Synthesis and Crystal Structure of a Two-dimensional Zinc(Ⅱ) Coordination Polymer:[Zn2(DTB)(DMF)4(H2O)2]n (DTM= 1,4-Dinitro-2,3,5,6-tetracarboxylatebenzene Tetravalent Anion; DMF = Dimethylformamide)

A two-dimensional coordination polymer [Zn2(DTB)(DMF)4(H2O)2]n has been synthesized by 1,4-dinitro-2,3,5,6-tetracarboxylatebenzenic acid and hydrate zinc perchlorate in the solutions of DMF and H2O. The crystal belongs to the triclinic system, space group P with a = 8.887(6), b = 9.225(6), c = 9.828(7)(°A), α = 85.249(11), β = 74.863(11), γ= 86.510(13)°, V = 774.4(9), Z = 1, C22H32N6O18Zn2, Mr = 799.28, Dc = 1.714 g/cm3, F(000) = 410 and μ= 1.639 mm-1. The structure was refined to R = 0.0539 and wR = 0.1161 for 1584 observed reflections (I ＞ 2б(I)). In the complex there exist two kinds of coordination environments for the zinc(Ⅱ) ions and a two-dimensional sheet is formed via the coordination of carboxylates and zinc(Ⅱ) ions.     

2,6-二乙氧基-β-环糊精对铕(Ⅲ)-强力霉素络合物包合作用的研究及其分析应用

在pH=9.4的NH4Cl-NH3*H2O 的缓冲溶液条件下,强力霉素能与铕(Ⅲ)生成二元络合物并发射出铕(Ⅲ)位于612 nm处的特征荧光,加入2,6-二乙氧基-β-环糊精后,体系的荧光强度显著增强,且增强的荧光强度与强力霉素的浓度呈线性关系,据此建立了荧光分光光度法测量强力霉素的方法.在最佳实验条件下,测量的线性范围和检出限分别为6.2×10-8～1.3×10-5 mol/L和1.4×10-8 mol/L.本方法曾用于血样和尿样中强力霉素的测定.本研究讨论了荧光增强的机理.     

Synthesis and Crystal Structure of Organic Salt (H_2Bpy)(cda)_2 (cda = Carbamyldicyano-methanide Anion; H_2bpy = Hydrogen 4,4''''-Bipyridyl Divalent Cation)

1 INTRODUCTION Polynitrile compound Na(cda) is a very useful ligand and its complexes have been synthesized[1～3], in which the two-dimensional Eu(III) complex exhi- bits the strongest fluorescence and non-linear optic property[4]. We originally want to…     

氰根桥联配合物GdFe(CN)6.4H2O的合成、结构及磁性研究

合成了一个氰根桥联Gd(III)离子Fe的三维网状配合物GdFe(CN)6.4H2O。使用元素分析、红外光谱对配合物进行了一般性表征。用X射线衍射法测定了配合物的单晶结构, 属单斜晶系,空间群为C2, 晶胞参数为: a=1.2759(6), b=0.7404(1),c=1.3654(5)nm, β=90.22(3)°, Z=4, 对该配合物进行了变温磁化率测定(4.2-300K)。并使用哈密顿算符(H=-2JS1S2,S1=1/2, S2=7/2)对所测数据进行了理论分析, 求得表征CN^-离子所桥联Gd(III)离子与Fe(III)离子间磁相互作用强弱的磁交换积分J=-69.1cm^-^1, 表明Gd(III)离子与Fe(III)离子间存在有中等强度的反铁磁相互作用。该相互作用是目前已见文献报道的桥联稀土离子和过渡金属离子间发现的最大的磁相互作用。     

