REACTION OF TETRAKIS[(3-PYRIDYLMETHYL)OXY] P-TERT-BUTYLCALIX(4)ARENE WITH KAUCL4 AND K2PTCL6 - NEW PYRIDINOCALIX(4)ARENE ADDUCTS OF GOLD(III) AND PLATINUM(IV)

摘要

Tetrakis [(3-pyridylmethyl)oxy]p-tert-butylcalix(4) arene prepared from p-tert-butylcalix(4) arene and 3-chloromethylpyridine under basic conditions was characterized by H-1 and C-13 NMR. Protonation constants of this ligand in methanol at 298.15 K derived from potentiometric data are reported. Au-III and Pt-IV adducts of tetrakis[(3-pyridylmethyl)oxy]p-tert-butylcalix(4)arene have been isolated. It is concluded that this calixarene derivative displaces chloride ions from the coordination spheres of the central atoms in AuCl4- and PtCl6- species, engaging itself in direct interaction with Au-III and Pt-IV. (C) 1997 Elsevier Science Ltd. [References: 8]