Notizen: Die Kristallstruktur von [(CH3)4N]FeF4 · H2O mit einem di(µ-fluoro)-verbrückten [Fe2F8(H2O)2]2–-Anion / Crystal Structure of [(CH3)4N]FeF4 · H2O with a Di(μ-fluoro)-Bridged [Fe2F8(H2O)2]2- Anion

1991 ◽  
Vol 46 (3) ◽  
pp. 395-399 ◽  
Author(s):  
Ursula Bentrup ◽  
Werner Massa
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Dimeric Unit ◽  
Fluoride Ligands

Single crystals of [(CH3)4N]FeF4·H2O have been prepared from aqueous HF solution. The crystal structure was determined by X-ray diffraction: space group P1̄, Z = 2 (or 1 dimeric unit), a = 705.7(5), b = 818.5(8), c = 915.2(12) pm, α = 65.46(10)°, β = 82.90(9)°, γ = 72.76(7)°, R/wR = 0.047/0.021. The structure consists of centrosymmetrical dimeric anions [Fe2F8(H2O)2]2- with fluorine double bridges and is isotypic with [(CH3)4N]VOF3 · H2O. Intramolecular H-bonds are found between the axial water and fluoride ligands. By additional strong intermolecular H-bonds (O ··· F 258 pm) the anions are connected to form infinite parallel chains between which the TMA cations are located. [(CH3)4N]AlF4 · H2O is shown to be isotypic.

Filling up another Gap: Synthesis and Crystal Structure of Ba2H3I

2011 ◽  
Vol 66 (11) ◽  
pp. 1087-1091 ◽  
Author(s):  
Olaf Reckeweg ◽  
Francis J. DiSalvo
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Single Crystals ◽  
Title Compound ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Bond Lengths

Colorless and transparent single crystals of Ba2H3I were obtained by reacting Ba with dried and sublimed NH4I in a 4 : 1 molar ratio in silica-jacketed Nb ampoules at 1100 K for 13 h. The crystal structure of the title compound was determined and refined by means of single-crystal X-ray diffraction. Ba2H3I crystallizes in a stuffed anti-CdI2 structure isotypic to Sr2H3I in the space group P3̄m1 (no. 164) with the lattice parameters a = 451.86(12) and c = 811.84(23) pm. The structural results for Ba2H3I are consistent with bond lengths and coordination geometries of related binary and ternary hydrides

Notizen: Zur Kristallstruktur von SrPbO3 / The Crystal Structure of SrPbO3

1975 ◽  
Vol 30 (3-4) ◽  
pp. 277-278 ◽  
Author(s):  
Hans-L. Keller ◽  
Karl-H. Meier ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Single Crystal ◽  
Single Crystals ◽  
Diffraction Data ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Pressure Synthesis ◽  
Group D

Single crystals of SrPbO3 could be prepared by oxygen-high-pressure-synthesis (PO2 > 3500 at, t = 450°C). Single crystal X-ray diffraction data confirm the space group D2h16-Pnma. SrPbO3 belongs to the orthorhombic distorted Perowskit type with a = 5.964, b = 8.320, c = 5.860 Å. The atomic positions were refined.

Low-Temperature Structure and Magnetic Properties of Tetraphenylarsonium Tetrachloronitridotechnetate(VI)

1996 ◽  
Vol 49 (5) ◽  
pp. 633 ◽  
Author(s):  
BN Figgis ◽  
PA Reynolds ◽  
FK Larsen ◽  
GA Williams ◽  
CD Delfs
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Low Temperature ◽  
Neutron Diffraction ◽  
Single Crystals ◽  
Temperature Structure ◽  
X Ray Diffraction ◽  
Magnetic Susceptibilities ◽  
Space Group ◽  
X Ray

The crystal structure of [As(C6H5)4] [TcNCl4] was determined at 120 K by X-ray diffraction and at 28 K by neutron diffraction. The crystals are tetragonal, space group P4/n, with a 1260.4(3) and c 773.2(2) pm at 120 K. The [TcNCl4]-anion possesses exact C4v symmetry, with Tc≡N distances of 160.3(2) and 162.5(4)pm at 120 and 28 K respectively. Magnetic susceptibilities were measured on single crystals from 300 to 4.5 K. The results indicate a well behaved S ½ system following the Curie-Weiss law with θ -0.13 K

Notizen: Die Kristallstruktur von KLiTe / The Crystal Structure of KLiTe

1993 ◽  
Vol 48 (12) ◽  
pp. 1835-1836 ◽  
Author(s):  
Horst Sabrowsky ◽  
Rolf-Dieter Hitzbleck ◽  
Petra Vogt
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
Fourier Methods ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters

The crystal structure of KLiTe described earlier as a dark grey powder compound has been determined by X-ray diffraction of single crystals. Very hygroscopic KLiTe crystallizes in the tetragonal space group P4/nmm (Z = 2) with the cell parameters a = 483.0(1) and c = 770.4(2) pm. The structure was determined from 211 independent reflections by Patterson and Fourier methods (R = 0.013; wR = 0.013).

Notizen: Notiz zur Kristallstruktur von APb2Cl5-Verbindungen / Notice about Crystal Structures of APb2Cl5-Compounds

1976 ◽  
Vol 31 (6) ◽  
pp. 885 ◽  
Author(s):  
H.-L. Keller.
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Crystal Structures ◽  
Diffraction Data ◽  
Structure Determination ◽  
Crystal Structure Determination ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray

Single crystals of TlPb2Cl5 and NH4Pb2Cl5 were prepared. X-ray diffraction data confirm the space group C2h5—P21/c (No. 14). Crystal structure determination shows a new typ, belonging to the PbCl2-structure.

