Complex formation between antimony trifluoride and alkali-metal sulphates: the X-ray crystal structure of K2SO4·SbF3and antimony-121 Mössbauer studies of some related compounds

1982 ◽  
pp. 2313-2316 ◽  
Author(s):  
Thomas Birchall ◽  
Bernard Ducourant ◽  
Robert Fourcade ◽  
Guy Mascherpa
Keyword(s):  
Crystal Structure ◽  
Complex Formation ◽  
Alkali Metal ◽  
Mössbauer Studies ◽  
X Ray ◽  
Antimony Trifluoride ◽  
Metal Sulphates ◽  
Related Compounds

scholarly journals Crystal Chemical Relations in the Shchurovskyite Family: Synthesis and Crystal Structures of K2Cu[Cu3O]2(PO4)4 and K2.35Cu0.825[Cu3O]2(PO4)4

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 807
Author(s):  
Ilya V. Kornyakov ◽  
Sergey V. Krivovichev
Keyword(s):  
Crystal Structure ◽  
Crystal Structures ◽  
Structural Complexity ◽  
Crystal Chemical ◽  
X Ray Diffraction ◽  
Complexity Measures ◽  
X Ray ◽  
The Family ◽  
Similarities And Differences ◽  
Related Compounds

Single crystals of two novel shchurovskyite-related compounds, K2Cu[Cu3O]2(PO4)4 (1) and K2.35Cu0.825[Cu3O]2(PO4)4 (2), were synthesized by crystallization from gaseous phase and structurally characterized using single-crystal X-ray diffraction analysis. The crystal structures of both compounds are based upon similar Cu-based layers, formed by rods of the [O2Cu6] dimers of oxocentered (OCu4) tetrahedra. The topologies of the layers show both similarities and differences from the shchurovskyite-type layers. The layers are connected in different fashions via additional Cu atoms located in the interlayer, in contrast to shchurovskyite, where the layers are linked by Ca2+ cations. The structures of the shchurovskyite family are characterized using information-based structural complexity measures, which demonstrate that the crystal structure of 1 is the simplest one, whereas that of 2 is the most complex in the family.

The oxygen exchange from O2/C18O2 with surfaces of vanadium pentoxide and alkali metal-promoted vanadium pentoxide catalysts

1978 ◽  
Vol 56 (24) ◽  
pp. 3078-3083 ◽  
Author(s):  
David Victor Fikis ◽  
Keith Walter Heckley ◽  
William John Murphy ◽  
Robert Anderson Ross
Keyword(s):  
Alkali Metal ◽  
Vanadium Pentoxide ◽  
Concentration Level ◽  
Oxygen Exchange ◽  
Circulation System ◽  
X Ray Diffraction ◽  
X Ray ◽  
Oxygen Exchange Reaction ◽  
Metal Sulphates ◽  
Activity Series

The oxygen exchange reaction between O2/C18O2 and the surfaces of vanadium pentoxide and promoted vanadium pentoxide catalysts has been studied in a circulation system using a quartz differential reactor. Isotopic compositions were analysed with an in-line mass spectrometer. Alkali metal sulphates, Li to Cs, were added to the pentoxide as individual promoters at a concentration level of 9 mol % and the effect of variation of promoter concentration was examined with melts containing potassium sulphate at additional levels of 1, 2, and 5 mol%. The structures of the solids were studied by X-ray diffraction and by ATR and transmission infrared spectroscopy. The latter results have been used to explain the two activity series for the exchange rates: (i)V2O5 < Na < Li < K < Rb < Cs (melts) and (ii) V2O5 < 1 mol% < 2 mol% < 5 mol% < 9 mol% (K), in terms of additive effects on the relative abundance and strength of identified vanadium/oxygen linkages in the surfaces of the catalysts.

A Novel Alkali-Metal Hydrido-tris(pyrazolyl)borate (Tp*) Complex. Isolation and Crystal Structure of [(Me2CO)3(NaTp*)2]

2014 ◽  
Vol 69 (7) ◽  
pp. 793-798
Author(s):  
Laurent Plasseraud ◽  
Hélène Cattey
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
Sodium Hydroxide ◽  
Title Compound ◽  
Room Temperature ◽  
Crystallographic Analysis ◽  
Monoclinic Space Group ◽  
Large Excess ◽  
X Ray ◽  
Acetone Water

The title compound was isolated from the treatment of Tp*Sn(Cl)2Bu (1) with a large excess of sodium hydroxide in a mixture of acetone-water at room temperature. [(Me2CO)3(NaTp*)2] (2) crystallizes at 4 °C as prismatic colorless crystals, in the monoclinic space group P21/c with Z = 4, a = 12.2837(6), b = 24.3197(12), c = 16.9547(8) Å, β = 110.017(1)°, and V = 4759.0(4) Å3. The X-ray crystallographic analysis revealed a dinuclear unit in which two Tp*Na moieties are held together by three bridging acetone molecules acting as oxygen-based donors.

(Tnmethylphosphine)(triphenylsilyl)gold(I) and Related Compounds

1999 ◽  
Vol 54 (1) ◽  
pp. 26-29 ◽  
Author(s):  
Miguel Monge Oroz ◽  
Annette Schier ◽  
Hubert Schmidbaur
Keyword(s):  
Crystal Structure ◽  
Crystal Lattice ◽  
Coordination Compounds ◽  
Ionic Species ◽  
X Ray Diffraction ◽  
X Ray ◽  
Halide Complexes ◽  
Related Compounds ◽  
Heteroleptic Complex

Mononuclear coordination compounds of the type (R3P)AuSiR′3 with R = R’ = Ph and R = Me, R′ = Ph have been obtained from reactions of the corresponding halide complexes (R3P)AuCl with the silyllithium reagent LiSiPh3. The fully phenylated species undergoes ligand redistribution in solution to give homoleptic ionic species. (Me3P)AuSiPh3 is less susceptible to this process and crystallizes from solutions as the heteroleptic complex. The crystal structure of this compound has been determined by X-ray diffraction. In the crystal lattice the molecules are not associated.

Saturnene Revealed: X-ray Crystal Structure of D5d-C60F20 Formed in Reactions of C60 with AxMFy Fluorinating Agents (A=Alkali Metal; M=3d Metal)

2009 ◽  
Vol 122 (4) ◽  
pp. 824-827 ◽  
Author(s):  
Natalia B. Shustova ◽  
Zoran Mazej ◽  
Yu-Sheng Chen ◽  
Alexey A. Popov ◽  
Steven H. Strauss ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document