Related Experiment Video
Updated: Aug 6, 2026

Synthesis of Triazole and Tetrazole-Functionalized Zr-Based Metal-Organic Frameworks Through Post-Synthetic Ligand Exchange
Published on: June 23, 2023
Lattice-driven switching of reaction mechanisms in Nd-substituted Ruddlesden-Popper oxysulfides
Naoto Takada1, Akira Nasu1,2, Cho Rong Kim2
1Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo, Japan.
Abstract:
Ruddlesden-Popper-type oxysulfides Ln2Ti2O5S2 (Ln = Y, Nd) exhibit reversible lithium insertion. Nd substitution induces switching from biphasic to monophasic reaction behaviour in the low-potential region, as revealed by operando X-ray diffraction. Systematic solid-solution studies identify lattice expansion as the key parameter that switches the reaction mechanism.
Related Concept Videos
Woodward–Hoffmann Selection Rules and Microscopic Reversibility
Reaction Mechanisms
For instance, the decomposition of ozone appears to follow a mechanism with two steps:
Rate-Determining Steps
In a multistep reaction mechanism, one of the elementary steps progresses significantly slower than the others. This slowest step is called the rate-limiting step (or rate-determining step). A reaction cannot proceed faster than its slowest step, and hence, the rate-determining step limits the overall reaction rate.
The concept of rate-determining step can be understood from the analogy of a 4-lane freeway with a short-stretch of traffic-bottleneck caused due to...
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
Radical Reactivity: Overview
Ladder Diagrams: Redox Equilibria
Consider the Fe3+/Fe2+ half-reaction, which has a standard-state potential of +0.771 V. At potentials more positive than +0.771 V, Fe3+ predominates, whereas Fe2+...
