A new type of multifunctional single ionic dysprosium complex based on chiral salen-type Schiff base ligand

作者：Sui, Yan^*; Fang, Xiao-Niu; Hu, Rong-Hua; Li, Jia; Liu, Dong-Sheng

来源：Inorganica Chimica Acta, 2014, 423: 540-544.

DOI：10.1016/j.ica.2014.09.015

• (1R,2R)-1,2-cyclohexylenediamine
• Schiff base
• Dysprosium complex
• Ferroelectric
• Luminescence

A new type of multifunctional single ionic chiral dysprosium complex (DyL) was obtained by the reaction of Dy(NO3)(3) and salen-type Schiff base ligand N,N'-bis(3,5-dichlorosalicylidene)-(1R,2R)-1,2-cyclohexylenediamine. In the synthesis reaction, Dy(III) was found not only to be the central metal to coordinate with two Schiff base ligands, but also the Lewis acid catalyst to promote the partial decomposition of salen-type Schiff base ligand. Complex DyL crystallizes in a chiral and polar space group P2(1). The central metal Dy(III) adopts eight-coordinated square antiprism geometry with Delta absolute configuration. Complex DyL exhibits good SHG and ferroelectric properties. The single-crystal sample of DyL displays an obvious ferroelectric behavior with a remnant polarization (P-r) of ca. 4.51 mu C cm (2) and E-c of ca. 28.11 kV cm (1). The solid luminescent spectrum of DyL presents characteristic emission F-4(9/2) -> H-6(15/2) and F-4(9/2) -> H-6(13/2) transitions of Dy(III).

• 出版日期2014-11-1
• 单位井冈山大学; 中国科学院长春应用化学研究所