Dimethylthallium(III) complex of a cylindrical crown ether: molecular structure of [Tl(CH3)2(L)]ClO4

Abstract

The complex [Tl(CH₃)₂(L)]ClO₄ was prepared from tridecalino-18-crown-6 {1,4,15,18,29,32-hexaoxaperhydro[4.4.4](4a,8a) naphthalenophane}(L) and dimethylthallium(III) perchlorate. The molecular structure has been determined by single-crystal X-ray diffraction methods. The O₆ hexagon of the crown ether is planar within 0.05 Å and the decalin moieties apparently construct a cylinder wall. The linear dimethylthallium(III) ion penetrates into the centre of the O₆ hexagon with six equal Tl–O bonds and the decalin walls are in contact with methyl groups of the dimethylthallium(III) ion.