Cyclic Triradicals Composed of Iminonitroxide–Gold(I) with Intramolecular Ferromagnetic Interactions. Issue 36 (4th August 2016)

• Record Type: Journal Article
• Authors: Suzuki, Shuich; Wada, Tomoyuki; Tanimoto, Ryu; Kozaki, Masatoshi; Shiomi, Daisuke; Sugisaki, Kenji; Sato, Kazunobu; Takui, Takeji; Miyake, Yota; Hosokoshi, Yuko; Okada, Keiji
• Is Part Of: Angewandte Chemie international edition. Volume 55:Issue 36(2016)
• Page Start: 10791
• Page End: 10794
• Publication Date: 2016-08-04
• Subjects: gold -- magnetic properties -- radicals -- silver -- structure elucidation; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201604320
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: A triangular gold(iminonitroxide‐2‐ide) trimer complex (5 ) was prepared and investigated to determine its magnetic properties. The results showed that the metalloid triradical is highly stable, even in solution under aerated conditions. The intramolecular exchange interaction of5 was found to be positive ( J intra / k B ≈+29 K), thus showing that5 is in a quartet ground state. In addition, a silver sandwich complex (5 ‐Ag + ‐5 ) was prepared and its electronic and magnetic properties were also clarified. Abstract : Triangulation : An open‐shell iminonitroxide/gold(I) trimer complex was prepared. The intramolecular exchange interaction between the iminonitroxide moieties was found to be positive ( J intra / k B ≈+29 K). This quartet iminonitroxide/gold complex produced an intercalated silver(I) complex with a ferromagnetic interaction ( J intra / k B ≈+25 K) for the trimer unit.