Playing with [{(Mo6Br6Se2i)-Se-i}(CN)(a)(6)](4-) Cluster Building Blocks and Mn(salen)(+) Nodes for the Crystal Engineering of Inorganic Coordination Polymers
Résumé
We present here the syntheses and structural characterizations of inorganic polymeric cluster compounds, Cs[Mn(salen)](3)[{Mo6Br6Se2}(CN)(6)] (1) and (H3O)(TBA)[Mn(salen)](2)[{Mo6Br6Se2}(CN)(6)] (2) (TBA=tetrabutylammonium ((n-C4H9)(4)N+)), built-up from [{Mo6Br6Se2}(CN)(6)](4-) molecular building blocks and Mn(salen)(+) complexes (salen = salen = N,N '-bis(salicylidene)ethylenediamine). The nature of additional counter cations (i. e. Cs+ or TBA(+)) enables to control the interactions between the [{Mo6Br6Se2}(CN)(6)](4-) building blocks and the Mn(salen)(+) groups. Thus, 1 was obtained by slow diffusion of a methanol solution of K2Cs2[{Mo6Br6Se2}(CN)(6)] cluster compound into a methanol solution of Mn(salen)ClO4. 2 was obtained in a similar way but after the addition of tetrabutylammonium bromide into the solution of Mn(salen)ClO4. 1 is a bimetallic 3D coordination compound ( R3?c ${R\bar{3}c}$ ) and 2 is a bimetallic 2D compound ( P1? ${P\bar{1}}$ ). Structural correlations between 1 and 2 are discussed and compared with relevant examples found in the literature.