Title of article :
A dimanganese(II) complex with bridging chlorides: Synthesis, electrochemistry, magnetic behavior, structure and bonding
Author/Authors :
Br?uer، نويسنده , , Bj?rn and Schaarschmidt، نويسنده , , Dieter and Flohrer، نويسنده , , Claudia and Rüffer، نويسنده , , Tobias and Tripke، نويسنده , , Sascha and Hildebrandt، نويسنده , , Alexander and Walfort، نويسنده , , Bernhard and Sorace، نويسنده , , Lorenzo and Lang، نويسنده , , Heinrich، نويسنده ,
Abstract :
The synthesis of dimeric [Mn2Cl2(μ-Cl)2(dipa)2]·MeOH (3) (dipa = dipyridylmethylamine) from [MnCl2(H2O)4] (1) and dipa (2) and its structural characterization is reported. In the solid state complex 3 is dimeric and possesses crystallographically imposed C2 symmetry, which differs from similar dimanganese(II) complexes showing an inversion symmetry for the central Mn(μ-Cl)2Mn arrangement. Each manganese atom is thereby bound by three nitrogen atoms from a facially coordinated dipa ligand, and three chlorides (1 terminal and 2 μ-bridging) in an octahedrally distorted fashion.
lovoltammogram of 3 displays that the two manganese(II) ions can independently be oxidized. The magnetic properties of 3 were determined by susceptibility measurements versus temperature. The intramolecular J parameter was determined to a value of J = (−5.2 ± 0.5) cm−1.
Keywords :
MAGNETIC , susceptibility , Solid state structure , Manganese , chloride , Electrochemistry
