Rational design of a covalently tethered dinuclear [MnII(N3O2)Cl(OH2)]2(2+) macrocyclic building block: synthesis, structure, and magnetic properties.
A novel dimeric MnII complex {[Mn(N3O2)]Cl(OH2)}(2)2Cl (2) of a macrocyclic Schiff base ligand derived from the condensation of 2,2',6,6'-tetraacetyl-4,4'-bipyridine with 3,6-dioxaoctane-1,8-diamine in the presence of a stoichiometric amount of MnII has been prepared and characterized. The X-ray analysis of 2 reveals that the two Mn ions assume a pentagonal-bipyramidal geometry, with the macrocycle occupying the pentagonal plane and the axial positions being filled by a halide ion and a H2O molecule. Magnetic susceptibility data (2-270 K) reveal the occurrence of weak antiferromagnetic interactions between covalently tethered MnII-MnII dimeric units.
Wang
Jian
J
Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, L2S 3A1 Ontario, Canada.
Slater
Brianna
B
Alberola
Antonio
A
Stoeckli-Evans
Helen
H
Razavi
Fereidoon S
FS
Pilkington
Melanie
M