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N-donor co-ligands driven two new Co(II)- coordination polymers with bi- and trinuclear units: Crystal structures, and magnetic properties

机译:N-给体共配体驱动两种具有双核和三核单元的新型Co(II)-配位聚合物:晶体结构和磁性

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Two new Co(II) coordination polymers(CPs), namely [Co-2(bpe)(2)(Hbppc)](n) (1) and [Co-3(mu(3)- OH)(bppc)(bpm)(H2O)].3H(2)O (2) (H(5)bppc=biphenyl-2,4,6,3',5'-pentacarboxylic acid, bpe=1,2-bis(4-pyridyl)ethene, bpm=bis(4-pyridyl)amine), have been obtained and characterized by elemental analysis, single-crystal X-ray diffraction, powder X-ray diffraction (PXRD), IR spectra and thermogravimetric analysis (TGA). 1 shows a binodal (4,6)-connected fsc net with a (4(4).6(10).8)(4(4).6(2)) topology, while 2 shows a binodal (5,7)-connected 3D network based on trinuclear [Co-3(mu(3)-OH)](5+) units with unusual (3.4(6).5(2).6)(3(2).4(6).5(7).6(5).7) topology. Variable-temperature magnetic susceptibility measurements reveals that complex 1 shows ferromagnetic interactions between the adjacent Co(II) ions, whereas 2 is a antiferromagnetic system.
机译:两种新的Co(II)配位聚合物(CP),即[Co-2(bpe)(2)(Hbppc)] [n)(1)和[Co-3(mu(3)-OH)(bppc)( bpm)(H2O)]。3H(2)O(2)(H(5)bppc =联苯-2,4,6,3',5'-五羧酸,bpe = 1,2-双(4-吡啶基)乙烯,bpm =双(4-吡啶基)胺,已获得并通过元素分析,单晶X射线衍射,粉末X射线衍射(PXRD),IR光谱和热重分析(TGA)进行表征。图1显示了具有(4(4).6(10).8)(4(4).6(2))拓扑的,连接有Binodal(4,6)的fsc网络,而图2显示了Binodal(5,7 )连接的基于三核[Co-3(mu(3)-OH)](5+)单元的3D网络,具有不寻常的(3.4(6).5(2).6)(3(2).4(6 ).5(7).6(5).7)拓扑。可变温度磁化率测量表明,配合物1显示相邻Co(II)离子之间的铁磁相互作用,而2是反铁磁系统。

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