Solvothermal synthesis,crystal structure and properties of Mn2(tren)3[Mo2O2S6]2·1.3H2O exhibiting the new polymeric [Mn2(tren)3] n 4+ chain

The novel oxothiomolybdate Mn₂(tren)₃Mo₂O₂S₆]₂·1.3H₂O tren = tris(2-aminoethyl)amine], synthesized under solvothermal conditions, consists of one-dimensional novel Mn₂(tren)₃] _n ⁴⁺ chains and discrete Mo₂O₂S₆]^2– anions. There are two crystallographically independent chains and four Mo₂O₂S₆]^2– anions in the asymmetric unit. Each Mn atom in the cationic chains is sixfold coordinated by N atoms of the chelating tren molecules. Two of the four crystallographically independent Mn atoms are tridentately coordinated by two tren molecules, whereas the other two are coordinated tetradentately by one tren molecule and monodentately by the remaining primary amino groups from the tren molecules that act as tridentate ligands. The tren ligand bonding modes lead to the formation of the polymeric Mn₂(tren)₃] _n ⁴⁺ chain. One of the four Mn atoms is in the unusual trigonal prismatic coordination state with six surrounding N atoms.