Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University, Suzhou, 215123, People's Republic of China.
Dalton Trans. 2011 Mar 21;40(11):2631-7. doi: 10.1039/c0dt01424a. Epub 2011 Feb 4.
Two systems, Ln/Sn/Se/en and Ln/Sn/Se/dien, were investigated under solvothermal conditions, and novel lanthanide selenidostannates [{Ce(en)(4)}(2)(μ-Se(2))]Sn(2)Se(6) (1a), [{Ln(en)(3)}(2)(μ-OH)(2)]Sn(2)Se(6) (Ln = Pr(1b), Nd(1c), Gd(1d); en = ethylenediamine), {Ln(dien)(2)}(4)(μ(4)-Sn(2)Se(9))(μ-Sn(2)Se(6)) (Ln = Ce(2a), Nd(2b)), and [Hdien][Gd(dien)(2)(μ-SnSe(4))] (2c) (dien = diethylenetriamine) were prepared and characterized. Two structural types of lanthanide selenidostannates were obtained across the lanthanide series in both systems. In the Ln/Sn/Se/en system, two types of binuclear lanthanide complex cations Ce(2)(en)(8)(μ-Se(2)) and {Ln(en)(3)}(2)(μ-OH)(2) (Ln = Pr, Nd, Gd) were formed depending on the Ln(3+) ions. The complex cations are compensated by the Sn(2)Se(6) anions. In the Ln/Sn/Se/dien system, coordination polymer {Ln(dien)(2)}(4)(μ(4)-Sn(2)Se(9))(μ-Sn(2)Se(6)) and ionic complex [Hdien][Gd(dien)(2)(μ-SnSe(4))] are obtained along the lanthanide series, among which the μ(4)-Sn(2)Se(9), μ-Sn(2)Se(6) and μ-SnSe(4) ligands to the Ln(3+) ions were observed. The formation of title complexes shows the effects of lanthanide metal size and amino ligand denticity on the lanthanide selenidostannates. Complexes 1a-2c exhibit semiconducting properties with band gaps between 2.08 and 2.48 eV.
在溶剂热条件下研究了两个系统，Ln/Sn/Se/en 和 Ln/Sn/Se/dien，并合成了新型镧系元素硒化锡酸盐 [{Ce(en)(4)}(2)(μ-Se(2))]Sn(2)Se(6) (1a)、[{Ln(en)(3)}(2)(μ-OH)(2)]Sn(2)Se(6) (Ln = Pr(1b)、Nd(1c)、Gd(1d)；en = 乙二胺)、{Ln(dien)(2)}(4)(μ(4)-Sn(2)Se(9))(μ-Sn(2)Se(6)) (Ln = Ce(2a)、Nd(2b))和 [Hdien][Gd(dien)(2)(μ-SnSe(4))] (2c) (dien = 二乙烯三胺)。在这两个系统中，横跨镧系元素系列获得了两种结构类型的镧系元素硒化锡酸盐。在 Ln/Sn/Se/en 体系中，根据 Ln(3+)离子的不同，形成了两种类型的双核镧系元素配合物阳离子 Ce(2)(en)(8)(μ-Se(2))和{Ln(en)(3)}(2)(μ-OH)(2) (Ln = Pr、Nd、Gd)。配合物阳离子由 Sn(2)Se(6)阴离子补偿。在 Ln/Sn/Se/dien 体系中，沿镧系元素系列得到了配位聚合物 {Ln(dien)(2)}(4)(μ(4)-Sn(2)Se(9))(μ-Sn(2)Se(6))和离子复合物 [Hdien][Gd(dien)(2)(μ-SnSe(4))]，其中观察到 μ(4)-Sn(2)Se(9)、μ-Sn(2)Se(6)和 μ-SnSe(4)配体与 Ln(3+)离子配位。标题配合物的形成表明了镧系金属尺寸和氨基配体齿合度对镧系元素硒化锡酸盐的影响。配合物 1a-2c 表现出半导体性质，带隙在 2.08 到 2.48 eV 之间。
