Citation: ZHANG Hai-Feng, CHEN Yan-Mei, QIN Ya-Ru, LI Ya-Hong, LI Wu. Cu^II and Cu^I Complexes of 1,1'-(Pyridin-2-ylmethylene)- bis[3-(pyridin-2-yl)imidazo[1,5-a]pyridine]: in situ Generation of the Ligand via Acetic Acid-controlled Metal-ligand Reactions[J]. Chinese Journal of Structural Chemistry, ;2015, 34(9): 1417-1427. doi: 10.14102/j.cnki.0254-5861.2011-0680 shu

Cu^II and Cu^I Complexes of 1,1'-(Pyridin-2-ylmethylene)- bis[3-(pyridin-2-yl)imidazo[1,5-a]pyridine]: in situ Generation of the Ligand via Acetic Acid-controlled Metal-ligand Reactions

1.
a College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China;
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b Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China

Corresponding author: LI Ya-Hong,
Received Date: 10 February 2015
Available Online: 10 July 2015
Fund Project: Supported by NNSFC (21272167) (21272167)

Reaction of 3-(pyridin-2-yl)-imidazo[1,5-a]pyridine (HPIP), CuCl₂·2H₂O and picolinaldehyde in the mixture of CH₃COOH and EtOH under solvothermal conditions gave complexes [LCuCl][Cu₂Cl₃] (1) and [HLCuCl]₂[CuCl₂]₂[CuCl₃]·2H₂O (2) (L=1,1'-(pyridin-2- ylmethylene)bis[3-(pyridin-2-yl)imidazo[1,5-a]pyridine]) simultaneously. The ligand L was generated via in situ metal-ligand reaction between HPIP and picolinaldehyde. When CuCl₂·2H₂O was replaced by CuCl, the 2:1:1 (HPIP:picolinaldehyde:CuCl) reaction afforded complex [Cu₃L₂Cl₂][CuCl₂]·2H₂O (3) and the analogous 2:1:3 reaction generated compound [Cu₃L₂][CuCl₂]₃ (4). Complexes 1 and 2 are Cu^II/Cu^I mixed-valence compounds. Complexes 1~4 display four various structures. It is found that the formation of the L ligand is controlled by CH₃COOH. This work reveals that the structures of complexes 1~4 could be rationally tuned via the inclusion of CH₃COOH in the reaction systems, the proper selection of different starting materials and the dexterous adjustment of the ratio of the starting materials.
- Imidazo[1,5-a]pyridine,
- coordination chemistry,
- Cu^II complex
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

CuII and CuI Complexes of 1,1'-(Pyridin-2-ylmethylene)- bis[3-(pyridin-2-yl)imidazo[1,5-a]pyridine]: in situ Generation of the Ligand via Acetic Acid-controlled Metal-ligand Reactions

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通讯作者: 陈斌, bchen63@163.com

Cu^II and Cu^I Complexes of 1,1'-(Pyridin-2-ylmethylene)- bis[3-(pyridin-2-yl)imidazo[1,5-a]pyridine]: in situ Generation of the Ligand via Acetic Acid-controlled Metal-ligand Reactions