One-pot synthesis of an Mn(III)-Cu(II)-Mn(III) trinuclear heterometallic compound formed by Mn···S-Cu-S···Mn supramolecular interactions: crystal structure of [Mn^III(salph)(H₂O)₂Cu^II(mnt)₂]·4DMF

Abstract

A one-pot synthesis, that includes CuCl₂·2H₂O, Na₂mnt, H₂salph and Mn(CH₃COO)₃·H₂O, leads to the isolation of a trinuclear heterometallic compound [Mn^III(salph)(H₂O)₂Cu^II(mnt)₂]·4DMF (1) formed by Mn···S-Cu-S···Mn supramolecular interactions. Compound1 crystallizes in the monoclinic space group P21/c with α = 13·433(4), b = 16·283(5), c = 15·072(4) Å, β= 107·785(4)°, Z = 2. In the crystal structure, the complex anion [Cu^II(mnt)₂]^2- bridges two [Mn^III(salph)(H₂O)]¹⁺ cations through Mn···S contacts. The non-covalent hydrogen bonding and p-p interactions among the trinuclear [Mn^III (salph)(H₂O)₂Cu^II(mnt)₂)] complexes lead to an extended chain-like arrangement of [Mn^III(salph) (H₂O)]¹⁺ cations with [Cu^II(mnt)₂]^2- anions embedded in between these chains.