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

Abstract

Three isostructural coordination polymers of 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 accepter, a donor-metal-accepter (D-M-A) system was constructed. Radicals generated by photoinduced electron transfer (PET) from donor to accepter result in 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 exhibits both photochromism and photomagnetism in a PET process.

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Publication details

The article was received on 22 Aug 2018, accepted on 04 Oct 2018 and first published on 10 Oct 2018


Article type: Paper
DOI: 10.1039/C8DT03422B
Citation: Dalton Trans., 2018, Accepted Manuscript
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    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, Accepted Manuscript , DOI: 10.1039/C8DT03422B

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