Self-assembled supramolecular architecture with alternating porphyrin and phthalocyanine, bonded by hydrogen bonding and π–π stacking

Abstract

5, 10, 15, 20-tetraphenyl porphyrinato manganese (III) (MnTPP) ligated by THF in opposite axial directions and a sixcoordinate phthalocyaninato cobalt (II) (CoPc) with 1-phenyl-1H-tetrazole-5-thiol (HL) molecules as axial ligands were self-assembled in a mixed solution of tetrahydrofuran and acetone ( v/ v = 1:1) to form a hydrogen bonding “polymer” alternated with porphyrin (Por) and phthalocyanine (Pc) molecules, MnTPP(THF) 2CoPc(L) 2( 1). The hydrogen bonding interaction was contributed by nitrogen [in the axial ligand (L −) of phthalocyanine] and hydrogen atom (in a peripheral phenyl around the porphyrin ring). This hydrogen bonding “polymer” was also enhanced by π–π stacking of the tetrazole in L − with both TPP and Pc macrocycles. These polymer chains were constructed into their three-dimension (3D) architecture only by Van der Waal’s attractions. Crystal data for 1 indicate a triclnic system of P-1. Unit cell: a = 11.3932(8) Å, b = 12.6462(9) Å, c = 14.4939(11) Å, α = 91.1970(10)°, β = 95.5050(10)°, γ = 90.7200(10)°, and with cell volume of 2078.0(3) Å 3.