Issue 44, 2018

Photoinduced electron transfer and remarkable enhancement of magnetic susceptibility in bridging pyrazine complexes

Abstract

Three isostructural coordination polymers of the formula [MCl2(DMSO)2(pz)]n (pz = pyrazine, DMSO = dimethyl sulfoxide, M = Mn, Fe and Co for 1–3) were synthesized through the solvothermal reaction of MCl2, DMSO and pz. By introducing DMSO and chloride as electron donor ligands and pz as an accepter, a donor–metal–accepter (D–M–A) system was constructed. Radicals generated by photoinduced electron transfer (PET) from a donor to an accepter result in a dramatic change of vibronic absorption spectra in UV regions and remarkable enhancement of magnetic susceptibility. The mechanism of PET was also determined by PXRD, IR, EPR and XPS measurements. This is the first example of bridging pz complexes which exhibit both photochromism and photomagnetism in a PET process.

Graphical abstract: Photoinduced electron transfer and remarkable enhancement of magnetic susceptibility in bridging pyrazine complexes

Supplementary files

Article information

Article type
Paper
Submitted
22 Aug 2018
Accepted
04 Oct 2018
First published
10 Oct 2018

Dalton Trans., 2018,47, 15888-15896

Photoinduced electron transfer and remarkable enhancement of magnetic susceptibility in bridging pyrazine complexes

B. Xia, Y. Zhou, Q. Wang, X. Xu, Y. Tong, X. Bu and J. Li, Dalton Trans., 2018, 47, 15888 DOI: 10.1039/C8DT03422B

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