Novel 1-D Chains Constructed of Rings Which Include Six Metal Atoms [M2Au4] (M = Ni, Zn) with Aurophilic Interactions: Structure, Magnetic, and Spectral Studies
✍ Scribed by Shu-Ping Wang; You Song; Dong-Zhao Gao; Li-Cun Li; Qing-Mei Wang; Dai-Zheng Liao; Zong-Hui Jiang; Shi-Ping Yan
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- German
- Weight
- 147 KB
- Volume
- 88
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Two novel 1‐D chain complexes of a formal iminomethyl nitroxide radical [M(tpyimo)~2~]~2~[Au(CN)~2~]~4~ (M = Ni, Zn for 1 and 2, typimo = 4,5‐dihydro‐4,4,5,5‐tetramethyl‐2‐(pyridin‐2‐yl)‐1__H__‐imidazol‐1‐yloxy), were synthesized and structurally characterized. Both 1‐D chains consist of two kinds of chair‐conformation rings, which include six metal atoms [M~2~Au~4~] (M = Ni, Zn), and are connected to each other alternately through aurophilic interactions. On the other hand, [Au(CN)$\rm{_2^ - }$]~4~ oligomers are also formed through aurophilic interactions, and used as bridges in the 1‐D chains. The magnetic coupling between the Ni^II^ ion and the tpyimo radical in 1 is a strong ferromagnetic interaction. Strong ligand‐centered luminescence is observed at room temperature for both complexes.