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For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
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Related Experiment Video

Updated: Jun 1, 2026

Investigations on the Ga(III) Complex of EOB-DTPA and Its 68Ga Radiolabeled Analogue

Investigations on the Ga(III) Complex of EOB-DTPA and Its ⁶⁸Ga Radiolabeled Analogue

Published on: August 17, 2016

Hexaaqua-gallium(III) trinitrate trihydrate.

Arthur D Hendsbee¹, Cory C Pye, Jason D Masuda

¹Department of Chemistry, Saint Mary's University, Halifax, Nova Scotia, Canada B3H 3C3.

Acta Crystallographica. Section E, Structure Reports Online

|May 18, 2011

Summary

This study details the crystal structure of gallium(III) nitrate hydrate, finding it isostructural with other M(III) nitrate hydrates. The structure features distinct octahedral gallium(III) units involved in extensive hydrogen bonding.

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An Aptamer-based Sensor for Unchelated Gadolinium(III)

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Published on: August 17, 2016

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An Aptamer-based Sensor for Unchelated Gadolinium(III)

An Aptamer-based Sensor for Unchelated Gadolinium(III)

Published on: January 9, 2017

Area of Science:

Inorganic Chemistry
Crystallography
Materials Science

Background:

Gallium(III) nitrate hydrates are analogs to other M(III) nitrate hydrates.
Understanding the structural characteristics of these compounds is crucial for materials science applications.

Purpose of the Study:

To elucidate the crystal structure of gallium(III) nitrate hydrate, [Ga(H(2)O)(6)](NO(3))(3)·3H(2)O.
To compare its structural features with known isostructural M(III) nitrate hydrates.

Main Methods:

Single-crystal X-ray diffraction analysis was employed.
Structural characterization involved identifying coordination environments and intermolecular interactions.

Main Results:

The compound [Ga(H(2)O)(6)](NO(3))(3)·3H(2)O was confirmed to be isostructural with aluminum, chromium, and iron nitrate hydrates.
Two distinct octahedral gallium(III) hexaaqua units were observed within the asymmetric unit.
Extensive intermolecular hydrogen bonding networks involving nitrate anions and water molecules were identified.

Conclusions:

The structural determination of gallium(III) nitrate hydrate provides valuable insights into the coordination chemistry of gallium(III).
The observed isostructural relationship highlights trends in the M(III) nitrate hydrate series.
The detailed hydrogen bonding network offers a basis for understanding solid-state properties.