Molecular Recognition by Q-BISDIEN and Its Dinuclear Complexes
Abstract
The protonated forms of the basic ligand 1,4,7,13,16,19-hexaaza-10, 22-dioxacyclotetraco sane or 24ane-N602 (Q-BISDIEN) recognize certain anions. The compounds studied are malonic acid, phosphoric acid, glycine, acetohydroxamic acid, and potassium phosphonousformate in their various protonated and anionic forms. Detailed formation constants measuring this recognition are reported for all species found. 24ane-N602 also forms 1:1 and 1:2 ligand to divalent transition metal ion complexes, with a variety of protonated species and one dinuclear hydroxo bridged form. All of these cationic complexes of Q-BISDIEN exhibit recognition toward the same substrates. The quantitative formation constants for the species formed are also reported. Finally some kinetics are reported for both the formation and decomposition of dioxygen complexes of selected Q-BISDIEN-dicobalt-substrate systems and are discussed in light of principles of molecular recognition.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 30, 1992
- Accession Number
- ADA246654
Entities
People
- Arthur E. Martell
- Ramunas J. Motekaitis
Organizations
- Texas A&M University