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1.
利用水热方法制备了一个新的过渡金属镉配合物[Cd(1,3-BDC)(L)(H2O)2]·H2O(1,3-H2BDC=间苯二甲酸,L=2-(3-吡啶基)-1H-苯并咪唑),并通过元素分析、红外光谱和X-射线单晶衍射方法确定了该配合物的晶体结构.结构分析表明该配合物属于单斜晶系,P21/c空间群,晶胞参数a=1.016 41(6)nm,b=2.088 42(12)nm,c=1.001 38(6)nm,β=106.336 0(10)°,V=2.039 8(2)nm3,Z=4,R1=0.020 7,wR2=0.494.配合物中CdⅡ离子与L配体的1个吡啶N原子、1,3-BDC的4个氧原子和2个配位水的O原子配位,形成七配位的扭曲十面体结构.配体1,3-BDC的桥连相邻的CdⅡ离子形成一维聚合物链,相邻链间通过氢键和π…π作用形成三维超分子网络,并对该配合物的热稳定性和荧光性质进行了研究.  相似文献   

2.
通过水热合成得到3个有机金属配位聚合物,即[Cu(1,2-BDC)(L)](1),[Cu(HBTC)(L)]·2H2O(2),[Co(HBTC)(L)]·H2O(3),(L=N,N-双(3-氨基吡啶)乙二酰胺,1,2-H2BDC=1,2-邻苯二甲酸和H3BTC=1,3,5-均苯三甲酸)。配合物1是基于1D[Cu-1,2-BDC]n和[CuL]n链形成的一个3DCdSO4-型拓扑结构。配合物2~3是同构的,均显示出2D双层(3,5)-连接的{42·67·8}{42·6}拓扑结构。相邻的2D双层网络通过分子间的氢键(配合物2)和π-π堆积(配合物3)作用进一步拓展成3D超分子框架。我们对芳香羧酸和中心金属离子对配合物结构的影响进行了详细的讨论。此外,还研究了配合物1~3的电化学性质和固态荧光性质。  相似文献   

3.
合成了一种锌配位聚合物{[Zn(H2O)2(L)(phen)].3H2O}n(1),其中,H2L=1-氨基-8-萘酚-3,6-二磺酸并利用元素分析、红外、紫外、荧光、热重和X-射线单晶衍射分析进行了表征。标题配合物属正交晶系,Pnma空间群,a=1.698 90(12)nm,b=0.661 88(11)nm,c=2.480 40(14)nm,V=2.789 1(5)nm3,Z=4,Mr=634.92,Dc=1.512 g.cm-3,R=0.058 6,wR=0.121 4。标题配合物呈现一维链状结构,链内L2-和phen配体之间存在π-π堆积作用,链与链之间通过氢键扩展为二维超分子网络。  相似文献   

4.
[Cu(phen)2·Cl]·Bsesa的晶体结构   总被引:1,自引:1,他引:0  
对苯磺酰牛磺酸阴离子一维链构筑的三维配位聚合物[Cu(phen)2·Cl]·Bsesa(phen=o-phenanth-roline,BsesaH=2-Benzenesulfonylamino-ethanesulfonicacid)进行了元素分析、红外光谱、X射线衍射等表征。分析结果表明此配合物属单斜晶系,空间群为P21/c,晶胞参数为:a=0.9719(2)nm,b=2.5521(5)nm,c=1.2505(2)nm,β=93.407(5)°,V=3.096(1)nm3,Z=4,Dc=1.553g/cm3,μ=0.978mm-1,F(000)=1484。配合物中的金属铜离子与2个邻菲咯啉配位,还与一个Cl阴离子配位。苯磺酰牛磺酸阴离子通过N-H…O氢键形成一维螺旋链,配阳离子通过π-π堆积作用形成一维链,邻近的一维链再通过π-π堆积作用形成二维网,在二维网之间平衡插入由苯磺酰牛磺酸阴离子构筑一维螺旋链,邻近的螺旋链之间的距离为0.972(1)nm,螺旋链与二维网之间通过弱而丰富的C-H…O氢键形成三维网结构。  相似文献   

