Solvothermal Synthesis and Characterzation of (1,4-DABH2)Cd2Sb2S6 with Layer Structure

A multiple thioantimonate compound, (1,4-DABH(2))Cd(2)Sb2(S6) (1) (1,4-DAB=1,4-diaminobutane), was solvothermally synthesized at 160 degrees C and characterized by IR and TGA. Its crystal structure analysis reveals the compound was determined by single crystal X-ray diffraction. The crystal structure is orthorhombic in the space group Cmca. Crystallographic data: M-r=750.77, a=0.860 3(5) nm, b=0.898 7(6) nm, c=2.273(2) nm, V=1.758(2) nm(3), Z=4, lambda=0.071 073 nm, R=0.032 0, wR=0.106 7. The compound features two-dimensional (2D) grid layer of [CdSbS3](n)(n-) with six-membered Cd2SbS3 rings and eight-membered Cd2Sb2S4 rings. The doubly protonated organic cations are located at the interlayer spaces of [CdSbS3](n)(n-) and form extensive N-H center dot center dot center dot S hydrogen bonds. In addition, UV-Vis diffusion reflectance spectra suggest that the compound is semiconductor with estimated band gap 2.10 eV. CCDC: 879803.