Hydrothermal syntheses, crystal structures, and magnetic properties of three manganese(II) complexes based on 4′-substituted 2,2′:6′,2″-terpyridine ligands

Three manganese coordination compounds, [Mn(Meophtpy)2] · 2ClO4 (Meophtpy = 4′-(4-methoxylphenyl)-2,2′:6′,2″-terpyridine) (I), [Mn(Ftpy)2](ClO4)2 (Ftpy = 4′-(2-furyl)-2,2′:6′,2″-terpyridine) (II) and [Mn(m-ClPhtpy)2] · 2ClO4 (m-ClPhtpy = 4′-(3-chlorophenyl)-2,2′:6′,2″-terpyridine) (III), have been synthesized by hydrothermal methods and characterized by IR, elemental analysis, powder and single-crystal X-ray diffraction analyses (CIF files CCDC nos. 945032 (I), 945033 (II), 945034 (III)). In most cases, the face-to-face interactions between pyridyl rings or phenyl rings facilitate the construction of 3D network in the crystal for all three complexes. The magnetic properties of three complexes have been investigated.