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Extended Open-Chain Polyenides as Versatile Delocalized Anion Ligands for Metal Chain Clusters |
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| Authors: | Mitsuki Yamashita Yuna Kawasumi Yuki Tachibana Dr Shinnosuke Horiuchi Dr Koji Yamamoto Prof Tetsuro Murahashi |
| Institution: | 1. Department of Chemical Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8552 Japan;2. Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science, National Institutes of Natural Sciences, Myodaiji, Okazaki, Aichi, 444-8787 Japan
Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871 Japan;3. Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science, National Institutes of Natural Sciences, Myodaiji, Okazaki, Aichi, 444-8787 Japan |
| Abstract: | Although small cyclic- and open-chain unsaturated hydrocarbon anions such as cyclopentadienide and open-chain pentadienide are used as the strongly electron-donating auxiliary ligands for metal complexes, more extended π-conjugated unsaturated hydrocarbon anions have rarely been used in coordination chemistry, despite their potential ability to serve as the multiply bridging π-ligands for metal clusters. This work reports isolation of metal chain clusters bearing the multi-dentate, open-chain extended unsaturated hydrocarbon anion ligands. The extended open-chain π-conjugated polyenyl ligands could effectively stabilize oxidized palladium chains, including an unprecedented Pd4]4+ chain. |
| Keywords: | bridging ligands cluster compounds coordination modes metal chain clusters palladium polyenyl |