An interesting six-connected 3D nanowater framework constructed from turbine-type (H2O)(18) clusters based on a Mn(III) complex

摘要

A rare six-connected 3D nanowater framework constructed from turbine-type (H2O)(18) clusters has been observed in a Mn(III) Schiff base complex [Mn(vanen)(Cl)(H2O)] center dot 2H(2)O (1, H(2)vanen = N,N'-bis(3-methoxysalicylidene)- 1,2-diaminoethane). And each (H2O)(18) cluster includes a chair configuration cyclic hexamer and six dangling dimer water units. The nanochannels of three-dimensional ;hydrogen-bonded water network are filled by the dimer of [Mn(vanen)(Cl)(H2O)](2) molecules. Interestingly, the crystal stacking of metal complexes composed of [Mn(vanen)(Cl)(H2O)](2) shows a head-to-head turbinelike motif. Moreover, compound 1 displays strong photoluminescence in the solid state at room temperature.