μ-Oxido-bis(pentammineisen(III))-tetrachlorid-Ammoniak(1/8), [Fe2(μ–O)(NH3)10]Cl4 · 8NH3

2011 ◽  
Vol 66 (8) ◽  
pp. 784-792
Author(s):  
Matthias B. Fichtl ◽  
Lavinia M. Scherf ◽  
Sebastian A. Baer ◽  
Florian Kraus
Keyword(s):  
Lattice Parameters ◽  
Synthesis And Characterization ◽  
Triclinic Space Group ◽  
Space Group

Here we report on the synthesis and characterization of μ-oxido-bis(pentammine iron(III))- tetrachloride-ammonia(1/8), [Fe2(μ-O)(NH3)10]Cl4 ・ 8NH3. The compound crystallizes in the triclinic space group P1̄. At 150 K the lattice parameters are a = 8.4806(7), b = 9.3823(10), c = 10.6321(12) Å , α = 112.59(1), β = 105.98(1), γ = 93.49(1)°, V = 737.51(13) Å3 with Z = 1.

Synthesis and Characterization of Bromo- and Bromochloroplumbates(II). Crystal Structures of [Ph4E]2[Pb3Br8] (E = P, As) and [Ph4P][PbBrCl2] • CH3CN

2000 ◽  
Vol 55 (5) ◽  
pp. 377-382 ◽  
Author(s):  
Thomas M. Klapötke ◽  
Burkhard Krumm ◽  
Kurt Polbom ◽  
Claudia M. Rienäcker
Keyword(s):  
Crystal Structures ◽  
Lattice Parameters ◽  
Synthesis And Characterization ◽  
Monoclinic Space Group ◽  
Triclinic Space Group ◽  
Space Group

[Ph4P]2[Pb3Br8] and [Ph4As]2[Pb3Br8] crystallize both in the monoclinic space group P 21/n. The lattice parameters of [Ph4P]2[Pb3Br8] are a = 14.637(7), b = 8.151(3), c = 23.388(8) Å, β = 106.02(3)°, Z = 2 and of [Ph4As]2[Pb3Br8] are a = 14.697(7), b = 8.219(3), c = 23.527(8) Å, β = 106.27(3)°, Z = 2. The lattice parameters of [Ph4P][PbBrCl2]·CH3CN, which crystallizes in the triclinic space group (P 1̅), are a = 9.435(3), b = 10.2577(14), c = 14.055(2) Å, α = 88.320(11)°, β = 84.82(2)°, γ = 84.19(2)°, Z = 2. 207Pb NMR shifts of halogenoplumbates in solution are reported.

Synthesis and Characterization of the Manganese Borate α-MnB2O4

2011 ◽  
Vol 66 (9) ◽  
pp. 882-888
Author(s):  
Stephanie C. Neumair ◽  
Lukas Perfler ◽  
Hubert Huppertz
Keyword(s):  
High Pressure ◽  
Three Dimensional ◽  
Lattice Parameters ◽  
Synthesis And Characterization ◽  
Manganese Ions ◽  
Space Group ◽  
Dimensional Network ◽  
Oxygen Atoms

The high-pressure manganese borate α-MnB2O4 was synthesized under high-pressure/hightemperature conditions of 6.5 GPa and 1100 ◦C in a modified Walker-type multianvil apparatus. The monoclinic compound is isotypic to α-FeB2O4, CaAl2O4-II, CaGa2O4, andβ -SrGa2O4 crystallizing with eight formula units in the space group P21/c (Z = 8) with the lattice parameters a = 712.1(2), b = 747.1(2), c = 878.8(2) pm, β = 94.1(1)◦, V = 0.466(1) nm3, R1 = 0.0326, and wR2 = 0.0652 (all data). The compound is built up from layers of “sechser” rings of corner-sharing BO4 tetrahedra that are interconnected to a three-dimensional network. The manganese ions are coordinated by seven oxygen atoms and situated in channels along the a axis.

scholarly journals Multianvil High-Pressure/High-Temperature Synthesis and Characterization of multiferroic HP-Co3TeO6

2021 ◽  
Author(s):  
Gunter Heymann ◽  
Elisabeth Selb ◽  
Toni Buttlar ◽  
Oliver Janka ◽  
Martina Tribus ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Type Structure ◽  
Synthesis And Characterization ◽  
Temperature Synthesis ◽  
Space Group ◽  
Crystal System ◽  
High Temperature Synthesis ◽  
High Pressure High Temperature

By high-pressure/high-temperature multianvil synthesis a new high-pressure (HP) phase of Co3TeO6 was obtained. The compound crystallizes in the acentric trigonal crystal system of the Ni3TeO6-type structure with space group R3...

