https://scholars.lib.ntu.edu.tw/handle/123456789/624036
標題: | Two polymeric linear tri-nickel(II) complexes: [Ni3(μ3-dpa)4(C4O 4Me)]n(BF4)n and [Ni3(μ3-dpa)4(N3)] n(PF6)n synthesis, structural characterization and magnetic properties | 作者: | Peng C.-H. Wang C.-C. Lee H.-C. Lo W.-C. Lee G.-H. CHI-HOW PENG |
關鍵字: | Anti-ferromagnetic interaction;Metal-metal interaction;Polymeric trinickel complex | 公開日期: | 2001 | 卷: | 48 | 起(迄)頁: | 987-996 | 來源出版物: | Journal of the Chinese Chemical Society | 摘要: | Two new linear tri-nickel(II) complexes with an infinite polymeric chain, [Ni3(μ3-dpa)4(C4O 4Me)](BF4) 1 and [Ni3(μ3-dpa)4(N3)](PF 6) 2, [dpa- = di(α-pyridyl)amido anion], have been synthesized and their structures were determined by X-ray diffraction. Compound 1 crystallizes in the monoclinic system, space group C 2/c, with a = 19.9078(3), b = 13.2986(2), c = 37.6622(5) Å, β= 94.091(1)°, Z = 8. Compound 2 crystallizes in the monoclinic system, space group P 21/n, with a = 13.323(4), b = 23.217(3), c = 17.528(5) Å, β= 94.42(3)°, Z = 4. The two complexes are described as one-dimensional systems with the (C4O4Me)-, 1, or N3-, 2, serving as a μ-(1,3) bridged ligand at the two axial sites of each [Ni3(μ3-dpa)4]2+ fragment. The Ni-Ni distances of 2.400(1) and 2.402(1) in 1 and 2.389(2), 2.385(2) in 2 are obviously shorter than those of 2.4325(7), 2.4356(7) in the monomeric complex [Ni3(μ3-dpa)4(N3)2] 3. The magnetic properties of complexes 2 and 3 were studied by susceptibility measurements vs temperature. The XM vs T plots of both complexes show a strong antiferromagnetic behavior. The simulated J13 values are -95 cm-1 and -97 cm-1 for 2 and 3, respectively. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0012405313&doi=10.1002%2fjccs.200100145&partnerID=40&md5=5cb70e775ad9c18fdc9ca94f37bf864b https://scholars.lib.ntu.edu.tw/handle/123456789/624036 |
DOI: | 10.1002/jccs.200100145 |
顯示於: | 化學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。