A Ladder-like One-dimensional Chain Based on a New Biradical and Cu-II: Crystal Structure and Magnetic Properties

作者：Wang Chao; Ma Yue; Yang Xi; Yan Shiping; Liao Daizheng^*

来源：Chinese Journal of Chemistry, 2010, 28(9): 1593-1599.

DOI：10.1002/cjoc.201090270

• copper
• biradical
• magnetic properties
• crystal structures

A new biradical di(4-(1'-oxyl-3'-oxido-4', 4', 5', 5'-tetramethyl-4', 5'-dihydro-1' H-imidazol-2'-yl) phenyl) ether (1) and its copper complex 2 were synthesized and characterized structurally. The X-ray structure determination revealed that, the complex is in the triclinic P-1 space group and displays a ladder-like structure. Each copper atom is surrounded by four oxygen atoms from hexafluoroacetylacetone and two oxygen atoms from biradical. The magnetic measurements show that biradical 1 exhibits a weak intramolecular nitroxide-nitroxide antiferromagnetic coupling and copper complex 2 possesses weak ferromagnetic coupling (J=5.09 cm(-1)) between Cu-II and radical, which attributed to interaction between copper spin and the axially coordinated nitronyl nitroxide spin.

• 出版日期2010-9
• 单位南开大学