Lead(II) as a template for the synthesis of a [1 + 1] 18-membered hexadentate N4S2-donor macrocycle; crystal and molecular structure of (acetato-O,O′)[3,13-dithia-6,10-diaza-1,8(2,6)-dipyridinacyclotetradecaphane-6,9-diene]lead(II) hexafluorophosphate

Abstract

The reaction of 2,6-pyridinedicarbaldehyde with 2,6-bis[(2-aminoethyl)thiomethyl)]pyridine in the presence of Pb(O₂CMe)₂ yields the mononuclear lead(II) complex of a [1 + 1] 18-membered, potentially hexadentate, N₄S₂ imine macrocycle, the crystal and molecular structure of which has been determined [space group Pc, a= 8.358(3), b= 15.158(5), c= 10.127(4)Å, β= 99.87(3)°]. This structure represents a rare example of a structurally characterised lead(II) complex with a macrocyclic ligand containing both nitrogen and sulfur donor atoms.