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Acid Strength and Molecular Structure03:05

Acid Strength and Molecular Structure

Binary Acids and Bases
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with increasing...
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Carboxylic acid derivatives contain an acyl group attached to a heteroatom such as chlorine, oxygen, or nitrogen. The carbonyl carbon and oxygen are both sp2-hybridized with an unhybridized p orbital.
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Synthesis and Structure Determination of &#181;-Conotoxin PIIIA Isomers with Different Disulfide Connectivities
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Blue alkali dinitrosomethanides: synthesis, structure, and bonding.

Harald Brand1, Peter Mayer, Kurt Polborn

  • 1Department Chemie und Pharmazie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13 (Haus F), 81377 München, Germany.

Journal of the American Chemical Society
|February 3, 2005
PubMed
Summary

Researchers synthesized stable alkali dinitrosomethanides, compounds of interest in pharmaceuticals and materials science. This new, simple method offers a high yield for these explosive materials at room temperature.

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Area of Science:

  • Inorganic Chemistry
  • Materials Science
  • Organic Chemistry

Background:

  • Alkali dinitrosomethanides are explosive compounds with potential applications.
  • Previous synthetic routes may be complex or low-yielding.

Purpose of the Study:

  • To develop a new, simple, and high-yielding synthesis for alkali dinitrosomethanides.
  • To characterize the synthesized compounds and assess their stability.

Main Methods:

  • A novel synthetic procedure was employed for the preparation of alkali dinitrosomethanides.
  • Characterization techniques were used to confirm the structure and purity of the compounds.
  • Stability studies were conducted at ambient temperature.

Main Results:

  • Alkali dinitrosomethanides (M[HC(NO)2]; M = Li, Na, K, Cs) were successfully prepared.
  • The new synthetic procedure is simple and provides a high yield.
  • The synthesized compounds were found to be stable at ambient temperature.

Conclusions:

  • A facile and efficient method for synthesizing stable alkali dinitrosomethanides has been established.
  • These compounds are accessible for further research and application development in various scientific fields.
  • The stability of these materials at ambient temperature broadens their potential utility.