The structure of the title compound, [Mn(NCS)(2)(C(6)H(8)N(2))(4)], consists of isolated mol-ecules of [Mn(NCS)(2)(Aim)(4)] (Aim = 1-allyl-imidazole), which contain a compressed octa-hedral MnN(6) chromophore (site symmetry [Formula: see text]). The NCS(-) anions are trans and four N atoms from the Aim ligands define the equatorial plane. The mean Mn-N(Aim) and Mn-N(NCS) distances are 2.270 and 2.229 Å, respectively. Weak C-H⋯N inter-actions contribute to the crystal packing stability.