Copper(I) and silver(I) coordination assemblies of imino-pyridyl and azino-pyridyl ligands: Syntheses, crystal structures, spectroscopic and photophysical properties

摘要

Six coordination polymers, [Cu(μI)(L~1)]n (1), [Cu(μI)(L~2)]_n (2), [Cu(μI)(L~3)] _n (3), [Cu(μI)(L~4)]_n (4), [Ag(L ~4)(NO_3)]_n (5) and {[Ag(L~5)](ClO _4)·4CH_3CN)}_n (6) based on coinage metals Cu(I)/Ag(I) and a set of five imino-pyridyl ligands (L~1-L ~5) have been synthesized. The self-assembling behaviour of the metals and the ligands and photo-physical properties of these coordination polymers have been described. Cu_2I_2 secondary building unit (SBU) is a robust feature of the Cu and Iodine self-assembly. This SBU along with the ligands provides 1D coordination polymers in 1, 2 and 4 and 2D coordination polymer in 3. The Ag(I) complex 5 is a helical coordination polymer and 6 is a 2D coordination polymer with (4, 4′) net architecture with rhombic grids.