| 镉汞四元硒化物K8Cd2.79Hg9.21Se16和Rb4Hg3.04Cd2.96Se8的溶剂热合成及表征 |
| Solvothermal Synthesis and Characterization of Quaternary Selenides K8Cd2.79Hg9.21Se16 and Rb4Hg3.04Cd2.96Se8 Containing Cadmium and Mercury |
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| 摘要: 利用溶剂热法合成了2种含镉汞的二维（2D）四元硒化物K8Cd2.79Hg9.21Se16（1）和Rb4Hg3.04Cd2.96Se8（2）。单晶X射线衍射分析表明，化合物1为正交晶系，空间群为Pbcn，a=1.082 71（17）nm，b=0.678 73（10）nm，c=1.415 0（2）nm，Z=1；化合物2为正交晶系，空间群为Ibam，a=0.640 72（10）nm，b=1.160 25（16）nm，c=1.452 0（2）nm，Z=2。化合物1中含有八元环Cd2Hg2Se4和六元环CdHg2Se3阴离子层（Cd2.79Hg9.21Se16）n8n-；化合物2中含有八元环Cd2（Cd/Hg）2Se4及四元环CdHgSe2和（Cd/Hg）2Se2阴离子层（Hg3.04Cd2.96Se8）n4n-。对这2种化合物进行了扫描电镜和能谱分析、粉末X射线衍射、差示扫描量热分析、固体-可见漫反射光谱和荧光性质等表征。 |
| 关键词: 四元硒化物 溶剂热合成 晶体结构 荧光性质 |
| 基金项目: 国家自然科学基金（No.21461019），内蒙古自治区自然科学基金（No.2016MS0225）和研究生科研创新基金（No.CXJJS18081）资助项目。 |
| Abstract: Two-dimensional (2D) quaternary selenides containing cadmium mercury, K8Cd2.79Hg9.21Se16 (1) and Rb4Hg3.04Cd2.96Se8 (2), were synthesized utilizing solvothermal method. Single crystal X-ray analyses reveal that compound 1 crystallizes in the orthorhombic space group Pbcn, with a=1.082 71(17) nm, b=0.678 73(10) nm, c=1.415 0(2) nm, Z=1; compound 2 crystallizes in the orthorhombic space group Ibam, with a=0.640 72(10) nm, b=1.160 25(16) nm, c=1.452 0(2) nm, Z=2. Compound 1 contains anion layer (Cd2.79Hg9.21Se16)n8n- of eight-membered ring Cd2Hg2Se4 and six-membered ring CdHg2Se3. Compound 2 contains anion layer (Hg3.04Cd2.96Se8)n4n- of eight-membered ring Cd2(Cd/Hg)2Se4, four-membered ring CdHgSe2 and (Cd/Hg)2Se2. These two compounds were structurally characterized by scanning electron micrograph and energy-dispersive X-ray spectroscopy analysis, powder X-ray diffraction measurement, thermal analysis, solid-state optical diffuse reflectance and fluorescence properties. |
| Keywords: quaternary selenides solvothermal synthesis crystal structure fluorescence properties |
| 投稿时间：2019-07-29 修订日期：2020-01-07 |
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| 玲玲,姜祺琪,白音孟和.镉汞四元硒化物K8Cd2.79Hg9.21Se16和Rb4Hg3.04Cd2.96Se8的溶剂热合成及表征[J].无机化学学报,2020,36(5):811-818. |
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| Support information: 相关附件： file190373_190373_Supporting_Information_.doc |
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