三核锌配位化合物Zn3(phen)2(2,4-DAA)6的水热合成、晶体结构、荧光和电化学性质  被引量:10

Hydrothermal Synthesis,Crystal Structure,Luminescence and Electrochemical Properties of Trinuclear Zinc(Ⅱ) Complex Zn_3(phen)_2(2,4-DAA)_6

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作  者:杨颖群[1] 李昶红[2] 李薇[1] 李东平[3] 匡云飞[1] 

机构地区:[1]衡阳师范学院化学与材料科学系,衡阳421008 [2]湖南工学院化学化工系,衡阳421002 [3]南京大学配位化学研究所,南京210093

出  处:《高等学校化学学报》2008年第3期449-452,共4页Chemical Journal of Chinese Universities

基  金:湖南省重点建设学科资助项目;湖南省教育厅科研基金(批准号:06C195);衡阳师范学院青年骨干教师基金资助

摘  要:以2,4-二氯苯氧乙酸(2,4-DAA)和邻菲啰啉(Phen)为原料,采用水热法合成了一个新的三核锌配合物Zn3(phen)2(2,4-DAA)6.该配合物属三斜晶系,P1空间群,晶胞参数a=1.1030(2)nm,b=1.2930(3)nm,c=1.5081(3)nm,α=100.436(3)°,β=110.227(3)°,γ=103.802(3)°,V=1.8760(7)nm3,Dc=1.661g/cm3,Z=1,F(000)=944.最终GooF=1.033,偏离因子R1=0.0326,wR2=0.0736.在配合物分子中,3个锌(Ⅱ)离子在同一直线上,且以中间锌(Ⅱ)为对称中心,Zn1…Zn2的距离为0.3378nm;3个锌(Ⅱ)离子存在两种配位方式:其中对称的锌离子分别与3个2,4-二氯苯氧乙酸中的3个羧基氧原子及一个邻菲啰啉的2个N原子配位,形成了五配位的变形四方锥结构,而中间的锌离子与6个2,4-二氯苯氧乙酸中的6个羧基氧原子配位,形成了六配位变形八面体结构.研究了配合物的光谱和电化学性质.A novel complex Zn3 (phen) 2 (2,4-DAA) 6 ( 2,4-DAA = 2,4-dichlorophenoxy acetic acid phen = 1,10 phenanthroline) was synthesized by means of hydrothermal method and characterized as crystallizing in the triclinic system with space group P1^-, α = 1. 1030(2) nm, b = 1. 2930(3) nm, c = 1. 5081 (3) nm, α = 100.436(3)°β=110.227(3)°, Y =103.802(3)°, V=1.8760(7) nm^3, Dc =1.661 g/cm^3, Z=1, F(000) =944. Final GooF = 1. 033, R1 =0. 0326, wR2 =0. 0736. The crystal structure shows that the three coordinated zinc ( Ⅱ ) ions lie in the same line with the middle one as the symmetric center. The distance between the central zinc (Ⅱ ) and the symmetric one is 0. 3378 nm. There exist two coordination modes for the three zinc ( Ⅱ ) ions : ( 1 ) The symmetric zinc ( Ⅱ ) ions are coordinated with three oxygen atoms and two nitrogen atom from three 2,4-dichlorophenoxy acetic acid molecules and one 1,10 phenanthroline molecule, respectively, forming a distorted square-pyramid coordination geometry. (2) The middle zinc ( Ⅱ ) ions is coordinated with six oxygen atoms from six 2,4-dichlorophenoxy acetic acid molecules, respectively, forming a distorted octahedral coordination geometry. The luminescence and electrochemical properties of the complex are also studied.

关 键 词:三核锌(Ⅱ)配合物 水热合成 晶体结构 荧光和电化学性质 

分 类 号:O611.4[理学—无机化学]

 

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