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Synthesis, structures and magnetic properties of isoreticular polyrotaxane-type two-dimensional coordination polymers

机译：非体性聚光甲烷型二维配位聚合物的合成，结构和磁性

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摘要

Two isoreticular polyrotaxane-type two-dimensional coordination polymers (2D CPs) [Co-2(bpy)(sdb) 2]$ 2H(2)O (1) and [Co-2(bpe)(sdb) 2]$ DMA$ 1.5H(2)O (2) (where sdb=4,40-sulfonyldibenzoate; bpy=4,4' bipyridyl and bpe=4,4'-bipyridyl ethylene) have been synthesized and their solid state structures have been determined by X-ray crystallography. The solid state structures made up of wheels and axles have been synthesized using a bent dicarboxylate (sdb), two linear spacer ligands and Co(II). Interestingly, the sheets are two-fold entangled by [Co-2(sdb) 2Co(2)] wheels and bpy or bpe axles. Due to the shorter length of the bpy ligand, the [Co-2(sdb)(4)] moieties in 1 are brought closer than in the sheet formed in 2. The magnetic properties of 1 and 2 have been discussed and fitted according to a spin Hamiltonian. 1 showed predominantly antiferromagnetic interactions with exchange integral of -1.522 cm(-1). While 2 exhibited the paramagnetic behaviour below 40 K and antiferromagnetic behaviour at higher temperature.
机译：两种同心的聚映烷型二维配位聚合物（2D CPS）[CO-2（BPY）（SDB）2] $ 2h（2）o（1）和[CO-2（BPE）（SDB）2] $ DMA $ 1.5h（2）o（2）（其中Sdb = 4,40-磺胺Ligenzoate; Bpy = 4,4'1'Bibyridyl和BPE = 4,4'-双吡啶乙烯）并通过它们确定固态结构X射线晶体学。使用弯曲的二羧酸甲酯（SDB），两种线性间隔配体和CO（II）合成由轮子和轴组成的固态结构。有趣的是，纸张由[CO-2（SDB）2CO（2）]轮和BPY或BPE轴缠结两倍。由于BPY配体的长度较短，1中的[CO-2（SDB）（4）]部分比在2中形成的片材上较近。已经讨论和安装了1和2的磁性。自旋哈密顿。图1显示了与-1.522cm（-1）的交换积分的反铁磁性相互作用。虽然2在较高温度下表现出低于40 k和反铁磁性行为的顺磁性行为。

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  • 来源
    《RSC Advances》 |2017年第72期|共5页
  • 作者

    Park In-Hyeok; Herng Tun Seng; Ju Huiyeong; Ding Jun; Lee Shim Sung; Vittal Jagadese J.;

  • 作者单位

    Gyeongsang Natl Univ Dept Chem Jinju 52828 South Korea;

    Natl Univ Singapore Dept Mat Sci &

    Engn Singapore 119260 Singapore;

    Gyeongsang Natl Univ Dept Chem Jinju 52828 South Korea;

    Natl Univ Singapore Dept Chem 3 Sci Dr 3 Singapore 117543 Singapore;

    Gyeongsang Natl Univ Dept Chem Jinju 52828 South Korea;

    Natl Univ Singapore Dept Chem 3 Sci Dr 3 Singapore 117543 Singapore;

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