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Beryllium fluoride
IUPAC name Berylium fluoride
Identifiers
CAS number [7787-49-7]
Properties
Molecular formula BeF2
Melting point

552 °C
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

Beryllium fluoride is the chemical compound with the formula BeF2. IUPAC Nomenclature is a system of naming Chemical compounds and of describing the science of Chemistry in general CAS registry numbers are unique numerical identifiers for Chemical compounds Polymers biological sequences mixtures and Alloys They are also referred to A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes The melting point of a solid is the temperature range at which it changes state from solid to Liquid. In Chemistry, the standard state of a material is its state at 1 bar (100 Kilopascals exactly A chemical compound is a substance consisting of two or more different elements chemically bonded together in a fixed proportion by Mass. A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes It is the beryllium compound with the greatest amount of ionic character (due to the high electronegativity of fluorine), but even so it is not considered ionic by many chemists. Beryllium (bəˈrɪliəm is a Chemical element with the symbol Be and Atomic number 4 " Electronegativity " is the opposite of " Electropositivity," which describes an element's ability to donate electrons Fluorine, fluorum meaning "to flow" is the Chemical element with the symbol F and Atomic number 9 This synthetic material is the principal precursor for the manufacture of beryllium metal, which is obtained by reduction of BeF2 at 1300°C:[1]

BeF2 + Mg → Be + MgF2

Molecular BeF2, is isoelectronic with CO2 and SiO2 and as found in the gas-phase above 1160 °C is a linear molecule with a Be-F distance of 177 pm. Beryllium (bəˈrɪliəm is a Chemical element with the symbol Be and Atomic number 4 Carbon dioxide ( Chemical formula:) is a Chemical compound composed of two Oxygen Atoms covalently bonded to a single The Chemical compound silicon dioxide, also known as silica or silox (from the Latin " Silex " is an Oxide [1]. The condensed form adopts a number of different polymeric structures similar to those formed by SiO2 namely α-quartz, β-quartz, crystobalite and tridymite,[2]. The Chemical compound silicon dioxide, also known as silica or silox (from the Latin " Silex " is an Oxide The mineral cristobalite is a high-temperature polymorph of Quartz and Tridymite. Tridymite is a high-temperature polymorph of Quartz and usually occurs as minute tabular white or colorless pseudo-hexagonal Triclinic crystals or scales The difference between the ambient temperature structures of BeF2 and CO2 reflects the decreased tendency of alkali metals to form multiple bonds. An analogy exists between BeF2 and AlF3: both adopt extended structures at mild temperature.

Contents

Applications

Beryllium fluoride is used in biochemistry, particularly protein crystallography, since it binds in some of the same ways as phosphate does,,:\\]. ADP and beryllium fluoride together tend to bind to ATP sites and inhibit protein action, making it possible to crystallise proteins in the bound state. Adenosine diphosphate, abbreviated ADP, is a Nucleotide. It is an Ester of Pyrophosphoric acid with the Nucleoside Adenosine Adenosine-5'-triphosphate ( ATP) is a multifunctional Nucleotide that is most important as a " molecular currency" of intracellular Energy [3]

Safety

All beryllium compounds are highly toxic. Beryllium fluoride is very soluble in water and is thus absorbed easily; as mentioned above, it inhibits ATP uptake. Solubility is the characteristic Physical property referring to the ability of a given substance the Solute, to dissolve in a Solvent. The LD50 in mice is about 100mg/kg by ingestion and 1. In Toxicology, the median lethal dose, LD50 (abbreviation for “Lethal Dose 50%” or LCt50 (Lethal Concentration & Time of a 8mg/kg by intravenous injection.

References

  1. ^ a b Holleman, A. F. ; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.
  2. ^ Greenwood, N. N. ; Earnshaw, A. (1997). Chemistry of the Elements, 2nd Edition, Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.  
  3. ^ Reiko Kagawa1, Martin G Montgomery, Kerstin Braig, Andrew G W Leslie and John E Walker (2004). "The structure of bovine F1-ATPase inhibited by ADP and beryllium fluoride". The EMBO Journal 23 (5): 2734–2744. doi:10.1038/sj.emboj.7600293. A digital object identifier ( DOI) is a permanent identifier given to an Electronic document.  

from which the LD50 figures

External links

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