratio of 2:1:2 (porcelain boat, 350 °C for 24 h and 750 °C for 3 d). [ABSTRACT FROM AUTHOR]

Single crystals of CrAs (1 x 5 x 1 mm3 in size) are grown by chemical transport reaction of the elements using I2 as the transport agent (evacuated quartz tube in two-zone horizontal furnace, 1. [ABSTRACT FROM AUTHOR]

The title compounds are prepared from the elements (alumina crucible, 600-650 °C, 10 d). [ABSTRACT FROM AUTHOR]

GeAs and Sn-doped GeAs are prepared from the elements (1373 K, 4-5 d) and characterized by powder XRD, SEM, 119Sn Moessbauer spectroscopy, transport measurements, and TB-LMTO-ASA calculations. [ABSTRACT FROM AUTHOR]

ThFeAsN is synthesized by solid state reaction of a stoichiometric mixture of Th3N4, Th, and FeAs (evacuated quartz ampule, 1100 °C for 20 h followed by sintering at 1150 °C for 50 h). [ABSTRACT FROM AUTHOR]

CaMFe4As4 (M: K, Rb, Cs) and SrMFe4As4 (M: Rb, Cs) are prepared by solid state reaction of stoichiometric amounts of the elements (stainless steel pipe, 860-920 °C, 2-6 h). [ABSTRACT FROM AUTHOR]

Intermetallic Ln2Co12As7 (Ln: Y, Ce-Yb) and Ca2Co12As7 are prepared by solid state reaction of the elements using excess Bi as a flux (evacuated silica tubes,1223 K, 8 d). [ABSTRACT FROM AUTHOR]

Na28 [{Ni4(OH)3AsO4}4 (B-α-PW9O34)4] ·120H2O is prepared by reaction of Ni(OAc)2, ≈3 equiv. [ABSTRACT FROM AUTHOR]

Eu7Cd4Sb8-xAsx (x = 2, 3, 4, and 5) solid solutions are prepared from the elements in a molten Sn flux (alumina crucible in evacuated silica tubes, 1. [ABSTRACT FROM AUTHOR]

Single crystals of (HPyr)6 (P2Mo18O62)·4H2O (I) (Pyr: pyrrolidine) and (HPyr)6 (As2Mo18O62)·4H2O (II) are obtained from aqueous solutions containing Na2MoO4, H3PO4 or H3AsO4, and pyrrolidine (pH adjusted to 2.5-2.6 with 6N HCl, reflux, 3 h). [ABSTRACT FROM AUTHOR]

Compounds (IV) and (VII) are characterized in the solid state by single crystal XRD and FTIR spectroscopy, and in solution by UV/VIS and NMR spectroscopy and electrochemical measurements. (IV) crystallizes in the triclinic space group P... with Z = 2 and compound (VII) crystallizes in the monoclinic space group P21/n with Z = 4. The monolacunary polyanion of (IV), [(TiIVO)2(α-AsIIIW9O33)2]14-, is solution stable and is a promising monolacunary polyoxometalate host platform for functionalization by various main group and d-block metal ion guests. [ABSTRACT FROM AUTHOR]

The new compound [Cu(bipy)]2 [H2As2Mo2O14] is hydrothermally synthesized from a mixture of MoO3, CuCl2, Na3AsO4, bipy, HCl, and H2O (autoclave, pH 3.5, 160 °C, 6 d; 58% yield). [ABSTRACT FROM AUTHOR]

Review: [221 refs. [ABSTRACT FROM AUTHOR]

The title compounds are prepared from stoichiometric mixtures of the elements (silica tubes, 800 °C, 20 d) and characterized by powder and single crystal XRD, magnetic measurements, and TB-LMTO-ASA band structure calculations. [ABSTRACT FROM AUTHOR]

Sr3LiAs2H is prepared by melting and sintering of the elements and LiH in the molar ratio of Sr:LiH:Li:As = 3:1:1:2 (Ta crucible, 1. [ABSTRACT FROM AUTHOR]

Crystals of Ba2AsGaSe5 are prepared by a solid state reaction of a 4:1:1 molar mixture of BaSe, As2Se3, and Ga2Se3 (evacuated silica tubes, 900 °C, 2 d; cooling to 350 °C at a rate of 3 °C/h). [ABSTRACT FROM AUTHOR]

K0.405Bi0.865AsO4 is prepared via solid state reaction of a 3:3:4 = K:Bi:As molar mixture of K2CO3, Bi2O3, and NH4H2AsO4 (850 °C, 1 month; cooling to 25 °C at a rate of 5 K/h). [ABSTRACT FROM AUTHOR]

Single crystals of Na4Cd7(AsO3)6 are hydrothermally synthesized from aqueous mixtures of NaOH, CdO, and As2O3 in the molar ratio of 1:2:2 (autoclave, 220 °C, 52 h, 95% yield). [ABSTRACT FROM AUTHOR]

Sr14Sn3As12 and Eu14Sn3As12 are prepared by melting of the elements with excess tin as a flux (Sr(Eu):Fe:Sn:As = 8:3:20:5; alumina crucible in evacuated silica tubes, 1000 °C, 12 h). [ABSTRACT FROM AUTHOR]