5.
陈金喜  范巧玉 《无机化学学报》2011,27(11):2185-2190
本文以Mg(NO3)2.6H2O分别与4,5-咪唑二羧酸(4,5-imidazoledicarboxylic acid,H3imdc)和3,5-吡唑二羧酸(3,5-pyrazoled-icarboxylic acid,H3pdc)通过水热反应合成了2个新型镁的一维配位聚合物[Mg(Himdc)(DMF)(H2O)]n(1)和[Mg(Hpdc)(H2O)2]n(2),并对配位聚合物1和2进行了元素分析、FTIR、热重分析和X-射线单晶结构解析等表征。X-射线单晶结构解析表明配位聚合物1和2的晶体分别属于正交晶系与单斜晶系,空间群分别为P212121和P21/c。配合物1为一维Z字型链状结构,配合物2为一维线型链状结构,2个配合物中的链与链之间均通过氢键相互作用堆积成三维结构。对1和2进行固态荧光光谱分析,结果显示,1和2的荧光发射峰与各自的配体的荧光发射峰峰形一致,说明2个配合物的荧光发射峰应归属于各自配体内的π→π*电子跃迁。  相似文献   

6.
水热条件下,合成了钴(Ⅱ)配位聚合物{[Co(L)(chdc)].2H2O}n(1)(L=1,3-二(苯并咪唑-1-甲基)苯,H2chdc=1,4-环己烷二酸)。结构分析表明,配合物1的晶体属于单斜晶系,C2/c空间群,晶胞参数为a=1.4504(1)nm,b=1.834 9(2)nm,c=2.128 7(2)nm,β=94.325(1)°,V=5.649 2(9)nm3,Z=4。该配合物为一维环状链结构,并进一步通过链间的π-π作用自组装成二维超分子结构。配合物1作为类芬顿反应的催化剂降解刚果红显示较高的活性。  相似文献   

7.
通过水热法合成得到了一个包含四核镉(Ⅱ)的基于2-丙基-4,5-二甲酸咪唑和4,4-联吡啶的配位聚合物[Cd2(HPIDC)2(bpy)(H2O)2](1)。X-射线单晶衍射分析结果表明:配合物1属单斜晶系,结晶在c2/c空间群中,晶胞参数为:a=1.936 6(4)nm,b=1.504 1(3)nm,c=2.200 4(5)nm,β=94.990(4)°,V=6.385(2)nm3,Z=8,1.393 mm-1,F(000)=3 216,Dc=1.684 g.cm-3,R1=0.045 8,wR2=0.108 9。通过链间的O-H…O氢键作用,形成了三维的超分子结构。固体荧光测试表明:配合物1在427 nm处发射出较强的荧光。  相似文献   

8.
田俐  陈琳  张馨  艾怡春  涂峰 《化学研究》2006,17(3):13-15
合成了邻苯二甲酸.邻菲咯啉合钴的配合物[Co(C8H4O4)(C12H8N2)(H2O)3].H2O,并用元素分析、红外光谱和X射线单晶衍射等手段进行了表征.结果表明,该配合物属单斜晶系,P2(1)/n空间群:a=0.757 1(2)nm,b=1.373 7(3)nm,c=2.001 5(4)nm,β=95.56(1)°,V=2.071 9(8)nm3,Mr=475.31,Dc=1.524g/cm-3,Z=4,F(000)=980,μ(MoKα)=0.879 mm-1,R1=0.034 8,wR2=0.071 1.在配合物中钴的配位数为6,具有畸变的八面体配位构型.晶体通过分子间氢键形成一维的无限链状结构.链与链之间通过芳环堆积作用构成二维超分子网络.  相似文献   

9.
合成了两个新型配位聚合物[Cu_2(OH)(H_2O)(L)_3(bpp)]_n(1),[Zn(L)_2(H_2O)(bipy)]_n(2)(HL=C_4H_4N_2O_2S,4-甲基-1,2,3-噻二唑-5-甲酸; bpp=1,3-双(4-吡啶基)-丙烷; bipy=4,4’-联吡啶),用元素分析、红外光谱、热重分析和单晶X-射线衍射对产物进行了表征和结构测定.配合物1是双核结构,中心金属离子Cu~(2+)的配位数均为五,构成略为变形的三角双锥体;配合物2的中心金属离子Zn~(2+)的配位构型是扭曲的三角双锥结构.配合物1通过氢键形成了二维结构,配合物2通过分子间氢键和π-π堆积作用形成了三维结构.用荧光光谱法研究了配体和配合物与DNA之间的相互作用.  相似文献   

10.
采用普通溶液法和水热法分别合成了2个金属-有机配位聚合物:{[Cu(Ts-5-AIPA)(phen)(H_2O)]·H_2O}n(1)和[Cd(Ts-5-AIPA)(phen)]n(2)(Ts-5-AIPA=N-对甲苯磺酰-5-氨基间苯二甲酸根,phen=菲咯啉),并用红外光谱、热重和X射线单晶衍射对配合物的结构进行了表征。结果表明:2个配合物均为单斜晶系,配合物1为P21/c空间群,配合物2为C2/c空间群;2个配合物均为一维链状结构,再通过氢键和π-π堆积作用形成三维超分子结构。另外,还研究了2个配位聚合物的荧光性质。  相似文献   

