By aminothermal treatment of ternary CsxHgySez phases,or of Cs_(2)Se with HgSO4,respectively,in 1,2-diaminoethane(en)and en/water mixtures at 150℃,four new cesium selenido mercurate compounds Cs_(2)[HgSe_(2)](1),[Cs_...By aminothermal treatment of ternary CsxHgySez phases,or of Cs_(2)Se with HgSO4,respectively,in 1,2-diaminoethane(en)and en/water mixtures at 150℃,four new cesium selenido mercurate compounds Cs_(2)[HgSe_(2)](1),[Cs_(2)(H_(2)O)_(2)][HgSe_(2)](2),Cs[Cs_(3)(H_(2)O)0.5][HgSe_(2)](Se_(2))(3)and Cs_(19)(Hen)(H_(2)en)(Se_(2))[HgSe_(2)]_(2)[HgSe3][Hg_(2)Se_(5)]_(2)(4)were synthesized.The precursor phases were prepared by fusion of Cs_(2)Se and HgSe at 600℃.2 comprises an unprecedented 1D anionic selenido mercurate substructure.3 and 4 are rare examples of mercurate compounds with different anions,one of which comprises a new type of a dinuclear chalcogenido mercurate anion.The structures of all four compounds were identified by single crystal X-ray diffraction.Micro X-ray fluorescence spectroscopy(μ-XFS)was used to confirm the heavy atom compositions,and optical absorption measurements were performed to determine the optical band gaps.展开更多
基金supported by the Deutsche Forschungsgemeinschaft(DFG)within the framework of SPP1708.
文摘By aminothermal treatment of ternary CsxHgySez phases,or of Cs_(2)Se with HgSO4,respectively,in 1,2-diaminoethane(en)and en/water mixtures at 150℃,four new cesium selenido mercurate compounds Cs_(2)[HgSe_(2)](1),[Cs_(2)(H_(2)O)_(2)][HgSe_(2)](2),Cs[Cs_(3)(H_(2)O)0.5][HgSe_(2)](Se_(2))(3)and Cs_(19)(Hen)(H_(2)en)(Se_(2))[HgSe_(2)]_(2)[HgSe3][Hg_(2)Se_(5)]_(2)(4)were synthesized.The precursor phases were prepared by fusion of Cs_(2)Se and HgSe at 600℃.2 comprises an unprecedented 1D anionic selenido mercurate substructure.3 and 4 are rare examples of mercurate compounds with different anions,one of which comprises a new type of a dinuclear chalcogenido mercurate anion.The structures of all four compounds were identified by single crystal X-ray diffraction.Micro X-ray fluorescence spectroscopy(μ-XFS)was used to confirm the heavy atom compositions,and optical absorption measurements were performed to determine the optical band gaps.