Synthesis and characterization of a uranium oxide hydrate framework with Sr(II) ions: Structural insights and mixed uranium valences

2022 ◽  
Author(s):  
Kim Lu ◽  
Yingjie Zhang ◽  
Tao Wei ◽  
Timothy Ablott ◽  
Thanh Ha Nguyen ◽  
...  
Keyword(s):  
Uranium Oxide ◽  
Mixed Valence ◽  
Synthesis And Characterization ◽  
Monoclinic Space Group ◽  
Spectroscopic Techniques ◽  
Space Group ◽  
Oxide Hydrate ◽  
Structural Insights

A mixed-valence uranium oxide hydrate framework with Sr2+ ions (UOF-Sr2) was synthesized hydrothermally and characterized with multiple structural and spectroscopic techniques. Compound UOF-Sr2 crystallizes in monoclinic space group C2/c, having...

Struktur und Schwingungsspektrum des Kaliumundecawolframats Kg6H4W11O38· 11H2O / Structure and Vibrational Spectrum of the Potassium Undecatungstate K6H4WnO38 -11 H2O

1988 ◽  
Vol 43 (1) ◽  
pp. 89-93 ◽  
Author(s):  
Thomas Lehmann ◽  
Joachim Fuchs
Keyword(s):  
Vibrational Spectrum ◽  
Title Compound ◽  
Lattice Parameters ◽  
Triclinic Space Group ◽  
Space Group ◽  
Predominant Species

Abstract The title compound crystallizes in the triclinic space group P1̅ with lattice parameters a = 13.129 Å, b = 14.156 Å, c = 14.843 Å and α= 88.34°, β = 74.43°, γ = 70.86°. The polyanion evidently is the predominant species in pseudometatungstate phases the exact composition of which has not previously been determined.

New Thiostannates Synthesized Under Solvothermal Conditions: Crystal Structures of (trenH)2Sn3S7 and {[Mn(tren)]2Sn2S6}

2012 ◽  
Vol 67 (10) ◽  
pp. 1098-1106 ◽  
Author(s):  
Nicole Pienack ◽  
Diana Schinkel ◽  
Angela Puls ◽  
Marie-Eve Ordolff ◽  
Henning Lühmann ◽  
...  
Keyword(s):  
Band Gap ◽  
Crystal Structures ◽  
Bond Formation ◽  
Lattice Parameters ◽  
Triclinic Space Group ◽  
Space Group ◽  
Trigonal Bipyramidal ◽  
Solvothermal Conditions

The two new thiostannate compounds (trenH)2Sn3S7 (1) and {[Mn(tren)]2Sn2S6} (2) (tren=tris-2-aminoethylamine) were obtained under solvothermal conditions. Compound 1 crystallizes in the hexagonal space group P63/mmc with a=13.2642(19), c=19.078(3) Å, V =2906.9(7) Å3. The layered [Sn3S7]2- anion is constructed by Sn3S4 semi-cubes sharing common edges. The layers are characterized by large hexagonal pores with dimensions of about 11×11 Å2. Compound 2 crystallizes in the triclinic space group P1̄ with lattice parameters a=7.6485(7), b=8.1062(7), c=12.1805(11) Å, α =97.367(11), β =103.995(11), γ = 108:762(10)°, V =676.17(10) Å3. The [Sn2S6]4- anion is composed of two edge-sharing SnS4 tetrahedra and joins two Mn2+-centered complexes by Mn-S bond formation. The Mn2+ cation is in a trigonal-bipyramidal environment of four N atoms of the tren ligand and one S atom of the thiostannate anion. Both compounds are semiconductors with a band gap of 2:96 eV for 1 and of 2:75 eV for 2.

Synthesis and characterization of the lead borate Pb6B12O21(OH)6

2016 ◽  
Vol 71 (8) ◽  
pp. 925-933 ◽  
Author(s):  
Sandra Schönegger ◽  
Teresa S. Ortner ◽  
Klaus Wurst ◽  
Gunter Heymann ◽  
Hubert Huppertz
Keyword(s):  
Crystal Structure ◽  
Hydrothermal Synthesis ◽  
Potassium Nitrate ◽  
Lattice Parameters ◽  
Synthesis And Characterization ◽  
Lead Borate ◽  
Hydrothermal Conditions ◽  
Organic Reagents ◽  
Synthesis Conditions

