Solvothermal Synthesis,Crystal Structure and Optical Property of Lanthanide Selenidostannate [{Tb（en）_3}_2（μ-OH）_2]Sn_2Se_6 with a 3-D H-bonded Network

An inorganic-organic hybrid lanthanide selenidostannate {Tb(en)3}2(μ-OH)2]Sn2Se6(1) was synthesized by the solvothermal method.1 crystallizes in the monoclinic system,space group P21/n with a=10.120(2),b=11.781(3),c=15.403(3),β=99.534(5)°,V=1811.1(7)3,Mr=1423.62,Z=2,Dc=2.611 g/cm3,μ=11.281 mm-1,F(000)=1312,S=1.101,the final R= 0.0400 and wR=0.0853 for 3242 observed reflections with Ⅰ> 2σ(Ⅰ).1 consists of a Sn2Se6]4-and a {Tb(en)3}2(μ-OH)2]4+ ions.The Sn2Se6]4-anion is constructed by two SnSe4 tetrahedra sharing a common edge.The binuclear {Tb(en)3}2(μ-OH)2]4+ complex is composed of two Tb(en)3]3+ ions joined by two μ-OH bridging ligands.The Tb3+ ion lies in an eight-coordinated bicapped trigonal prism.In 1,the Sn2Se6]4-and {Tb(en)3}2(μ-OH)2]4+ moieties are connected into a 3-D network via N-H···Se and O-H···Se H-bonds.