Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/143967
Title: | Element-Selective Molecular Charge Transport Characteristics of Binuclear Copper(II)-Lanthanide(III) Complexes |
Author: | Schmitz, Sebastian Kovalchuk, Andrew Martín Rodríguez, Alejandro van Leusen, Jan Izarova, Natalya V. Bourone, Svenja D. M. Ai, Yong Ruiz Sabín, Eliseo Chiechi, Ryan C. Kögerler, Paul Monakhov, Kirill Yu. |
Keywords: | Ions Compostos complexos Ions Complex compounds |
Issue Date: | 24-Jul-2018 |
Publisher: | American Chemical Society |
Abstract: | A series of isostructural dinuclear 3d-4f complexes, isolated as [CuLn(L·SMe)2(OOCMe)2(NO3)]·xMeOH (Ln = Gd 1, Tb 2, Dy 3, and Y 4; x = 0.75-1) and comprising one acetate and two thioether-Schiff base (L·SMe-) bridging ligands based on 4-(methylthio)aniline and 2-hydroxy-3-methoxybenzaldehyde (HL·SMe = C15H15NO2S), was synthesized and fully characterized. The magnetic properties of the charge-neutral {CuLn} complexes are dominated by ferromagnetic CuII-LnIII exchange interactions. Large-area electron transport studies reveal that the average conductivity of robust, self-assembled {CuLn} monolayers on a gold substrate is significantly lower than that of common alkanethiolates. Theoretical calculations of transmission spectra of individual complexes 1 and 4 embedded between two metallic electrodes show that the molecular current-voltage (I-V) characteristics are strongly influenced by electron transport through the Cu centers and thus fully independent of the lanthanide ion, in excellent agreement with the experimental I-V data for 1-4. The β-polarized transmission indicated by calculations of 1 and 4 points out their potential as spin filters. In addition, the reactivity of the title compound 1 with CuII in a square-pyramidal coordination environment toward methanolate and azide was examined, resulting in the formation of a linear trinuclear complex, [Cu2Na(L·SMe)4]NO3·3MeOH (5), characterized by antiferromagnetic exchange interactions between the two copper ions. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1021/acs.inorgchem.8b01279 |
It is part of: | Inorganic Chemistry, 2018, vol. 57, num. 15, p. 9274-9285 |
URI: | http://hdl.handle.net/2445/143967 |
Related resource: | https://doi.org/10.1021/acs.inorgchem.8b01279 |
ISSN: | 0020-1669 |
Appears in Collections: | Articles publicats en revistes (Institut de Química Teòrica i Computacional (IQTCUB)) Articles publicats en revistes (Química Inorgànica i Orgànica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
681819.pdf | 2.38 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.