Synthese und Kristallstruktur von (Cu,Zn)3,75Mo3O12 / Synthesis and Crystal Structure of (Cu,Zn)3,75Mo3O12

1995 ◽  
Vol 50 (2) ◽  
pp. 247-251 ◽  
Author(s):  
H. Szillat ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Oxygen Atom ◽  
Single Crystals ◽  
The Other ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Occupancy Factor ◽  
X Ray ◽  
Group D ◽  
Oxygen Atoms

Single crystals of (Cu,Zn)3,75Mo3O12 have been prepared by crystallization from melts and investigated by X-ray diffractometer techniques. (Cu,Zn)3,75Mo3O12 crystallizes orthorhombically, space group D24-P212121, Z = 4, a = 17.947(9), b = 5.092(3), c = 10.685(5) Å. It is isotypic to Cu3,85Mo3O12. All molybdenum atoms are tetrahedrally coordinated by oxygen atoms. There are layers of CuO6 and ZnO6 octahedra, while other metal sites are occupied by copper in a deformed prismatic coordination with one oxygen atom at a remarkably greater distance from copper than the other five. Some of the zinc atoms occupy positions in chains of face-sharing octahedra with an occupancy factor of 0.75. The crystal structure is discussed with respect to the isotypic compound Cu3,85Mo3O12 and compounds of the type CuLnMo2O8.

Zur Synthese und Kristallstruktur von Zinkboratoxiden mit isolierten, trigonal planaren BO3-Baugruppen: Zn5Mn(BO3)2O4 und ZnFe(BO3)O / Synthesis and Crystal Structure of Zinc Borate Oxides Containing Isolated Trigonal Planar BO3 Units: Zn5Mn(BO3)2O4 and ZnFe(BO3)O

1995 ◽  
Vol 50 (10) ◽  
pp. 1450-1454 ◽  
Author(s):  
Silke Busche ◽  
Karsten Bluhm
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Zinc Borate ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Octahedral Sites ◽  
Distorted Octahedral ◽  
New Compounds ◽  
Group D

Single crystals of the new compounds Zn5Mn(BO3)2O4 (A ) and ZnFe(BO3)O (B) were prepared by using a B2O3 flux technique. Zn5Mn(BO3)2O4 is isostructural with Ni5Ti(BO3)2O4 and ZnFe(BO3)O is isotypic with the mineral warwickite. X-ray investigations on single crystals led to (A ) space group D92h -Pbam, a = 926.41(10), b = 1236.67(8), c = 304.55(3) pm, Z = 2, and (B) space group D162h-Pnma, a = 924.62(4), b = 314.1(10), c = 935.3(2) pm, Z = 4. The structure of Zn5Mn(BO3)2O4 (A ) contains four octahedrally coordinated metal sites, one of these statistically occupied by Zn2+ and Mn4+. In the structure of ZnFe(BO3)O the ions Zn2+ and Fe3+ occupy statistically both distorted octahedral sites. Both structures contain isolated BO3 units and oxygen that is not coordinated to boron.

Zur Kenntnis des Oxocuprats (Cu,Co)3,75Mo3O12 / On the Oxocuprate (C u,Co)3,75Mo3O12

1995 ◽  
Vol 50 (5) ◽  
pp. 707-711 ◽  
Author(s):  
H. Szillat ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
The Other ◽  
Rectangular Prism ◽  
Orthorhombic Symmetry ◽  
Space Group ◽  
X Ray ◽  
Group D ◽  
Symmetry Space ◽  
Symmetry Space Group

Abstract Single crystals of (Cu,Co)3,75Mo3O12 have been prepared by recrystallization from melts and investigated by X-ray diffractometer techniques. The compound crystallizes with orthorhombic symmetry, space group D162h-Pnma, a = 5.092(1), b = 10.624(3), c = 17.804(4) Å, Z = 4 and is isotypic to NaCo2.31Mo3O12. The crystal structure is discussed and it is shown, that the trigonal prismatically coordinated copper positions are occupied in a different manner. One of the alternate sites is beside the centre of the prisms, and the other one is shifted towards one of the faces of the rectangular prism. This detail may be interpreted by assigning the valance states CuI and CuII. The MO6 octahedra are occupied statistically by copper and cobalt.

