Enhancing single-molecule magnet behavior of linear CoⅡ-DyⅢ-CoⅡ complex by introducing bulky diamagnetic moiety

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2018,（11）
• 页码范围: 1399-1404
• 页数: 6页
• 语种: 英文

摘要

Single-molecule magnets (SMMs) are regarded as promising candidates for ultrahigh-density storage,quantum information processing and molecular spintronics.It is a crucial challenge for chemists to modulate magnetic dynamics of SMMs.Here,we successfully synthesized two 3d-4f polynuelear compounds [Co2Dy(TTTTCl)2(MeOH)]NO3·3MeOH (1) and [Co2Dy(TTTTCl)2 (MeOH)][Co(HTTTTCl)](NO3)2·2.5MeOH·2H2O (2),where H3TTTTCl=2,2′,2″-(((nitrilotris(ethane-2,1-diyl)) tris(azanediyl))tris(methylene))tris-(4-chlorophenol).On applying the approach by co-crystallization of bulky diamagnetic moiety,the effective energy barrier enhances from 401 K (1) to 536 K (2),which are both among the highest d-f heterometallic SMMs.