| Autor: |
Kajiwara, Takashi, Shinagawa, Reiko, Ito, Tasuku, Kon, Noriyoshi, Iki, Nobuhiko, Miyano, Sotaro |
| Zdroj: |
Bulletin of the Chemical Society of Japan; December 2003, Vol. 76 Issue: 12 p2267-2275, 9p |
| Abstrakt: |
Using p-tert-butylthiacalix[6]arene (H6L) as a clustering ligand, five cluster complexes having CoII5(2), NiII4(3) and MIINiII4(M = CoII(4), MnII(5), and CuII(6)) cores were synthesized. In all the complexes except for 3, a pinched conic L6-acts as a pentanucleating ligand that involves a similar pyramidally arranged cluster core. Each mixed metal complex 4–6involves four tetragonally arranged NiIIions occupying the basal plane of the pyramid and a MIIion placed at the apex position. In 3, H2L4-is in a cone conformation and the four NiIIions are arranged on the donor surface of H2L4-in a zigzag manner. The mixed metal complexes 4–6are synthesized by reacting 3and the appropriate M(AcO)2in a 1:1 ratio with a novel metal-induced core rearrangement occurring. In this reaction, the insertion of a MIIion at the apex position forces the calixarene to take a cone conformation and the NiII4array rearranges to form a tetragonal cluster. |
| Databáze: |
Supplemental Index |
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