Two organometallic fragments inclusioned in a 1,3-alternate calix[4]arene tetraphosphane: Evidence for transition metal-arene interaction through the cavity

Sanghoon Kim, Jong Seung Kim, Kuk Kim Sung, Il Hwan Suh, Ook Kang Sang, Jaejung Ko

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The preparation of an 1,3-alternate calix[4]arene tetraphosphane ligand, 25,26,27,28-tetrakis{2-(diphenylphosphino)-ethoxy}calix[4]arene (4), is described. Ligand 4 is obtained in four steps in 17% overall yield. Reaction of 4 with AgBF4 produced the encapsulated two silver complex [Ag 2{(P,P,P,P)-tetraphencalix[4]arene}](BF4)2. The solid-state structure shows that the encapsulated silver undergoes a substantial π-interaction by two opposite arene rings. Rhodation of 4 employing [Rh(cot)2]BF4 yielded the encapsulated complex with a bent coordination mode. Two organometallic fragments inclusioned inside a 1,3-alternate calix[4]arene tetraphosphane was also achieved by the reaction of 4 with [PtH(PPh3)2(thf)]+. Full characterization includes X-ray structural studies of compounds 4-6.

Original languageEnglish
Pages (from-to)1846-1851
Number of pages6
JournalInorganic Chemistry
Issue number6
Publication statusPublished - 2005 Mar 21
Externally publishedYes


ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

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