蒙斌芳, 刘宇奇, 邢宇博, 李玮. 配合物{[Co(C12H10N4)2(H2O)4]∙2C4H3O4}n的水热合成、晶体结构和磁性研究*[J]. 云南大学学报(自然科学版), 2016, 38(5): 791-796. doi: 10.7540/j.ynu.20160110
引用本文: 蒙斌芳, 刘宇奇, 邢宇博, 李玮. 配合物{[Co(C12H10N4)2(H2O)4]∙2C4H3O4}n的水热合成、晶体结构和磁性研究*[J]. 云南大学学报(自然科学版), 2016, 38(5): 791-796. doi: 10.7540/j.ynu.20160110
MENG Bin-fang, LIU Yu-qi, XING Yu-bo, LI Wei. Hydrothermal synthesis,crystal structure and magnetic property of the complex {[Co(C12H10N4)2(H2O)4]·2C4H3O4}n[J]. Journal of Yunnan University: Natural Sciences Edition, 2016, 38(5): 791-796. DOI: 10.7540/j.ynu.20160110
Citation: MENG Bin-fang, LIU Yu-qi, XING Yu-bo, LI Wei. Hydrothermal synthesis,crystal structure and magnetic property of the complex {[Co(C12H10N4)2(H2O)4]·2C4H3O4}n[J]. Journal of Yunnan University: Natural Sciences Edition, 2016, 38(5): 791-796. DOI: 10.7540/j.ynu.20160110

配合物Co(C12H10N4)2(H2O)4∙2C4H3O4n的水热合成、晶体结构和磁性研究*

Hydrothermal synthesis,crystal structure and magnetic property of the complex Co(C12H10N4)2(H2O)4·2C4H3O4n

  • 摘要: 采用水热合成法合成了一种新的金属有机配合物Co(C12H10N4)2(H2O)4∙2C4H3O4n (C12H10N4=4-bpdb=(1,4-双(4-吡啶)-2,3-二氮杂 -1,3-丁二烯,C4H3O4=富马酸).通过X射线单晶衍射对该化合物进行结构表征,结果表明该化合物属于三斜晶系,P-1空间群,其晶胞参数分别为a=0.62895(3)nm,b=0.70107(3)nm,c=2.08838(10)nm,β=92.502(2)°,Z=1,V=844.038(7)nm3,Dc=1.537mg/m3,Mr=781.60,Z=1,μ=0.586mm-1,F(000)=405,R1=0.0299,wR2 =0.0916.中心离子Co(Ⅱ)与2个4-bpdb有机配体中的N原子和4个水分子中的O原子配位.借助于配位水分子和未配位的富马酸分子间的氢键作用力以及有机配体芳环之间的π…π堆积作用,该单核配合物最终形成了一个二维的超分子网状结构.磁学性质研究表明:该配合物存在弱的反铁磁性,其Tθ=-2.99K.CCDC:1409869.

     

    Abstract: A new metal-organic complex Co(C12H10N4)2(H2O)4·2C4H3O4n (where C12H10N4,C4H3O4 represents the 4-bpdb=(1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene,fumaric acid,respectively) has been hydrothermally synthesized,and was characterized by IR,elemental analysis and Single-crystal X-ray diffraction techniques,revealing that the structure of the synthesized complex belongs to triclinic system with space group p-1.The cell parameters are as follows:a=0.62895(3)nm,b=0.70107(3)nm,c=2.08838(10)nm,β=92.502(2)°,γ=113.331(2)°,V=844.038(7)nm3,Dc=1.537mg/m3,Mr=781.60,Z=1,μ=0.586mm-1,F(000)=405,R1=0.0299,wR2=0.0916.The central ion Co (Ⅱ) is coordinated with two nitrogen atoms from two 4-bpdb ligands and four oxygen atoms from four water molecules.The mononuclear molecules are interlinked by not only hydrogen atoms between the coordinated water molecules and uncoordinated fumaric acid,but also-stacking interactions of wR2=0.0916. Each Co(Ⅱ) atom is coordinated by two nitrogen atoms from two 4-bpdb ligands and four oxygen atoms from four water molecules.The mononuclear molecules are interlinked by not only hydrogen atoms aromatic ring,forming a 2D supramolecular network.The magnetic susceptibility measurement investigation suggested an antiferromagnetic coupling between the Co(Ⅱ) ions in the complex (Tθ=-2.99K).CCDC:1409869.

     

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