Bond-length distributions in ionically bonded materials with decomposition by coordination environment.

Area of Science:

• Materials Science
• Solid-State Chemistry
• Crystallography

Background:

• Understanding cation-anion bond lengths is crucial for predicting material properties.
• The Crystallography Open Database (COD) provides extensive structural data for inorganic compounds.
• The ChemEnv tool facilitates the analysis of cation coordination environments.

Purpose of the Study:

• To analyze the distribution of cation-anion bond lengths in nitrides, oxides, and fluorides.
• To evaluate the effectiveness of the ionic radius concept in describing these bonds.
• To identify and observe chemical trends in bond length distributions.

Main Methods:

• Utilizing structural data from the Crystallography Open Database (COD).
• Decomposing bond length distributions based on cation coordination environments analyzed with the ChemEnv tool.
• Comparing bond length distributions across different compound types (nitrides, oxides, fluorides).

Main Results:

• The analysis demonstrates the general applicability of the ionic radius concept.
• Observed chemical trends, such as similarities in Sc-O and Zr-O bond length distributions.
• Noteworthy similarities were found in the Mo-O and V-O bond length distributions.
• Reproducible results and additional data for nitrides and fluorides are available.

Conclusions:

• The study validates the utility of ionic radii in understanding cation-anion interactions in inorganic solids.
• Observed chemical trends provide insights into structure-property relationships.
• The methodology offers a robust framework for analyzing bond lengths and coordination in crystalline materials.