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Related Experiment Video

Updated: Feb 11, 2026

A Real-world What-Where-When Memory Test

A Real-world What-Where-When Memory Test

Published on: May 16, 2017

A Chelate with Conformational Memory?

M Aránzazu Alonso¹, Juan A Casares¹, Pablo Espinet¹

¹Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, E-47005 Valladolid (Spain), Fax: (+349) 983-423013.

Angewandte Chemie (International Ed. in English)

|May 2, 2018

Summary

This summary is machine-generated.

Amino group exchange in complex cation 1 demonstrates "conformational memory." This phenomenon, where incoming groups mirror the leaving group

Keywords:

Asymmetric synthesis Chirality N ligands P ligands Rhodium

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Area of Science:

Coordination chemistry
Stereochemistry

Background:

The study investigates the exchange of amino groups within a complex cation.
Understanding the stereochemical outcomes of such exchanges is crucial in coordination chemistry.

Purpose of the Study:

To elucidate the mechanism and stereochemical control in the exchange of coordinated for pendant amino groups.
To explore the concept of "conformational memory" in complex cations.

Main Methods:

Utilizing a specific complex cation (labeled as 1) to study amino group exchange.
Analyzing the reaction kinetics and conformational preferences of incoming and leaving groups.

Main Results:

The exchange of coordinated and pendant amino groups occurs at the same rate for both concave and convex positions.
The incoming amino group consistently adopts the same conformation as the leaving amino group, exhibiting "conformational memory".

Conclusions:

The observed "conformational memory" is a direct result of the principle of microscopic reversibility.
Chirality induction in prochiral reagents plays a key role in this stereochemical outcome.