The title compound is synthesized from a stoichiometric mixture of Eu, Sc, FeO, and As2O3 (alumina crucible, 1173 K for 20 h and sintering at 1373 K for 120 h). [ABSTRACT FROM AUTHOR]

Single crystals of CuMn3As2 (I) and Cu2Mn4As3 (II) are obtained from the elements in a Bi flux (Cu:Mn:As:Bi = 0.8:1.2:1:12; alumina crucible in evacuated quartz ampoule, 850 °C, 10 h). [ABSTRACT FROM AUTHOR]

Compounds (IVa-c) crystallize in the monoclinic space group C2/c with Z = 4 (single crystal XRD). [ABSTRACT FROM AUTHOR]

The electronic structure of the title family of superconductors is examined by numerical atomic orbital DFT calculations as implemented in the SIESTA code using the generalized gradient approximation to DFT and the functional of Perdew, Burke, and Ernzerhof. [ABSTRACT FROM AUTHOR]

Crystals of GaAsO4·2H2O are obtained as a minor product of the hydrothermal reaction of aqueous mixtures of VCl4, NaHAsO4, GaCl3, and guanidinium hydrochloride (autoclave, 456 K, 90 h) and characterized by high-pressure single crystal XRD and Raman spectroscopy. [ABSTRACT FROM AUTHOR]

Black AsxP1-x (x = 0, 0.25, 0,4) is prepared by vapor transport of a mixture of gray As and red P to which a Sn/SnCl4 mixture is given as mineralizer (evacuated silica tubes, complex heating and cooling schedules) and subsequently exfoliated for optical and electrochemical measurements. [ABSTRACT FROM AUTHOR]

The crystal structure of natural symplesite, Fe3(AsO4)2·8H2O is determined by high-resolution powder XRD. [ABSTRACT FROM AUTHOR]

CsCrAs2O7 is prepared by calcination of a stoichiometric mixture of Cs2CO3, Cr2O3, and NH4H2AsO4 (porcelain crucible, 1023 K, 4 d; cooling to 923 K at a rate of 5 K/d). [ABSTRACT FROM AUTHOR]

The title compound exhibits a phase transition at about 100 °C from the monoclinic space group I112 to the tetragonal space group I $\bar 4$, which is related to removal of water from the channels. [ABSTRACT FROM AUTHOR]

HgFAsF6 is prepared by oxidation of Hg2(AsF6)2 (prepared via the reaction of Hg and AsF5 in liquid SO2) with fluorine in anhydrous HF condensed on the sample at 77 K (T-shaped FEP tubes, 25 °C, 2 d). [ABSTRACT FROM AUTHOR]

The novel cluster compounds [Cu(en)2(H2O)] [Cu(en)2] 4{AsNb9V7O44 }·8H2O (I) and [Cu(en)2(H2O)] [Cu(en)2] 4H{AsNb8V8O44 }·11H2O (II) are prepared in 41 and 38% yield, resp., by solvothermal reaction of K7HNb6O19, Cu(OAc)2, Na2VO3, As2O3, and en under nearly identical conditions (HCl, H2O, autoclave, 160 °C, 5 d) except for the pH value which should be in the range 10.3-10.6 for (I) and 10.7-11.0 for (II). [ABSTRACT FROM AUTHOR]

Pb(SbF6)2 and Ba(SbF6)2 and PbFSbF6 are prepared by reaction of the corresponding metal difluorides, SbF3, anhydrous HF, and excess elemental F2 (fluoroethylene-hexafluoropropylene reaction vessels, 25 °C). [ABSTRACT FROM AUTHOR]

Hg5AsS2I3 is prepared by solid-state reaction of a 3:1:1 molar mixture of Hg2I2, As, and S (pressed pellet, evacuated glass tube; 1. [ABSTRACT FROM AUTHOR]

The new Zintl phases of title are synthesized by reactions of the elements in molten Pb (A:Zn:Pn:Pb = 21:4:18:100; alumina crucibles, 1273 K, 24 h). [ABSTRACT FROM AUTHOR]

Li1-xSn2+xAs2 (0.2 < x < 0.4) phases are prepared by stoichiometric solid state reaction of the elements (evacuated silica tubes, 973 K, 2 h; cooling to 423 K over 30 h). [ABSTRACT FROM AUTHOR]

Polycrystalline Li3AsW7O25 is obtained by solid-state reaction of LiNO3, WO3, and As2O5 in the molar ratio of 6:14:1, resp. [ABSTRACT FROM AUTHOR]

The open Wells—Dawson type compound [C(NH2)3]5Na4 [{Ni(H2O)4}2{Na(H2O)} As2W19O67(H2O)] 9‐·22 H2O is obtained from an aqueous mixture of NiCl2, Py‐2,6‐CO2H (80 °C, 1 h), and trilacunary Na9[α‐AsW9O33] which is added prior to guanidinium chloride at pH 5.8 as the structure directing cation (2‐3 weeks, 46% yield). [ABSTRACT FROM AUTHOR]