[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 - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Polyhedron Année : 2003

[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

Résumé

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).

Dates et versions

hal-00199780 , version 1 (19-12-2007)

Identifiants

Citer

Carmen Paraschiv, Jean-Pascal Sutter, Marc Schmidtmann, Achim Müller, Marius Andruh. [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. Polyhedron, 2003, 22 (12), pp.1611-1615. ⟨10.1016/S0277-5387(03)00283-3⟩. ⟨hal-00199780⟩

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