11.
Seven new d10 metal coordination polymers with isomeric benzenedicarboxylates and 3-(2-pyridyl)pyrazole ligands, [Zn2 L2(1,2-BDC)(H2O)]n ( 1), {[Cd2(H L)2(1,2-BDC)2] x H2O}n ( 2), [Cd(H L)(1,2-BDC)(H2O)]n (3), [Zn(H L)(1,3-BDC)(H2O) x 3H2O]n ( 4), [Cd2 L2(1,3-BDC)(H2O)]n (5), [Zn(H L)2(1,4-BDC)]n ( 6) and [Cd(H L)2(1,4-BDC)]n (7) (BDC = benzenedicarboxylate, H L = 3-(2-pyridyl)pyrazole), have been synthesized and structurally characterized by elemental analysis, IR and X-ray diffraction. Single-crystal X-ray analyses reveal that each complex takes a different one-dimensional (1D) chain structure. In 1-7, the BDCs act as bridging ligands, exhibiting rich coordination modes to link metal ions. The three BDC isomers exhibit different coordination modes: micro(1)-eta(1):eta(1)/micro(3)-eta(2):eta(1), micro(3)-eta(1):eta(2)/micro(3)-eta(2):eta(1), micro(2)-eta(1):eta(1)/micro(1)-eta(1):eta(0) and micro(1)-eta(1):eta(1)/micro(1)-eta(1):eta(0) for 1,2-BDC, micro(1)-eta(1):eta(1)/micro(1)-eta(1):eta(0) and micro(1)-eta(1):eta(0)/micro(2)-eta(2):eta(1) for 1,3-BDC, and micro(1)-eta(1):eta(0)/micro(1)-eta(0):eta(1), micro(1)-eta(1):eta(0)/micro(1)-eta(1):eta(0) and micro(1)-eta(1):eta(1)/micro(1)-eta(1):eta(1) for 1,4-BDC, respectively. In these complexes, H acts as a simple bidentate chelate ligand (in 2, 3, 4, 6 and 7), similar to 2,2'-bipyridine, or as a tridentate chelate-bridging ligand (in 1 and 5) via deprotonation of the pyrazolyl NH group and coordination of the pyrazolyl N atom to a second metal ion. The structural differences indicate that the backbone of such dicarboxylate ligands plays an important role in governing the structures of such metal-organic coordination architectures, and the chelating bipyridyl-like ligand H leads to the formation of these coordination polymers with one-dimensional structures by occupying the coordination sites of metal ions. Moreover, the photoluminescent properties of complexes were also studied in the solid-state at room temperature.  相似文献   

12.
在水热条件下,我们利用邻菲咯啉衍生物配体(L=2-(3-fluorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline)和1,3-间苯二甲酸(1,3-H2BDC)反应得到了一维配位聚合物[Cd2(L)2(1,3-BDC)2]n,并对该化合物进行了元素分析、红外和单晶X-射线表征。该化合物属于三斜晶系,空间群Pī,晶胞参数a=1.080 8(4)nm,b=1.149 5(4)nm,c=1.924 8(7)nm,α=106.482(5)°,β=99.436(6)°,γ=93.093(6)°,V=2 249.2(14)nm3,Z=4,C27H15CdFN4O4,Mr=590.83,Dc=1.745 g.cm-3,F(000)=1 176,μ(Mo Kα)=1.024 mm-1,R=0.044 5和wR=0.111 7。该化合物为一维链状结构,链与链之间又进一步地通过CH-π相互作用形成二维层状超分子结构。  相似文献   

13.
The title coordination polymer,[Zn (L) (1,4-BDC)]n (1) (L =2-(4-fluorophenyl)-1H-imidazo [4,5-f] [1,10] phenanthroline and 1,4-H2BDC=1,4-benzenedicarboxylic acid) has been synthesized by hydrothermal method and characterized by elemental analysis,IR and single-crystal X-ray diffraction. It crystallizes in triclinic,space group P1 with a=0.970 85(16) nm,b=1.076 98(18) nm,c=1.203 6(2) nm,α=63.894(2)°,β=69.051(2)°,γ=80.427(2)°,V= 1.055 4(3) nm3,Z=2,C27H15FN4O4Zn,Mr=543.80,Dc=1.711 g·cm-3,F(000)=552,μ(Mo Kα)=1.220 mm-1,R=0.037 2 and wR=0.084 4. The 1,4-BDC ligands linked the Zn(Ⅱ) atoms to form a two-dimensional layer structure. The π-π stacking interactions between L ligands extended the adjacent layers into a three-dimensional supramolecular network. Finally,the N-H…O hydrogen bonds further stabilizes the structure of 1.  相似文献   

