ChemInform Abstract: Alkali Metal Formates. Part 5. The Crystal Structure of Sodium Formate Dihydrate, NaHCO2×2 H2O.

ChemInform ◽  
2010 ◽  
Vol 26 (2) ◽  
pp. no-no
Author(s):  
K. MUELLER ◽  
K.-J. RANGE ◽  
A. M. HEYNS
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
Sodium Formate ◽  
Metal Formates

Alkalimetallformiate, V Die Kristallstruktur von Natriumformiat-Dihydrat, NaHCO2·2H2O [1] Alkali Metal Formates, V The Crystal Structure of Sodium Formate Dihydrate, NaHCO2·2H2O [1]

1994 ◽  
Vol 49 (9) ◽  
pp. 1179-1182 ◽  
Author(s):  
Kerstin Müller ◽  
Klaus-Jürgen Range ◽  
Anton M. Heyns
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
Sodium Formate ◽  
Sodium Ions ◽  
Hydrogen Atoms ◽  
Orthorhombic Space Group ◽  
Bonding System ◽  
Water Oxygen ◽  
Metal Formates ◽  
Oxygen Atoms

Single crystals of sodium formate dihydrate, NaHCO2·2H2O, have been prepared from aqueous solutions of sodium formate, NaHCO2, via the trihydrate, NaHCO2-3H2O. They are orthorhombic, space group Cmca, with a = 7.070(4), b = 14.534(2), c = 8.706(2) Å and Z = 8. The structure, including the hydrogen atoms, was refined to R = 0.054, Rw = 0.065 for 479 unique reflections with I > 3 σ (I). It comprises buckled layers formed by NaO6 octahedra which are edge- and corner-sharing. The octahedral coordination of the sodium ions is achieved by two oxygen atoms from two different end-on bonded formate ions and four water oxygen atoms. The O···H distances show clearly that strong hydrogen bonds are not involved in the bonding system

Alkalimetallformiate, VI. Die Kristallstruktur von Rubidiumhydrogendiformiat, RbH(HCO2)2 [1] / Alkali Metal Formates, VI. The Crystal Structure of Rubidium Hydrogen Diformate, RbH(HCO2)2 [1]

1994 ◽  
Vol 49 (8) ◽  
pp. 1123-1126
Author(s):  
Kerstin Müllera ◽  
Klaus-Jürgen Range ◽  
Anton M. Heyns
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
Formic Acid ◽  
Single Crystals ◽  
Title Compound ◽  
Room Temperature ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
Metal Formates ◽  
Potassium Compound

Single crystals of the title compound have been obtained by neutralization of formic acid with solid rubidium carbonate and subsequent solvent evaporation at room temperature. The very hygroscopic crystals are orthorhombic, space group Pbca (Nr. 61), with a = 7.614(1), b = 17.926(2), c = 7.862(1) Å and Z = 8. The structure, which has been refined to R = 0.072 and Rw = 0.067 for 1008 unique reflections, is isotypic with that of the analogous potassium compound. It comprises layers of edge-sharing distorted RbO8 square antiprisms, sandwiched between two adjacent formate layers. The sandwiches are hold together by O···H···O inter­actions, which are, however, rather weak.

scholarly journals Spotlight on Alkali Metals: The Structural Chemistry of Alkali Metal Thallides

Crystals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1013
Author(s):  
Stefanie Gärtner
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
Crystal Structures ◽  
Alkali Metals ◽  
Valence Electron ◽  
Oxidation States ◽  
Valence Electron Concentration ◽  
Base Metals ◽  
Charge Balancing

Alkali metal thallides go back to the investigative works of Eduard Zintl about base metals in negative oxidation states. In 1932, he described the crystal structure of NaTl as the first representative for this class of compounds. Since then, a bunch of versatile crystal structures has been reported for thallium as electronegative element in intermetallic solid state compounds. For combinations of thallium with alkali metals as electropositive counterparts, a broad range of different unique structure types has been observed. Interestingly, various thallium substructures at the same or very similar valence electron concentration (VEC) are obtained. This in return emphasizes that the role of the alkali metals on structure formation goes far beyond ancillary filling atoms, which are present only due to charge balancing reasons. In this review, the alkali metals are in focus and the local surroundings of the latter are discussed in terms of their crystallographic sites in the corresponding crystal structures.

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.

ChemInform Abstract: Synthesis and Crystal Structure of a New Alkali Metal Tantalum Sulfide: Na3TaS4.

ChemInform ◽  
2010 ◽  
Vol 30 (8) ◽  
pp. no-no
Author(s):  
Sabine Herzog ◽  
Christian Naether ◽  
Peter Duerichen ◽  
Wolfgang Bensch
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
Synthesis And Crystal Structure ◽  
Tantalum Sulfide

Crystal Structure of a Cyclic Polyether Complex of Alkali Metal Thiocyanate

Nature ◽  
1970 ◽  
Vol 225 (5228) ◽  
pp. 176-177 ◽  
Author(s):  
D. BRIGHT ◽  
MARY R. TRUTER
Keyword(s):  
Crystal Structure ◽  
Alkali Metal
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