[Mn(MAC){μ1,5-N(CN)2}](PF6): a new one-dimensional coordination polymer with μ1,5-dicyanamido bridges (MAC=pentaaza macrocyclic ligand)—synthesis, crystal structure and magnetic properties
Language
en
Article de revue
This item was published in
Polyhedron. 2003, vol. 22, n° 12, p. 1611-1615
Elsevier
English Abstract
The dicyanamido-bridged manganese(II) compound, [Mn(MAC){μ1,5-N(CN)2}](PF6), (1), has been obtained by reacting [Mn(MAC)(H2O)2]Cl2·4H2O with NaN(CN)2 and NaPF6 in a 1:1:1 molar ratio (MAC=2,13-dimethyl-3,6,9,12,18-pentaa ...Read more >
The dicyanamido-bridged manganese(II) compound, [Mn(MAC){μ1,5-N(CN)2}](PF6), (1), has been obtained by reacting [Mn(MAC)(H2O)2]Cl2·4H2O with NaN(CN)2 and NaPF6 in a 1:1:1 molar ratio (MAC=2,13-dimethyl-3,6,9,12,18-pentaazabicyclo-[12.3.1]octadeca-1(18),2,12,14,16-pentaene). The structure consists of [Mn(MAC){μ1,5-N(CN)2}]n n+ infinite chains and uncoordinated PF6 − ions. The manganese ions display a pentagonal-bipyramidal geometry, with the macrocyclic ligand forming the equatorial plane. The {Mn(MAC)} units are connected through μ1,5-dicyanamido bridges (both nitrile nitrogens coordinated). The cryomagnetic investigation of 1 reveals a very weak exchange interaction between the manganese(II) ions within the chain (J=−0.49 cm−1).Read less <
English Keywords
Crystal structures
Dicyanamido-bridged complexes
Manganese complexes
Macrocyclic ligands
Magnetic properties
Origin
Hal imported