Durrant James P, Tang Jinkui, Mansikkamäki Akseli, Layfield Richard A
Department of Chemistry, School of Life Sciences, University of Sussex, Brighton, BN1 9QR, UK.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5626, 130022 Changchun, China.
Chem Commun (Camb). 2020 Apr 30;56(34):4708-4711. doi: 10.1039/d0cc01722a. Epub 2020 Mar 26.
Intact transfer of the cyclobutadienyl ligand [C(SiMe)] to yttrium and dysprosium (M) produces the half-sandwich complexes [M{η-C(SiMe)}(BH)(THF)] as coordination polymers with bridging sodium or potassium ions. The dysprosium versions are single-molecule magnets (SMMs) with energy barriers of 371(7) and 357(4) cm, respectively. The pristine cyclobutadienyl ligands provide a strong axial crystal field that enhances the SMM properties relative to related cyclopentadienyl compounds.
环丁二烯基配体[C(SiMe)]完整转移至钇和镝（M）会生成半夹心配合物[M{η-C(SiMe)}(BH)(THF)]，其作为具有桥连钠或钾离子的配位聚合物。镝的配合物版本是单分子磁体（SMM），能垒分别为371(7)和357(4)厘米。原始的环丁二烯基配体提供了一个强轴向晶体场，相对于相关的环戊二烯基化合物，该场增强了单分子磁体的性质。
