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

✍ Scribed by Chao Wang; Yue Ma; Xi Yang; Shiping Yan; Daizheng Liao

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
202 KB
Volume
28
Category
Article
ISSN
0256-7660

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✦ Synopsis

Abstract

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.

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