2—溴代对苯二甲酸根桥联双核钴（Ⅱ）配合笺的合成,磁性及抗癌活性

合成了三种以２－溴代对苯二甲酸为桥联配体的新型双核钴（Ⅱ）的配合物，即［Ｃｏ２（ＢＴＰ）（ｐｈｅｎ）４］（ＣｌＯ４）２．Ｈ２Ｏ（配合物１）、［Ｃｏ２（ＢＴＰ）（Ｎｐｈｅｎ）４］（ＣｌＯ４）２．２Ｈ２Ｏ（配合物２）和［Ｃｏ２（ＢＴＰ）（Ｂｐｙ）４］ＣｌＯ４）２，２ＨＯ（配合物３）（ＢＴＰ＝２－溴代对苯二甲酸根，ｐｈｅｎ＝１，１０－菲罗啉，Ｎｐｈｅｎ＝５－硝基－１，１０－菲罗啉，Ｂｐｙ－２，２＇联吡啶     

Synthesis and Crystal Structure of Complex: [Co(cdm)_2(H_2O)_4].2H_2O (cdm=Carbamyldicyanomethanide Anion)

1 INTRODUCTION Crystal engineering and the design of solid-state architectures have recently become areas of increasing interest[1, 2]. Such crystal engineering may afford new materials with useful properties such as catalytic activity, micro-porosity, nonlinear optical activity, cooperative magnetic behavior and so on. Polynitrile-ligand is one of the ideal multi-functional ligands for crystal engineering and many complexes with polynitriles as ligands have been found to show the spe…     

3－硝基邻苯二甲酸根桥联双核钴（Ⅱ）配合物的合成、磁性及抗癌活性

合成了两种以３－硝基邻苯二甲酸根为桥联配体的新型双核钴（Ⅱ）的配合物，即［Ｃｏ２（３ＰＴ）（Ｐｈｅｎ）４］·（ＣｌＯ４）２·４Ｈ２Ｏ（配合物１）和［Ｃｏ２（３ＰＴ）（ＮＰｈｅｎ）４］（ＣｌＯ４）２·５Ｈ２Ｏ（配合物２）（３ＰＴ＝３－硝基邻苯二甲酸根，Ｐｈｅｎ＝１，１０－菲口罗啉，ＮＰｈｅｎ＝５－硝基－１，１０－菲口罗啉）。使用元素分析，ＩＲ，ＵＶ－ｖｉｓ和电导测定方法对该两配合物进行了表征。测定了配合物的变温磁化率，并对所得数据进行了理论分析，求得了配合物１、２的磁交换积分均为２Ｊ＝－９．２ｃｍ－１。对配合物进行了体外抗人白血病癌细胞实验。发现该两配合物均具有较强的抑制人白血病癌细胞的活性。     

Syntheses and Crystal Structures of Two Two-dimensional Coordination Polymers with 2,3-Dimethylpyrazine-1,4-dioxide and Thiocyanate as Mixed Bridge Ligands

Two two-dimensional coordination polymers,[Cd(μ1,3-SCN-)2(μ1,6-L)]n 1 and [Co(μ1,3-SCN-)2(μ1,6-L)]n 2,have been synthesized with 2,3-dimethylpyrazine-1,4-dioxide (L) and thiocyanate as mixed bridging ligands,and their crystal structures were determined by X-ray crystallography.Both crystals belong to monoclinic system,space group C2/c.The other crystal parameters are as follows:for complex 1:a = 9.732(3),b = 14.658(5),c = 8.811(3) (A),β =102.935(4)°,Z = 4,V = 1225.1(7)(A)3,CsHsCdN4O2S2,Mr = 368.71,Dc.-- 1.999 g/cm3,F(000) =720 andμ = 2.117 mm-1;for complex 2:a = 9.528(7),b = 14.563(11),c = 8.415(6) (A),β =102.195(9)°,V= 1141.3(14) (A)3,Z = 4,C8H8CoN4O2S2,Mr = 315.23,Dc = 1.835 g/cm3,F(000) =636 andμ = 1.863 mm-1.The two complexes show similar two-dimensional sheet structures.Along the c axis one-dimensional chains are constructed by the coordination of Cd(Ⅱ) (or Co(Ⅱ))ions with μ1,6-L bridging ligand,and the μ1,3-SCN- bridging ligands make the chains connect to each other,resulting in the formation of a two-dimensional sheet on the ac plane.