Kristallstruktur von RbNaO / Crystal Structure of RbNaO

1985 ◽  
Vol 40 (12) ◽  
pp. 1761-1762 ◽  
Author(s):  
Horst Sabrowsky ◽  
Petra Vogt-Mertens ◽  
Alfred Thimm
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters ◽  
Ordered Pairs

Abstract The colourless compound RbNaO has been prepared as described earlier [1 ], but single crystals were not yet available at that time. N ow its crystal structure was determined by X-ray diffraction techniques. The very hygroscopic RbNaO crystallizes in the tetragonal space group P4/nmm (Z = 2) with the cell parameters a - 406.8(1), c = 649.4(1) pm. The structure was solved from 1031 counter reflections (375 symmetry independent reflections) by using differential Fourier syntheses. Refining gives a least squares residue o f 0.086. The structure forms an am/-PbFCl-type geom etry with c-centered squares of sodium interspersed by antiparallel ordered pairs of R b-O

Synthese und Kristallstruktur der ersten zinkhaltigen Pyroborate Ni1,5Zn0,5(B2O5) und Co1,5Zn0,5(B2O5) / Synthesis and Crystal Structure of the First Zinc Containing Pyroborates Ni1,5Zn0,5(B2O5) and Co1,5Zn0,5(B2O5)

1995 ◽  
Vol 50 (10) ◽  
pp. 1445-1449 ◽  
Author(s):  
Silke Busche ◽  
Karsten Bluhm
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Oxygen Coordination ◽  
Octahedral Oxygen ◽  
Symmetry Space ◽  
Symmetry Space Group

The first zinc containing pyroborates Ni1,5Zn0,5(B2O5) (A ) and Co1,5Zn0,5(B2O5) (B) were prepared by using a B2O3 flux technique. Single crystals were investigated by X-ray diffraction and showed triclinic symmetry, space group Ci1-P1̅. The structures are isotypic to Co2(B2O5) with the lattice parameters (A ) a = 331.28(6), b = 613.87(11), c = 922.2(2), α = 104.067(11) °, β = 90.672(13) °, γ = 92.413(12) ° and (B) a = 315.89(2), b = 612.84(6), c = 927.72(6), α = 104.103(7) °, β = 91.020(6) °, γ = 92.540(7) °, Z = 2. All metal point positions show an octahedral oxygen coordination and a partly statistical distribution of Zn2+ and Ni2+ or Co2+, respectively. Isolated nearly planar B2O5 units connect ribbons consisting of edge sharing metal octahedra.

Synthese und Röntgenstrukturanalyse von Ba4LiCuO4(CO3)2 / Synthesis and X-Ray Analysis of Ba4LiCuO4(CO3)2

1995 ◽  
Vol 50 (1) ◽  
pp. 56-60 ◽  
Author(s):  
G. Tams ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
Laser Technique ◽  
Space Group ◽  
X Ray ◽  
Square Planar ◽  
Group D ◽  
Related Compounds

Single crystals of Ba4LiCuO4(CO3)2 have been prepared by CO2—LASER technique and investigated by single crystal X-ray diffraction. The compound crystallizes in the tetragonal space group D112d—I4̄2m (No. 121), a = 5.767(1), c = 15.2614(7) Å, Z = 2. It is isotypic with Ba4NaCuO4(CO3)2 and shows Li+ with octahedral and Cu3+ with square planar coordination by O2-. The crystal structure are discussed with respect to the related compounds Ba4NaAuO4(O2)2 and Ba4KAuO4(C2)2.

Die Kristallstruktur von CsNaTe / The Crystal Structure o f CsNaTe

1996 ◽  
Vol 51 (11) ◽  
pp. 1576-1578 ◽  
Author(s):  
Karsten Fischer ◽  
Elisabeth Feldbaum -Möller ◽  
Petra Vogt ◽  
Michael Wachhold ◽  
Volker Winter ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
X Ray Diffraction ◽  
Fourier Methods ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters

The crystal structure of CsNaTe has been determined by X-ray diffraction of single crystals. The hygroscopic CsNaTe crystallizes in the tetragonal space group P4/nmm (Z = 2) with the cell parameters a = 527.6(1) and c = 847.8(2) pm. The structure was determined from 237 independent reflections by Patterson and Fourier methods (R1 = 0.065; wR2 = 0.080).

Synthese und Kristallstruktur von NiHo2(B2O5)2, das erste Nickellanthanoidborat mit einem 2∞(B2O5)4- -Anion / Synthesis and Crystal Structure of NiHo2(B2O5)2, the First Nickel Lanthanoid Borates with a (B2O5)4- Anion

1996 ◽  
Vol 51 (5) ◽  
pp. 677-680 ◽  
Author(s):  
Karsten Bluhm ◽  
André Wiesch
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Single Crystals ◽  
Oxygen Octahedra ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
High Temperature Reactions

Single crystals of NiHo2(B2O5)2 were prepared by a B2O3 flux-technique in high temperature reactions at 1450 °C and investigated by X-ray diffraction. They crystallize in the space group C2h5-P21/c (Nr. 14) with a = 451.0(4); b = 724.8(3); c = 938.8(6) pm; β = 91,39( 1)°; Z = 2. The compound is isotypic to CuTb2 (B2O5)2 as well as to the gadolinite structure (FeY2(BeSiO5)2) and contains a two dimensional infinite anion with the formula 2∞ (B2O5)4-. The borate layers consist of four- and eight-membered rings of edge-sharing BO4 tetrahedra. The layers are connected via copper-centered elongated oxygen-octahedra and slightly distorted tetragonal HoO8 antiprisms.

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