Zur Kenntnis von Ba2Fe22+ Fe93+Al11O34 / About Ba2Fe22+ Fe93+Al11O34

1978 ◽  
Vol 33 (2) ◽  
pp. 146-148 ◽  
Author(s):  
Hk. Müller-Buschbaum ◽  
M. Harder
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Single Crystals ◽  
Solid State Reaction ◽  
Space Group ◽  
X Ray ◽  
Lattice Constants ◽  
Data Space ◽  
Group D ◽  
O 11

Single crystals of the compound Ba2Fe11Al11O34 were prepared by solid state reaction (1700 °C) of BaO-Fe2O3-Al2O3 mixtures. The crystal structure was investigated by X-ray data (space group D46h-P63/mmc, lattice constants: a = 565.3, c = 2281.0 pm). Ba2Fe11Al11O34 is isotypic with Na2O · 11 Al2O3, the structure of β-alumina

Zur Synthese und Kristallstruktur von Dibariumkaliumtrizinkborat Ba2KZn3(B3O6)(B6O13)/Synthesis and Crystal Structure of Di-barium Potassium Tri-zinc Borate Ba2KZn3(B3O6)(B6O13)

1996 ◽  
Vol 51 (3) ◽  
pp. 319-324 ◽  
Author(s):  
Silke Busche ◽  
Karsten Bluhm
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Structure Type ◽  
Lattice Parameters ◽  
Zinc Borate ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Unknown Structure

Abstract Single crystals of the new compound Ba2KZn3(B3O6)(B6O13) were obtained by using a B2O3 flux technique; they crystallize in an as yet unknown structure type. X-ray investigations led to the space group Ci1-P1̄ (Nr.2) with lattice parameters a = 705.2(2), b = 712.5(2), c = 1880.3(6), a = 93.43(3)°, β = 90.72(2)°, γ = 119.57(2)°, Z = 2. The structure contains (B3O6)3--rings and a new discrete (B6O13)8- anion, which is composed of two BO4 and two B2O5 units. Zn2+ is tetrahedrally coordinated by oxygen and two out of three tenfold coordinated Ba-sites are statistically occupied by Ba2+ and K+.

Über einen 9L-Perowskit der Zusammensetzung Ba9Ru3,2Mn5,8O27/ On a 9L-Perovskite of the Composition Ba9Ru3.2Mn5.8O27

1995 ◽  
Vol 50 (4) ◽  
pp. 585-588 ◽  
Author(s):  
S. Frenzen ◽  
Hk. Müller-Buschbaum
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Space Group ◽  
X Ray ◽  
Group D ◽  
Symmetry Space ◽  
Symmetry Space Group ◽  
Rhombohedral Symmetry

Single crystals of Ba9Ru3.2Mn5.8O27 have been prepared by flux techniques. X-ray four circle diffractometer measurements led to trigonal (rhombohedral) symmetry, space group D53d - R3̄̄̄m , a = 5.7043(5), c = 21.255(4) Å , Z = 1. This phase is isotypic to BaRuO3. The crystal structure and the occupation of the M3O12 triple octahedra by ruthenium and manganese are discussed with respect to other oxides containing M3O12 groups in an ordered and disordered way.

Crystal structure of Cd2V2O7

1967 ◽  
Vol 45 (20) ◽  
pp. 2297-2302 ◽  
Author(s):  
P. K. L. Au ◽  
C. Calvo
Keyword(s):  
Crystal Structure ◽  
Oxygen Atom ◽  
Lattice Parameters ◽  
The Other ◽  
Distorted Octahedron ◽  
Thermal Activity ◽  
Space Group ◽  
Bond Angles ◽  
Central Oxygen ◽  
Oxygen Atoms

Cadmium pyrovanadate crystallizes in the C2/m space group with lattice parameters a = 7.088(5) Å, b = 9.091(5) Å, c = 4.963(5) Å, β = 103°21(5)′, and z = 2. This crystal is an isostructure of the mineral thortveitite and thus the anion consists of a pair of centrosymmetrically related corner-sharing VO4 tetrahedra while the cation resides within a distorted octahedron of oxygen atoms. The anion has a linear V—O—V group, but, as with the isostructural pyrophosphates, the central oxygen atom shows an anomalously high thermal activity. The V—O bond distances are 1.76 Å for the inner bond and 1.70 Å for the terminal bond. The bond angles about the anion and cation are similar to those found for the other analogues of thortveitite.

Zur Synthese und Kristallstruktur von manganhaltigen Boratoxiden: MnFe(BO3)O und MnAl0,5Yo,5(BO3)O / Synthesis and Crystal Structure of Manganese Borate Oxides: MnFe(BO3)O and MnAl0,5Yo,5(BO3)O

1995 ◽  
Vol 50 (8) ◽  
pp. 1146-1150 ◽  
Author(s):  
Anne Utzolino ◽  
Karsten Bluhm
Keyword(s):  
Crystal Structure ◽  
Metal Ions ◽  
Single Crystals ◽  
Orthorhombic Symmetry ◽  
Monoclinic Symmetry ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Group D ◽  
Symmetry Space ◽  
Symmetry Space Group

Single crystals of the compounds MnFe(BO3)O (I) and MnAl0.5Y0.5(BO3)O (II), were obtained by a B2O3 flux technique. I crystallizes with orthorhombic symmetry, space group D162h -Pnma (Nr.62), a = 939.92; b = 319.41; c = 939.11 pm; Z = 4 and II with monoclinic symmetry, space group C52h-P21/n (Nr. 14). a = 325.6; b = 955.1; c = 929.2 pm; β = 90.70° ; Z = 4. I is isotypic to the mineral Warwickite, while II is a distorded variant of this structure. All metal ions are octahedrally coordinated. Both structures contain isolated, trigonal planar BO3 units and oxygen atoms that are not coordinated to boron.

