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。
Two-dimensional(2 D) quaternary selenides containing cadmium mercury,K8 Cd2.79Hg9.21Se16(1) and Rb4 Hg3.04Cd2.96Se8(2),were synthesized utilizing solvothermal method.Single crystal X-ray analyses reveal that compound 1 crystallizes in the orthorhombic space group Pbcny 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)n8 n- of eight-membered ring Cd2 Hg2Se4 and six-membered ring CdHg2Se3.Compound 2 contains anion layer(Hg3.04Cd2.96Se8)n4 n- of eightmembered ring Cd2(Cd/Hg)2 Se4,four-membered ring CdHgSe2 and(Cd/Hg)2 Se2.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.CCDC:1939730,1;1939729,2.
作者
玲玲
姜祺琪
白音孟和
LING Ling;JIANG Qi-Qi;BAIYIN Meng-He(College of Chemistry&Environmental Science,Innner Mongolia Normal University,Hohhot 010022,China)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2020年第5期811-818,共8页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.21461019)
内蒙古自治区自然科学基金(No.2016MS0225)
研究生科研创新基金(No.CXJJS18081)资助项目。
关键词
四元硒化物
溶剂热合成
晶体结构
荧光性质
quaternary selenides
solvothermal synthesis
crystal structure
fluorescence properties
