| Institution: | Department of Chemistry, Texas A&M University, College Station, TX 77843-3255, USA |
| Abstract: | The reactions of monophosphate (Mp) and triphosphate (Tp) with the protonated hexaaza macrocyclic ligand 3,6,9,16,19,22-hexaaza-27,28-dioxatricyclo22.2.1.111,14]octacosa-1 (26),11,13,24-tetraene (BFBD) and its mono- and dinuclear copper(II) complexes, have been investigated. Potentiometric studies show that Tp is bound to protonated BFBD and Cu(II) complexes of this ligand more strongly than is MP. The crystal structures of two new binary complexes of Mp and Tp with this ligand are reported. Both of them crystallize in the triclinic system with space group P1. The binary complex 1 has lattice parameters a = 12.630, b = 13.152, c = 12.561 A?,  = 96.359(1), β = 98.02(2), γ = 117.85(1)° and Z = 2. It contains the BFBD-Mp binary cation. The binary complex 2 has lattice parameters a = 12.717(4), b = 14.331(7), c = 19.687(7) A?, = 96.66(3), β = 107.68(2), γ = 93.11(3)° and Z = 2. It consists of the BFBD-Tp cation and the BFBD-2Tp anion. Electrostatic attractive forces and hydrogen bonds play major roles in the formation of these binary complexes. |
