Homo- and heterometallic coordination networks based on linear trinuclear Co(ii) units: Syntheses, structures and magnetic properties

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/104951

Title:	Homo- and heterometallic coordination networks based on linear trinuclear Co(ii) units: Syntheses, structures and magnetic properties
Authors:	楊仲準;Huang, Wun-Jhih;Hsu, Chia-Ju;Tsai, Shao-Kang;He, Hsiu-Yi;Ding, Jaw-Jih;Hsu, Ting-Wei;Yang, Chun-Chuen;Chen, Jhy-Der
Contributors:	理學院物理學系
Keywords:	cobalt;dicarboxylic acids;ferrimagnetic materials;geometry;ligands;magnetic properties;paramagnetism;topology;X-ray diffraction
Date:	2015-01-01
Issue Date:	2026-04-23 12:02:19 (UTC+8)
Publisher:	Royal Society of Chemistry
Abstract:	摘要： Two three-dimensional (3D) coordination networks, [Co 3 (1,4-BDC)3( L 1 )] ( L 1 = N , N -bis(3-pyridinyl)-1,4-benzenedicarboxamide; 1,4-H 2 BDC = 1,4-benzenedicarboxylic acid), 1 , and [K 2 Co 3 ( L 2 ) 4 ] (H 2 L 2 = 5-acetamidoisophthalic acid), 2 , have been synthesized by hydrothermal reactions and characterized by single crystal X-ray crystallography. Complex 1 consists of linear trinuclear Co( ii ) centers, which are linked by the 1,4-BDC and L 1 ligands to form a rare (1 + 3) self-catenated 3D net with the new (3 6 ,4 10 ,5 11 ,6) topology, and complex 2 reveals a 3p3d heterometallic coordination network based on linear trinuclear Co( ii ) and dinuclear K( i ) centers bridged by the 6 - L 2 ligands, forming a 4,4,8-connected trinodal net with the new (4 14 6 10 8 4 )(4 2 6 4 )(4 4 6 2 ) topology. The linear trinuclear Co( ii ) centers in 1 adopt the square pyramidaloctahedralsquare pyramidal geometries, whereas those in 2 are tetrahedraloctahedraltetrahedral. Both of the complexes exhibit paramagnetism that is consistent with the CurieWeiss law between 60 and 300 K. The effective magnetic moments (〈 eff 〉) of both complexes are larger than the estimated value of 6.71 B /f.u., revealing the spinorbit couplings that are invoked by the different distorted geometries of the linear trinuclear Co( ii ) centers. The dinuclear K( i ) centers in 2 weaken the magnetic coupling, and reduce the antiferromagnetic ordering at 6 K. The syntheses, structures and magnetic properties of a (1 + 3) self-catenated homometallic 3D net with the (3 6 ,4 10 ,5 11 ,6) topology and a 3p3d heterometallic 3D net showing the (4 14 6 10 8 4 )(4 2 6 4 )(4 4 6 2 ) topology are reported. 出版日期： 2015-01-01 出處： RSC advances, 2015-01, Vol.5 (3), p.23374-23382 資源來源： Royal Society of Chemistry 識別號： ISSN: 2046-2069 識別號： EISSN: 2046-2069 識別號： DOI: 10.1039/c5ra00728c
Appears in Collections:	[Department of Physics] journal & Dissertation

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