AbstractA lead borate with the composition Pb6B12O21(OH)6 was synthesized through a hydrothermal synthesis, using lead metaborate in combination with sodium nitrate and potassium nitrate. The compound crystallizes in the trigonal, non-centrosymmetric space group P32 (no. 145) with the lattice parameters a = 1176.0(4), c = 1333.0(4) pm, and V = 0.1596(2) nm3. Interestingly, the data of Pb6B12O21(OH)6 correct the structure of a literature known lead borate with the composition “Pb6B11O18(OH)9”. For the latter compound, nearly identical lattice parameters of a = 1176.91(7) and c = 1333.62(12) pm were reported, possessing a crystal structure, in which the localization and refinement of one boron atom was obviously overlooked. The structure of Pb6B12O21(OH)6 is built up from trigonal planar BO3 and tetrahedral BO4 groups forming complex chains. The Pb2+ cations are located between neighboring polyborate chains. The here reported compound Pb6B12O21(OH)6 and “Pb6B11O18(OH)9” were, however, produced under different synthesis conditions. While “Pb6B11O18(OH)9” was synthesized via a hydrothermal synthesis including ethylenediamine and acetic acid, the here reported lead borate Pb6B12O21(OH)6 could be obtained under moderate hydrothermal conditions (240°C) without the addition of organic reagents.

Synthesis and structural characterization of donor-stabilized disubstituted diphenyldithiophosphates of nickel(II)

2014 ◽  
Vol 70 (4) ◽  
pp. 761-767 ◽  
Author(s):  
Sandeep Kumar ◽  
Ruchi Khajuria ◽  
Amanpreet Kaur Jassal ◽  
Geeta Hundal ◽  
Maninder S. Hundal ◽  
...  
Keyword(s):  
Single Crystal ◽  
Chelate Ring ◽  
Donor Ligands ◽  
Monoclinic Space Group ◽  
Bidentate Ligands ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray

Donor-stabilized addition complexes of nickel(II) with disubstituted diphenyldithiophosphates, [{(ArO)2PS2}2NiL2] {Ar = 2,4-(CH3)2C6H3[(1), (5)], 2,5-(CH3)2C6H3[(2), (6)], 3,4-(CH3)2C6H3[(3), (7)] and 3,5-(CH3)2C6H3[(4), (8)];L= C5H5N [(1)–(4)] and C7H9N [(5)–(8)]}, were successfully isolated and characterized by elemental analysis, magnetic moment, IR spectroscopy and single-crystal X-ray analysis. Compound (4) crystallizes in the monoclinic space groupP21/nwhereas compounds (7) and (8) crystallize in the triclinic space group P\bar 1. The single-crystal X-ray diffraction analysis of (4), (7) and (8) reveals a six-coordinated octahedral geometry for the NiS4N2chromophore. Two diphenyldithiophosphate ions act as bidentate ligands with their S atoms coordinated to the Ni centre. Each of them forms a four-membered chelate ring in the equatorial plane. The N atoms from two donor ligands are axially coordinated to the Ni atom.

SYNTHESIS AND CHARACTERIZATION OF La2Ca3Cu4Oy

1999 ◽  
Vol 13 (12n13) ◽  
pp. 451-453
Author(s):  
K. JEYABALAN ◽  
L. K. KALIYAPERUMAL
Keyword(s):  
Diffraction Analysis ◽  
Lattice Parameters ◽  
Synthesis And Characterization ◽  
Orthorhombic Structure ◽  
X Ray Diffraction ◽  
X Ray

Synthesis and characterization of La 2 Ca 3 Cu 4 O y compound is reported here. The powder X-ray diffraction analysis shows that the system belongs to an orthorhombic structure and the lattice parameters are a = 3.814(4)Å, b = 3.930(5)Å and c = 34.772(3)Å.

Preparation and Characterization of the New Y257 Superconductors

2013 ◽  
Vol 770 ◽  
pp. 22-25 ◽  
Author(s):  
Thitipong Kruaehong
Keyword(s):  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Critical Temperature ◽  
Solid State ◽  
Superconducting Phase ◽  
Lattice Parameters ◽  
Peritectic Temperature ◽  
Space Group ◽  
Space Groups

The new Y257 superconductor in YBaCuO family was synthesized by standard solid state reaction. The Y257 samples were measured the critical temperature (Tc) by the four-probes method that found at 90 K. The XRD technique and FULLPROF program were used to determine the lattice parameters, space group and phase compositions. It was found that the Y257 exhibited in both of superconducting and non-superconducting phase. The Pmmm space group was fit well on superconducting phase with the lattice parameters as a=3.8108 Å, b=3.8544 Å and c=26.4967 Å. The non-superconducting phase exhibited in two space groups of Pccm (a=12.9770 Å, b=20.54780 Å and c=11.3530 Å) and Im-3m (a= 18.2104 Å, b=18.2104 Å and c=18.2104 Å). The peritectic temperature at 976.73°C was measured by differential thermal analysis.

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