Ternary Se-Ru-Cu clusters: Facile synthesis, electrochemistry, and UV/Vis absorption

Minghuey Shieh*, Chia Yeh Miu, Yu Hsin Liu, Yen Yi Chu, Kai Jieah Hsing, Jung I. Chiu, Chung Feng Lee

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

New ternary Se-Ru-Cu octahedral-based complexes, namely, CuX-capped SeRu5 clusters [SeRu5(CO)143-CuX)]2- (2a-2c; X = Cl, Br, I), bis-CuX-capped SeRu5 clusters [SeRu5(CO)143-CuX)2]2- (3a, 3b; X = Cl, Br), Cu4X2-bridged di-SeRu5 clusters [{SeRu5(CO)14}26-Cu4X2)]2- (4a, 4b; X = Cl, Br), and bis-CuX-incorporated Se2Ru4 clusters [Se2Ru4(CO)10(μ-CuX)2]2- (5a-5c; X = Cl, Br, I), were prepared from the reaction of the binary cluster [SeRu5(CO)14]2- (1) with CuX under appropriate conditions. Their solid-state packing formed cluster-based 1D-supramolecular chains, which were stabilized by C-HX/Y (X = halides; Y = O) H-bonding between CuX/COs of cluster anions and the CH moieties of the [PPh4]+ or [PPN]+ cations. In addition, electrochemical studies showed that the successive anodic shifts were found for 1-4b, tuned by the incoming CuBr fragments introduced into the parent SeRu5 cluster, supported by their decreasing HOMO levels and increasing ionization energies. Solid-state diffuse reflectance spectra showed these Se-Ru-Cu complexes exhibited semiconducting behaviors with the low and tunable energy gaps of 0.82-1.08 eV. Significantly, the solid-state absorptions of 2b and 4b were red-shifted compared with the corresponding Te analogues, which was explained by the larger numbers of the density of states (DOS) close to the HOMO for the selenide cases.

原文英語
頁(從 - 到)74-83
頁數10
期刊Journal of Organometallic Chemistry
815-816
DOIs
出版狀態已發佈 - 2016 八月 1

ASJC Scopus subject areas

  • 生物化學
  • 物理與理論化學
  • 有機化學
  • 無機化學
  • 材料化學

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