配合物{[Co(C_(12)H_(10)N_4)_2(H_2O)_4]獉2C_4H_3O_4}n的水热合成、晶体结构和磁性研究  被引量:6

Hydrothermal synthesis,crystal structure and magnetic property of the complex { [Co(C_(12)H_(10)N_4)_2(H_2O)_4]·2C_4H_3O_4}n

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作  者:蒙斌芳 刘宇奇[1] 邢宇博 李玮[1] 

机构地区:[1]昆明理工大学理学院,云南昆明650500

出  处:《云南大学学报(自然科学版)》2016年第5期791-796,共6页Journal of Yunnan University(Natural Sciences Edition)

基  金:国家自然科学基金(KKGD201007003);昆明理工大学引进人才科研启动基金(KKSY201507026)

摘  要:采用水热合成法合成了一种新的金属有机配合物{[Co(C_(12)H_(10)N_4)_2(H_2O)_4]獉2C_4H_3O_4}n(C_(12)H_(10)N_4=4-bpdb=(1,4-双(4-吡啶)-2,3-二氮杂-1,3-丁二烯,C_4H_3O_4=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=0.628 95(3)nm,b=0.701 07(3)nm,c=2.088 38(10)nm,β=92.502(2)°,Z=1,V=844.038(7)nm^3,D_c=1.537 mg/m^3,Mr=781.60,Z=1,μ=0.586 mm^(-1),F(000)=405,R_1=0.029 9,wR_2=0.091 6.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T_θ=-2.99 K.CCDC:1409869.A new metal-organic complex / [ Co ( C12 H10 N4 )2 ( H2O) 4 ] · 2C4H304 } n ( where C12 H10 N4, C4 H304 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 = 0.628 95 ( 3 ) nm, b = 0.701 07 ( 3 ) nm, c = 2.088 38 (10) nm ,β= 92.502 ( 2 ) °, γ = 113.331 ( 2 )°, V = 844.038 ( 7 ) nm^3, D = 1.537 mg/m^3, M, = 781.60, Z = 1 ,μ = 0. 586 mm J, F(000)= 405 ,R1 = 0.029 9,ωR2 = 0.091 6.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 inter- linked by not only hydrogen atoms between the coordinated water molecules and uncoordinated fumaric acid,but also-stacking interactions of wR2 = 0.091 6. 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 measure- ment investigation suggested an antiferromagnetic coupling between the Co( Ⅱ ) ions in the complex ( To =-2.99 K) .CCDC : 1409869.

关 键 词:金属配合物 水热合成 晶体结构 超分子 反铁磁性 

分 类 号:O611.4[理学—无机化学] O641[理学—化学]

 

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