Tian Xinyu, Teri Gele, Shele Muge, E Namila, Qi Liming, Liu Min, Baiyin Menghe
Inner Mongolia University Key Laboratory of Advanced Materials Chemistry and Devices (AMC&DLab), College of Chemistry & Environmental Science, Inner Mongolia Normal University, Hohhot, China.
Front Chem. 2022 May 5;10:890496. doi: 10.3389/fchem.2022.890496. eCollection 2022.
Four selenoarsenates with different transition-metal complexes [Co(tren)H]AsSe [tren = tris(2-aminoethyl)amine] (); Ni(dien) (dien = diethylenetriamine) (); Zn(tren) () and Mn(tren) () were solvothermally synthesized in a mixed solvent of organic amine and alcohol solution. The compounds have pyramidal/tetrahedral structures (AsSe/AsSe), and contain transition metal (Co, Ni, Zn and Mn) complex that form distinct zero-dimensional (0-D) clusters. Arsenic atoms form a tetrahedron in compounds and ; consists of discrete tetrahedral (AsSe) and transition metal complex [Co(tren)]; is composed of an anion [AsSe] cluster and transition metal complex [Ni(dien)]. In compounds and , arsenic atom forms a pyramidal AsSe and the two pyramidal AsSe share a corner connection to form a dimer [AsSe]; is characterized as a cluster consisting of two unsaturated [Zn(tren)] caiton linked by a dimer (AsSe) linkage; in , unsaturated [Mn(tren)] caiton is linked to two trigonal-bipyramidal [Mn(tren)]Se via dimer (AsSe) to form [Mn(tren)][AsSe] cluster. To our knowledge, Zn(tren) () is the first zinc selenoarsenate containing the (AsSe) anion type. Furthermore, the Mn ions adopt a trigonal-biyramidal (five-coordinate) and octahedral (six-coordinate) environment. Adding KCO/CsCO to the synthesis system is necessary and may act as a mineralizer. Several properties of compounds - have been characterized in our studies, in particular their strong photocurrent response characteristics under visible light irradiation.
在有机胺和醇溶液的混合溶剂中,通过溶剂热法合成了四种具有不同过渡金属配合物的亚硒砷酸盐:[Co(tren)H]AsSe [tren = 三(2 - 氨乙基)胺] (); Ni(dien) (dien = 二乙烯三胺) (); Zn(tren) () 和 Mn(tren) ()。化合物 具有金字塔形/四面体结构(AsSe/AsSe),并包含形成独特零维(0 - D)簇的过渡金属(Co、Ni、Zn 和 Mn)配合物。在化合物 和 中,砷原子形成四面体; 由离散的四面体(AsSe)和过渡金属配合物[Co(tren)]组成; 由阴离子[AsSe]簇和过渡金属配合物[Ni(dien)]组成。在化合物 和 中,砷原子形成金字塔形的 AsSe,两个金字塔形的 AsSe 共享一个角连接形成二聚体[AsSe]; 的特征是由通过二聚体(AsSe)连接的两个不饱和[Zn(tren)]阳离子组成的簇;在 中,不饱和[Mn(tren)]阳离子通过二聚体(AsSe)与两个三角双锥[Mn(tren)]Se 相连,形成[Mn(tren)][AsSe]簇。据我们所知,Zn(tren) () 是第一种含有(AsSe)阴离子类型的锌亚硒砷酸盐。此外,Mn 离子采用三角双锥(五配位)和八面体(六配位)环境。向合成体系中添加 KCO/CsCO 是必要的,并且可能起到矿化剂的作用。我们的研究对化合物 - 的几种性质进行了表征,特别是它们在可见光照射下的强光电流响应特性。