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Calix[4]thiacrowns as ditopic hosts for homo- and heterobinuclear accommodation: First report of a chopsticks-type pi-coordination
- Authors
- Lee, Jai Young; Kwon, Jongchul; Park, Chul Soon; Lee, Ji-Eun; Sim, Wonbo; Kim, Jong Seung; Seo, Joobeom; Yoon, Il; Jung, Jong Hwa; Lee, Shim Sung
- Issue Date
- 1-Feb-2007
- Publisher
- AMER CHEMICAL SOC
- Citation
- ORGANIC LETTERS, v.9, no.3, pp 493 - 496
- Pages
- 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- ORGANIC LETTERS
- Volume
- 9
- Number
- 3
- Start Page
- 493
- End Page
- 496
- ISSN
- 1523-7060
1523-7052
- Abstract
- Calix[4]thiacrowns with hetero-(1) and a homodonor set (L-2) were synthesized and characterized by X-ray analysis. From the reaction of L-2 with AgPF6, disilver complex [Ag-2(L-2)](PF6)(2) (1) was isolated. By comparing 1,3-alternate conformations of L-2 and 1, we found a considerable decrease of dihedral angles of two opposite aromatic rings upon complexation. This finding can be explained in terms of the "chopsticks process", which illustrates how Ag+-arene pi-coordination occurs. Heterobinuclear complexation of L-1 in solution was also observed.
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