title: The ferromagnetic [Ln2Co6] heterometallic complexes.
abstract: Four 3d-4f heterometallic complexes with the formula, {[Ln2Co6(OH)4(L1)6(L2)8(CH3CN)2]·nCH2Cl2} (Ln = Dy (1), n = 0.5; Ho (2), n = 1; Gd (3), n = 1; Y (4), n = 1; HL1= 6-chloro-2-pyridinol, HL2= pivalic acid), were synthesized. Single-crystal X-ray diffraction analyses revealed that complexes 1-4 consisted of a [Ln2Co6] core, featuring a Ln-Ln edge-sharing double-trigonal-bipyramid configuration. The magnetic susceptibilities revealed ferromagnetic coupling within complexes 1 and 2, and complex 1 displayed slow relaxation of magnetization.
authors.affiliation: College of Science, Sichuan Agricultural University, Ya'an 625014, China. zhaoxiaoqing@sicau.edu.cn and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China.
authors.forename: Xiao-Qing
authors.identifier: http://orcid.org/0000-0001-9675-5114
authors.initials: XQ
authors.lastname: Zhao
authors.affiliation: College of Science, Sichuan Agricultural University, Ya'an 625014, China. zhaoxiaoqing@sicau.edu.cn.
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.affiliation: College of Science, Sichuan Agricultural University, Ya'an 625014, China. zhaoxiaoqing@sicau.edu.cn.
authors.forename: Dong-Xu
authors.initials: DX
authors.lastname: Bao
authors.affiliation: College of Science, Sichuan Agricultural University, Ya'an 625014, China. zhaoxiaoqing@sicau.edu.cn.
authors.forename: Shuo
authors.initials: S
authors.lastname: Xiang
authors.affiliation: College of Science, Sichuan Agricultural University, Ya'an 625014, China. zhaoxiaoqing@sicau.edu.cn.
authors.forename: Ya-Jun
authors.initials: YJ
authors.lastname: Liu
authors.affiliation: College of Science, Sichuan Agricultural University, Ya'an 625014, China. zhaoxiaoqing@sicau.edu.cn.
authors.forename: Yun-Chun
authors.initials: YC
authors.lastname: Li