Syntheses, structures, and magnetic properties of terephthalato bridged dinuclear copper(II) and manganese(II) complexes with a tetradentate N-donor Schiff base

Somnath Choubey, Subhasis Roy, Kishalay Bhar, Rajarshi Ghosh, Partha Mitra, Chia Her Lin, Joan Ribas*, Barindra Kumar Ghosh

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

25 引文 斯高帕斯(Scopus)

摘要

Three dinuclear compounds of the types [Cu2(L) 2(μ-tp)](ClO4/PF6)2 (1/2) and [Mn2(L)2(μ-tp)](ClO4)2 H 2O (3) [L = N,N′-(bis-(pyridin-2-yl)benzylidene)-1,3- propanediamine and tp = terephthalate dianion] have been synthesized and characterized. Structures of 1-3 are solved using single crystal X-ray diffraction measurements. The structural analyses show bis(monodentate) in 1/2 and bis(bidentate) in 3 of terephthalate bridging motifs resulting dicationic dinuclear unit [M2(L)2(μ-tp)]2+ [M = Cu (1/2) and Mn (3)]. Each metal center adopts distorted trigonal bipyramidal geometry in 1/2 and a distorted octahedral geometry in 3 with MN4O and MN4O2 chromophores, respectively. Chelation by the tetradentate Schiff base along with bis(monodentate) and bis(bidentate) bridging of terephthalate complete pentacoordination around each copper(II) center in 1/2 and hexacoordination around each manganese(II) center in 3, respectively. Variable-temperature magnetic susceptibility measurements of 1-3 in the 2-300 K temperature range reveal weak antiferromagnetic interaction presumably due to long bridging arm.

原文英語
頁(從 - 到)1-9
頁數9
期刊Polyhedron
55
DOIs
出版狀態已發佈 - 2013 5月 17
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ASJC Scopus subject areas

  • 物理與理論化學
  • 無機化學
  • 材料化學

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