Organoamido- and Aryloxo-lanthanoids. X. Tris(η2-3,5-di-t-butylpyrazolato)lanthanoid(III) Complexes and the X-Ray Crystal Structure of Er(η2-But2pz)3(thf)2

1994 ◽  
Vol 47 (7) ◽  
pp. 1223 ◽  
Author(s):  
JE Cosgriff ◽  
GB Deacon ◽  
BM Gatehouse ◽  
H Hemling ◽  
H Schumann
Keyword(s):  
Crystal Structure ◽  
Triphenylphosphine Oxide ◽  
The Other ◽  
Monoclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Trigonal Bipyramidal ◽  
Oxygen Atoms

The complexes Ln (But2pz)3( thf )2 ( Ln = Y, La, Pr, Nd , Sm, Gd, Dy , Er , Yb, Lu; But2pz- = 3,5-di-t-butylpyrazolate; thf = tetrahydrofuran ), and [ Ln (But2pz)3(OPPh3)2].( dme )n ( Ln = La, n = ⅔ ; Ln = Er , n = 1; dme = 1,2-dimethoxyethane) have been prepared by reaction of the lanthanoid metal with bis ( pentafluorophenyl )mercury and the corresponding pyrazole in either thf , or in dme in the presence of triphenylphosphine oxide. The X-ray crystal structure of Er (η2-But2pz)3( thf )2 [monoclinic, space group P21 (No. 4), a 9.738(4), b 19.602(4), c 11.636(4) Ǻ, β 99.42(3)°, R 0.0374 for 3667 observed reflections] shows the complex to be an eight-coordinate monomer with three chelating But2pz ligands . The arrangement of centres ( Cen ) of the N-N bonds of the But2pz ligands [< Er -N> 2.336 Ǻ; Cen-Er-Cen 140.1(4)°, 110.3(4)° and 109.6(4)°] and the thf oxygen atoms [< Er -O> 2.351 Ǻ; O- Er -O 140.1(4)°] is intermediate between trigonal bipyramidal and square pyramidal. The other Ln (But2pz)3( thf )2 complexes and Ln (But2pz)3(OPPh3)2 are considered to have similar structures.

Formamidinhim-Hexachloroferrat(III) Synthese und Kristallstruktur / Formamidinium-Hexachloroferrate(III) Synthesis and Crystal Structure

1985 ◽  
Vol 40 (3) ◽  
pp. 443-446 ◽  
Author(s):  
Udo Demant ◽  
Elke Conradi ◽  
Ulrich Müller ◽  
Kurt Dehnicke
Keyword(s):  
Crystal Structure ◽  
Diffraction Data ◽  
The Other ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
X Ray ◽  
Positional Disorder ◽  
Lattice Constants ◽  
Bond Lengths

[HC(NH2)2]3FeCl6 was obtained together with other products from the reaction of S4N4 with HCl in H2CCl2 in the presence of FeCl3. Its crystal structure was determined from X-ray diffraction data (473 independent observed reflexions, R = 0.047). Lattice constants: a = 961.6, c = 876.4 pm; tetragonal, space group P42/m, Z = 2. Of the two crystallographically independent formamidinium ions HC(NH2)2⊕, one exhibits positional disorder; the other one has C-N bond lengths of 128 pm. The FeCl63⊖ ions have symmetry C2h, but the deviation from Oh is small.

scholarly journals Synthesis and crystal structure of NaCuIn(PO4)2

2020 ◽  
Vol 76 (3) ◽  
pp. 366-369
Author(s):  
Elhassan Benhsina ◽  
Jamal Khmiyas ◽  
Said Ouaatta ◽  
Abderrazzak Assani ◽  
Mohamed Saadi ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystals ◽  
Three Dimensional ◽  
Atmospheric Conditions ◽  
Synthesis And Crystal Structure ◽  
Space Group ◽  
Sodium Cations ◽  
Oxygen Atoms

Single crystals of sodium copper(II) indium bis[phosphate(V)], NaCuIn(PO4)2, were grown from the melt under atmospheric conditions. The title phosphate crystallizes in the space group P21/n and is isotypic with KCuFe(PO4)2. In the crystal, two [CuO5] trigonal bipyramids share an edge to form a dimer [Cu2O8] that is connected to two PO4 tetrahedra. The obtained [Cu2P2O12] units are interconnected through vertices to form sheets that are sandwiched between undulating layers resulting from the junction of PO4 tetrahedra and [InO6] octahedra. The two types of layers are alternately stacked along [101] and are joined into a three-dimensional framework through vertex- and edge-sharing, leaving channels parallel to the stacking direction. The channels host the sodium cations that are surrounded by four oxygen atoms in form of a distorted disphenoid.

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