Mixed‐Valence Nickel Bis(azamacrocycle) Compounds with Ghost‐Leg‐type Sheets

Abstract

The fabrication of so-called ghost-leg sheets and their electronic properties is reported. This unique sheet structure is composed of one-dimensional mixed-valence nickel chains,w hicha re linked with one another by bis(azamacrocycle) ligands.T hey are also topologically unique Ni II / Ni III mixed-valence complexes,a sc onfirmed by X-ray and optical measurements.Moreover,their magnetic susceptibilities indicated two-dimensional antiferromagnetic behavior following the Fisher 1D chain model with interchain interactions, where spins on Ni III sites mutually interact antiferromagnetically in the sheets. and Institute for Integrated Cell-MaterialS ciences (iCeMS), Kyoto University Yoshida, Sakyo-ku, Kyoto 606-8501 (Japan)Supportinginformation for this article (including details of the synthetic methods, X-ray crystallographic information, IR spectroscopy,Raman spectroscopy)c an be found under: http://dx.

A Three‐Dimensionally Extended Metal–Organic Ladder Compound Exhibiting Proton Conduction

“…Among coordination complexes, we have focused on the 1D halogen‐bridged transition metal complexes (MX‐chains) because their electronic states can be controlled by structural components such as metal ions, halides, organic ligands, and counteranions [10] . Recently, by connecting the MX‐chains with organic ligands, a variety of metal–organic ladder compounds (so‐called MX‐ladders) based on the dimensional extension of MX‐chains have been obtained; these include the two‐legged ladder, [11] four‐legged tube, [12] and 2D extended two‐legged ladder (2D ghost‐legged sheet) [13] (Figure 1). In these MX‐ladder compounds, unique electronic state, unique sorption properties and high proton conductivity were observed.…”

“… Schematics of two‐legged MX‐ladder, [11] 2D extended two‐legged MX‐ladder (2D ghost‐legged sheet), [13] and 3D extended two‐legged MX‐ladder compounds (this work).…”