Basic beryllium acetate

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Basic beryllium acetate
Beacetate.png
Identifiers
CAS number 19049-40-2 YesY
PubChem 3035396
ChemSpider 2299653
EC number 242-785-4
Properties
Molecular formula C
12
H
18
Be
4
O
13
Molar mass 406.3122 g/mol
Appearance colorless
Melting point 285 °C
Boiling point 330 °C
Solubility in chloroform soluble
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

basic beryllium acetate is the chemical compound with the formula Be4O(O2CCH3)6. Although this compound has no applications and has been only lightly studied, it adopts a distinctive structure. "Basic acetates" consist of an ensemble of metal atoms, a central oxide atom, and an exterior of acetate groups. Another family of basic acetates are trimetallic with the formula M3O(O2CCH3)6(H2O)3 (M = Cr, Fe, Ru). Mixed metal members of this family also exist.

Preparation[edit]

It can be prepared by treating basic beryllium carbonate with hot acetic acid.

2 Be
2
CO
3
(OH)
2
+ 6 AcOH → Be
4
O(AcO)
6
+ 5 H
2
O
+ 2 CO
2

Basic beryllium acetate is insoluble in water but soluble in chloroform, consistent with it being nonpolar. It melts and sublimes in a vacuum without decomposition.[1]

Structure[edit]

The structure of Be4O(O2CCH3)6 is relevant to its considerable stability. It is diamondoid, consisting of interlocking six-membered Be2O3C rings. The structure of this compound has been examined by two famous crystallography laboratories.[2][3]

Schematic structure of basic beryllium acetate

References[edit]

  1. ^ Moeller, T. (1950). "Basic Beryllium Derivatives of Organic Acids". In Audrieth, L. F. Inorganic Syntheses, Volume 3. John Wiley & Sons. p. 4. doi:10.1002/9780470132340.ch2. ISBN 978-0-470-13234-0. 
  2. ^ Bragg, W. H. (1923). "Crystal Structure of Basic Beryllium Acetate". Nature 111 (2790): 532. Bibcode:1923Natur.111..532B. doi:10.1038/111532a0. 
  3. ^ Pauling, L.; Sherman, J. (1934). "The Structure of the Carboxyl Group. II. The Crystal Structure of Basic Beryllium Acetate". Proceedings of the National Academy of Sciences 20 (6): 340. Bibcode:1934PNAS...20..340P. doi:10.1073/pnas.20.6.340.