Citation: Yang LIU, Xiao-Quan ZHU, Xin-Tao WU, Tian-Lu SHENG. Syntheses and Characterizations of Cyanido-bridged Dinuclear Ru-complexes and Their MMCT Properties in the One-electron Oxidation State[J]. Chinese Journal of Structural Chemistry, ;2021, 40(10): 1253-1264. doi: 10.14102/j.cnki.0254–5861.2011–3147 shu

Syntheses and Characterizations of Cyanido-bridged Dinuclear Ru-complexes and Their MMCT Properties in the One-electron Oxidation State

Yang LIU ^{a, b, c} ,
Xiao-Quan ZHU ^b ,
Xin-Tao WU ^b ,
Tian-Lu SHENG ^b,,

a.
College of Chemistry, Fuzhou University, Fuzhou 350002, China
b.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
c.
University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: Tian-Lu SHENG, tsheng@fjirsm.ac.cn
Received Date: 22 February 2021
Accepted Date: 26 March 2021

Fund Project: the National Science Foundation of China 21773243the National Science Foundation of China 21973095the Strategic Priority Research Program of Chinese Academy of Sciences XDB20010200

Figures(6)

We have designed and synthesized a family of dinuclear cyanido-bridged complexes [PY5Me₂Ru(μ-CN)Ru(dppe)CpMe_n][PF₆]₂ (PY5Me₂ = 2, 6-bis (1, 1-bis (2-pyridyl)ethyl) pyridine, Cp = cyclopentadienyl, n = 0, 2[PF6]₂; n = 1, 3[PF6]₂; n = 5, 4[PF6]₂) by using a mononuclear complex [PY5Me₂Ru(μ-CN)][PF₆] (1) as the precursor. All the three complexes have been fully characterized by including single-crystal X-ray diffraction analysis. The one-electron oxidation complexes 2³⁺, 3³⁺ and 4³⁺ obtained in situ all show a MMCT absorption band in the visible range. The MMCT energy increases as the redox potential of the N-terminal fragments decreases, and the redox potential decreases as the number of methyl groups on the cyclopentadiene of the cyanido-nitrogen coordinated Ru metal increases, supported by the TDF/TDDFT calculations.
- electron transfer,
- mixed-valence,
- metal to metal charge transfer (MMCT),
- cyanide bridge
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沈阳化工大学材料科学与工程学院沈阳 110142