TY - DATA T1 - Synthesis and Recognition Properties of a Ruthenium(II)−Bis(zinc) Cyclic Porphyrin Trimer PY - 2000/11/29 AU - Simon J. Webb AU - Jeremy K. M. Sanders UR - https://acs.figshare.com/articles/journal_contribution/Synthesis_and_Recognition_Properties_of_a_Ruthenium_II_Bis_zinc_Cyclic_Porphyrin_Trimer/3599799 DO - 10.1021/ic000411g.s001 L4 - https://ndownloader.figshare.com/files/5687739 KW - Ru KW - convergent route KW - bind Py 3 T KW - THF KW - binding selectivity KW - Py 3 T KW - ruthenium porphyrin monomer KW - CO group KW - fluorescence spectroscopy KW - NMR KW - UV KW - cyclic metalloporphyrin trimers KW - Recognition Properties KW - CDCl 3 N2 - A series of cyclic metalloporphyrin trimers containing one Ru(II)−CO porphyrin center are synthesized. A stepwise convergent route is used to synthesize Ru(CO)Zn22·Py3T, where tripyridyltriazine (Py3T) templates the formation of the trimer and forces the CO group to the outside of the cavity. Three mixed-metal trimers, Ru(CO)Zn22, Ru(CO)Ni22, and Ru(CO)Mg22, are synthesized from Ru(CO)Zn22·Py3T and are characterized by NMR, UV−visible, and fluorescence spectroscopy. The Ru(CO)Zn22 trimer is found to bind Py3T very tightly (K ≈ 1012 M-1), the resultant complex dissociating very slowly (kdissoc ≈ 3 × 10-7 s-1) in CDCl3 at 60 °C. During the course of these studies, the binding selectivity of a ruthenium porphyrin monomer, Ru(CO)3, for pyridine over THF is estimated to be ca. 7 × 104:1. ER -