Two new zincoborates,namely,Pb_(3)Ba_(3)Zn_(6)(BO_(3))_(8)andα-BaZn_(2)(BO_(3))_(2),were synthesized by the hightemperature solution method and their structures were determined by single-crystal X-ray diffraction for...Two new zincoborates,namely,Pb_(3)Ba_(3)Zn_(6)(BO_(3))_(8)andα-BaZn_(2)(BO_(3))_(2),were synthesized by the hightemperature solution method and their structures were determined by single-crystal X-ray diffraction for the first time.The structure of Pb_(3)Ba_(3)Zn_(6)(BO_(3))_(8)can be described as a three-dimensional framework consisting of[Zn_(4)B_(2)O_(15)]_(∞)chains and isolated ZnO_(4)tetrahedra and BO_(3)triangles,which contains three different types of tunnels with Pb_(2)+and Ba^(2+)cations residing among them.α-BaZn_(2)(BO_(3))_(2)exhibits a twodimensional layered structure with a[Zn_(2)B_(2)O_(6)]layer,which is formed by[ZnBO_(4)]chains and[Zn_(2)B_(2)O_(8)]chains.Interestingly,both Pb_(3)Ba_(3)Zn_(6)(BO_(3))_(8)andα-BaZn_(2)(BO_(3))_(2)both contain two different dimensional Zn-O configurations in their structures,which has not been found in other zincoborates.In addition,thermal property analysis,and UV-vis-NIR diffuse reflectance and infrared spectroscopy were also performed.First-principles theoretical studies were also conducted to aid the understanding of their band structures and densities of states.展开更多
基金supported by National Natural Science Foundation of China(Grant No.51972230 and 61975096)Research and Free Exploration Project of Shenzhen City(Grant No.JCYJ20180305164316517)Natural Science Foundation of Shandong Province(Grant No.ZR2017MF031).
文摘Two new zincoborates,namely,Pb_(3)Ba_(3)Zn_(6)(BO_(3))_(8)andα-BaZn_(2)(BO_(3))_(2),were synthesized by the hightemperature solution method and their structures were determined by single-crystal X-ray diffraction for the first time.The structure of Pb_(3)Ba_(3)Zn_(6)(BO_(3))_(8)can be described as a three-dimensional framework consisting of[Zn_(4)B_(2)O_(15)]_(∞)chains and isolated ZnO_(4)tetrahedra and BO_(3)triangles,which contains three different types of tunnels with Pb_(2)+and Ba^(2+)cations residing among them.α-BaZn_(2)(BO_(3))_(2)exhibits a twodimensional layered structure with a[Zn_(2)B_(2)O_(6)]layer,which is formed by[ZnBO_(4)]chains and[Zn_(2)B_(2)O_(8)]chains.Interestingly,both Pb_(3)Ba_(3)Zn_(6)(BO_(3))_(8)andα-BaZn_(2)(BO_(3))_(2)both contain two different dimensional Zn-O configurations in their structures,which has not been found in other zincoborates.In addition,thermal property analysis,and UV-vis-NIR diffuse reflectance and infrared spectroscopy were also performed.First-principles theoretical studies were also conducted to aid the understanding of their band structures and densities of states.
