Incorporation of a new type of transition metal complex into the thioarsenate anion: syntheses, structures, and properties of two novel compounds [Mn3(2,2'-bipy)3(AsVS4)2]n.nH2O and Mn2(2,2'-bipy)As2IIIS5.
The incorporation of [Mn(2,2'-bipy)2]2+ with thioarsenate resulted in the formation of two novel compounds, [Mn3(2,2'-bipy)3(As(V)S4)2]n.nH2O (1) and Mn2(2,2'-bipy)As2(III)S5 (2), in which the main-group chalcogenide framework is incorporated with a [tm(2,2'-bipy)m]n+ complex. Meanwhile, the tetrathioarsenate(V) anion acts as a new mu3-1kappaS:1,2kappaS':2,3kappaS":3kappaS'" ligand in 1, in which all four S atoms of the [As(V)S4]3- anion are coordinating to metal. As a result, the two compounds exhibit semiconducting properties (Eg = 2.18 eV (1) and 1.83 eV (2)) and strong blue photoluminescence, with the emission maximum occurring at about 440 nm. Magnetic measurements show that both compounds have AF ordered states with Néel temperatures of 19 and 24 K for 1 and 2, respectively.
Fu
Ming-Lai
ML
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China.
Guo
Guo-Cong
GC
Liu
Xi
X
Chen
Wen-Tong
WT
Liu
Bing
B
Huang
Jin-Shun
JS