Related Experiment Video
Updated: Jan 10, 2026

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography
Published on: May 16, 2014
Solvation of lithium iodide cluster cations via bridging diamine coordination
Yunseop Choi1, Junyoung Ahn1, Minsu Kim1
1Department of Chemistry, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Pohang, Gyeongsangbuk-do 37673, Republic of Korea.
Abstract:
Diamines are well-known bidentate ligands that coordinate with metal cations; however, their solvation behavior with ionic clusters remains largely unexplored. In this study, we investigated the structures of lithium iodide ionic clusters solvated by ethylenediamine and N,N,N',N'-tetramethylethylenediamine using electrospray ionization(ESI)-ion mobility spectrometry-mass spectrometry. Interestingly, diamines were found to stabilize ionic clusters by bridging two metal cations, even though such structures are not the most thermodynamically stable in the gas phase. We propose that these bridging structures were likely formed and kinetically trapped in the solution phase or in the highly concentrated droplets generated during the ESI process. Furthermore, we analyzed the effects of alkali metal and halide identity on solvation behavior.
More Related Videos
06:44From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
09:45Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
Related Concept Videos
Valence Bond Theory
Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can...
Formation of Complex Ions
Amides to Amines: LiAlH4 Reduction
Amide reduction requires two equivalents of the reducing agent, acting as a source of hydride ions. As shown in the figure, the reaction is initiated with a nucleophilic attack by the hydride ion at the carbonyl carbon to form a tetrahedral intermediate.
Coordination Compounds and Nomenclature