Synthesis, structural studies, and oxidation catalysis of the manganese(II), iron(II), and copper(II) complexes of a 2-pyridylmethyl pendant armed side-bridged cyclam.

ABSTRACT: The first 2-pyridylmethyl pendant armed structurally reinforced cyclam ligand has been synthesized and successfully complexed to Mn²⁺, Fe²⁺, and Cu²⁺ cations. X-ray crystal structures were obtained for the diprotonated ligand and its Cu²⁺ complex demonstrating pentadentate binding of the ligand with trans-II configuration of the side-bridged cyclam ring, leaving a potential labile binding site cis to the pyridine donor for interaction of the complex with oxidants and/or substrates. The electronic properties of these complexes were determined by means of solid state magnetic moment, with a low value of μ = 3.10 μ_B for the Fe²⁺ complex suggesting it has a trigonal bipyramidal coordination geometry, matching the c

SUBMITTER: Shircliff AD 

PROVIDER: S-EPMC4530784 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature