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Issue 103, 2016, Issue in Progress
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Structure-dependent electronic transition in a new type of π-electron delocalized multi-sulfur bis(dithiolene)nickel complex

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Abstract

Four new nickel bis(dithiolene) complexes with different substituent groups on their benzene rings were synthesized and characterized. X-ray structure analysis reveals that the anions of these Ni-complexes exhibit chair-like configurations. Magnetic measurements confirm that compounds 1–4 show antiferromagnetic interactions. The absorption spectra show strong and broad absorptions in the near-infrared region (700–1100 nm). Density functional theory (DFT) calculations indicate that the HOMO and LUMO energy levels are highly dependent on the electron donating/withdrawing abilities of the substituents. The electron-donating substituent results in a bathochromic-shift absorption, while the electron-withdrawing substituent leads to a hypsochromic-shift absorption band. Moreover, the results of solution-state electrochemical studies also show a good agreement with our findings in spectroscopic and DFT studies.

Graphical abstract: Structure-dependent electronic transition in a new type of π-electron delocalized multi-sulfur bis(dithiolene)nickel complex

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Publication details

The article was received on 09 Aug 2016, accepted on 17 Oct 2016 and first published on 18 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA20109A
Citation: RSC Adv., 2016,6, 100783-100789
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    Structure-dependent electronic transition in a new type of π-electron delocalized multi-sulfur bis(dithiolene)nickel complex

    Q. Yu, J. Ge, Z. Lv, H. Wang and J. Zuo, RSC Adv., 2016, 6, 100783
    DOI: 10.1039/C6RA20109A

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