Facile and environmentally friendly synthesis of six heterometallic dumbbell-shaped MII5LnIII4 (M = Co, Ni; Ln = Eu, Gd, Dy) clusters as cryogenic magnetic coolants and molecular magnets. Issue 47 (26th November 2018)

• Record Type: Journal Article
• Authors: Shao, Feng; Zhuang, Jia-Jia; Chen, Ming-Guang; Wang, Ning; Shi, Hai-Yan; Tong, Jia-Ping; Luo, Gang; Tao, Jun; Zheng, Lan-Sun
• Is Part Of: Dalton transactions. Volume 47:Issue 47(2018)
• Page Start: 16850
• Page End: 16854
• Publication Date: 2018-11-26
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c8dt04153a
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : The work demonstrates a facile and environmentally friendly synthesis of hexanuclear clusters as cryogenic magnetic coolants and molecular magnets. Abstract : Six analogous dumbbell-shaped 3d–4f complexes MII5LnIII4 were obtained by the reaction of Ln(NO3 )3 (Ln = Eu, Gd, Dy) and M(OAc)2 (M = Co, Ni) without any other organic ligands, and M5 Gd4 exhibited a large magnetocaloric effect (−Δ S m = 31.0, 37.3 J kg −1 K −1 forCo5 Gd4 andNi5 Gd4 respectively), while M5 Dy4 andCo5 Eu4 showed single molecule magnet behaviour. To the best of our knowledge, Co5 Eu4 is the first Eu-based cluster to display single molecule magnet behaviour ( U eff = 16.4 K).