Homoleptic manganese(II)–azide layer: Synthesis, structural characterization and magnetic properties

Synthesis of anST= 7 [Mn3] Mixed-Valence Complex Based on 1,3-Propanediol Ligand Derivatives and Its One-Dimensional Assemblies

“…As expected, the S T = 7 ground state of the [Mn III Mn II 2 L 2 X 4 ] + complex, induced by the ferromagnetic Mn II –Mn III interactions ( J 1 ), is preserved in these three chains and moreover almost unaffected by the azido coordination or the different used halide anions and ligands. On the other hand, estimations of the antiferromagnetic Mn II –Mn II interactions (from −3 to −4.1 K) through the end–end azido groups are in excellent agreement with the previously reported values (from −1.5 to −8 K) . As already mentioned, the magnetic susceptibility for 3∞ and 4∞ follows very well, down to 1.8 K, the expected properties of spin chains, but in the case of 2∞ , a clear departure from the one-dimensional property is observed below 20 K. Therefore, ac susceptibility measurements were performed at low temperature to detect a possible magnetic phase transition in 2∞ .…”

Preparation of the First Manganese(III) and Manganese(IV) Azides

“…The Vis [3] and IR spectra [4] were reported more than 50 years later. Salts containing the [Mn(N 3 ) 4 ] 2À ion [3,5] have been prepared and the crystal structures of [PPh 4 ] 2 [Mn(N 3 ) 4 ] [6] and [MV][Mn(N 3 ) 4 ] [7] (MV = methylviologen) have been determined. In addition, several mangane-se(II) coordination polymers with azido ligands have been reported and characterized structurally: [MeNH 4Àx ] [Mn(N 3 ) 3 ], [8] Cs[Mn(N 3 ) 3 ], [9] [NEt 4 ][Mn 2 (N 3 ) 5 (H 2 O)], [9] Mn(N 3 ) 2 (L)(H 2 O) 3 [10] (L = organic ligand) , Mn 4 (L) 2 (N 3 ) 8 , [11] [Mn 2 (L) 2 (N 3 ) 2 ][Mn(N 3 ) 4 (H 2 O) 2 ]·2 H 2 O, [11] and [Mn(L)(N 3 ) 2 ] 2 [Mn(H 2 O) 2 (N 3 ) 2 ].…”