Abstract
A one-dimensional (1-D) selenidostannate, [AEPPH2]2[Sn5Se12] (AEPP=N-aminoethylpiperazine) (1), has been prepared under solvothermal condition and characterized. Single crystal X-ray analysis reveals that compound 1 crystallizes in the triclinic space group P-1, a=10.6351(7) Å, b=10.6850(7) Å, c=10.7771(7) Å, α=61.3440(10)°, β=62.4420(10)°, γ=67.4680(10). With distinct linkage modes between SnSe4 tetrahedrons and SnSe6 octahedrons, a secondary building unit (SBU) [Sn5Se14] is formed. Compound 1 contains infinite bead-like chains built up by the [Sn5Se14] SBUs, and the protonated [AEPPH2]2+ cations are located between the chain spaces. A pseudo 3-D network is formed through C–H···Se and N–H···Se hydrogen bonds between adjacent chains. Its optical property and theoretical band structure and density of state (DOS) calculations have also been studied.
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