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Weak Base Solutions

Weak Base Solutions

Some compounds produce hydroxide ions when dissolved by chemically reacting with water molecules. In all cases, these compounds react only partially and so are classified as weak bases. These types of compounds are also abundant in nature and important commodities in various technologies. For example, global production of the weak base ammonia is typically well over 100 metric tons annually, being widely used as an agricultural fertilizer, a raw material for chemical synthesis of other...

Titration of a Weak Base with a Strong Acid

Titration of a Weak Base with a Strong Acid

The titration curve of a weak base like ammonia with a strong acid like hydrochloric acid is the mirror image of the titration curve of a weak acid with a strong base.
Using the ICE table and substituting the Kb value, we calculate the initial pH of 50 mL of 0.1 M ammonia to be 11.11. Addition of 25 mL of 0.1 M hydrochloric acid to this solution of ammonia results in a buffer with an equal concentration of ammonia and ammonium ions. The pH of this buffer can be calculated by substituting these...

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Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method

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Bis(2-hy-droxy-eth-yl)ammonium picrate.

Perumal Nagapandiselvi¹, Rengasamy Gopalakrishnan¹

¹Department of Physics, Anna University, Chennai 600 025, India.

Acta Crystallographica. Section E, Structure Reports Online

|January 16, 2014

Summary

This summary is machine-generated.

This study characterizes a novel salt, bis-(2-hydroxy-ethyl)ammonium picrate, detailing its crystal structure and hydrogen bonding interactions. The findings reveal a complex three-dimensional network formed by various intermolecular forces.

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Area of Science:

Crystallography
Supramolecular Chemistry
Chemical Physics

Background:

The study focuses on the crystal structure of bis-(2-hydroxy-ethyl)ammonium picrate.
Understanding the hydrogen bonding network is crucial for predicting material properties.

Purpose of the Study:

To elucidate the crystal structure of the title salt.
To identify and analyze the hydrogen bonding interactions within the crystal lattice.
To describe the formation of the three-dimensional structure.

Main Methods:

Single-crystal X-ray diffraction was used to determine the crystal structure.
Analysis of intermolecular interactions, including hydrogen bonds (N-H⋯O, O-H⋯O, C-H⋯O).
Identification of graph-set ring motifs (R 2 (1)(6), R 2 (2)(10), R 2 (2)(13)).

Main Results:

The asymmetric unit contains two bis-(2-hydroxy-ethyl)ammonium cations and two picrate anions.
Intramolecular N-H⋯O hydrogen bonds were observed within each cation.
Extensive intermolecular O-H⋯O and N-H⋯O hydrogen bonds link molecules, forming specific ring motifs and a 3D network.

Conclusions:

The crystal structure of bis-(2-hydroxy-ethyl)ammonium picrate is characterized by a robust network of hydrogen bonds.
The identified hydrogen bonding patterns and graph-set motifs contribute to the overall stability and three-dimensional architecture of the crystal.
This detailed structural analysis provides insights into the supramolecular assembly of organic salts.