First example of template synthesis of pentzzza macrocyclic ytterbium(III) complex and solvent-controlled supramolecular self-assembly of its dimeric mu-eta~2:eta~2 peroxo-bridged derivative

摘要

The unprecedented template action of ytterbium ion in the synthesis of pentaaza macrocyclic Schiff bases is exemplfied by isolation and definitive identification of the seven-coordinate pentagonal bipyramidal complex of formula [YbLCl_2]ClO_4 (1),where L is 2,14-dimethyl-3,6,10,13,19-pentaazabicyclo[13.3.1.]nonadeca-1(19),2,13,15,17-pentaene,providing the first example of crystallograophically characterized pentaaza macrocyclic ytterbium complex.This complex is capable of forming the dimeric peroxo [Yb_2L_2(mu-eta~2:eta~2-O_2]Cl)_2](ClO_4)_2 (2) derivative containing the biologically significant planar side-on doubly bidentate coordiantion mode of the peroxide.In the crystal structure,inclusion of the appropriate solvent molecule generates supramolecular architecture in which the solvent-controlled self-assembly is observed.