14.
溶剂热条件下采用Cd(NO3)2.4H2O、对苯二甲酸和三乙烯二胺作为反应物合成出一个具有二维骨架结构的配位聚合物{Cd(bdc)(dabco)(DMF)].2H2O}n(1),并采用元素分析、红外光谱、差热分析和X-射线单晶衍射进行了研究及表征。晶体结构分析结果表明:对苯二甲酸离子(bdc)将Cd(Ⅱ)离子连接成一维链,相邻链之间进一步被三乙烯二胺(dabco)构筑成二维层状结构。沿c轴方向,垂直于二维层状结构中存在大小为0.74 nm×0.65 nm的一维通道。荧光谱图表明常温固态下配合物1发射蓝色荧光,荧光寿命为38.2 ns。  相似文献   

15.
Reactions of CdX2(X=NO3-, ClO4-) with Hatza (atza=5-aminotetrazole-1-acetato anion) and 2,2′-bipyridine (2,2′-bipy) or 1,10-phenanthroline (1,10-phen) in a methanol/aqueous solution produced a set of new Cd(Ⅱ) coordination polymers, {[Cd(atza)(H2O)(2,2′-bipy)]ClO4}n (1), {[Cd(atza)(H2O)(1,10-phen)]ClO4 }n (2), {[Cd(atza)(H2O)(2,2′-bipy)]NO3}n (3) and {[Cd(atza)2 (1,10-phen)]·0.5H2O}n (4). Single-crystal X-ray diffraction analysis reveals that each Cd(Ⅱ) ion has a distorted octahedral coordination geometry in 1-4, and the Cd(Ⅱ) ion centers are connected through the tridentate atza bridging ligands to form a 2D layer (1-3) or ID chain (4) structure. The fluorescent properties of 2 and 4 are also discussed.  相似文献   

16.
以氯化镉、烟碱(Nicotine)为原料在N,N-二甲基甲酰胺(DMF)溶液中反应,合成了1个新的一维链状Cd髤配聚物[Cd3(μ-Cl)6(Nicotine)2(DMF)2(H2O)2]n,用红外光谱、粉末X衍射、X-射线单晶衍射和热重分析对配合物进行了表征。X-射线单晶衍射表明,配合物属单斜晶系,空间群P21,晶胞参数:a=0.998 02(19)nm,b=1.836 89(15)nm,c=1.082 6(2)nm,β=95.809(3)°,V=1.974 5(5)nm3,Z=2,μ(Mo Kα)=2.045 mm-1,F(000)=1 044.0,R1=0.049 9,wR2=0.118 8[Ⅰ>2σ(Ⅰ)]。配合物中镉离子位于扭曲的配位八面体中心,相邻镉离子通过2个氯离子桥连形成了一维链结构,Nicotine、DMF、H2O占据配位八面体的剩余配位点,配聚物一维链平行于a轴。室温固态荧光测试显示,配聚物在448.5、573 nm处具有强的荧光发射。  相似文献   

17.
以2∶1∶4物质的量比的咪唑-4,5-二羧酸(H3IDC),1,4-双(咪唑-1-基)丁烷(bib)和ZnCl2或CdCl2为反应物,在水热条件下分别得到了1个二重穿插的二维锌(Ⅱ)配位聚合物{[Zn2(IDC)(bib)Cl].H2O}n(1)和1个二重穿插的二维镉(Ⅱ)配位聚合物[Cd2(HIDC)(bib)1.5Cl2]n(2)。用元素分析、红外光谱以及单晶X-射线衍射结构分析对它们的组成和结构进行了表征,并对它们的热稳定性和荧光性质进行了初步的研究。  相似文献   

18.
The hydrothermal reaction of Cd(OAc)2·H2O with 1,2-benzenedicarboxylate(1,2-BDC),imidazole and H2O resulted in the formation of a binuclear polymeric Cd(Ⅱ) complex {[Cd2(1,2-BDC)2(Im)4]·(H2O)}n which was then characterized by elemental analyses and single-crystal X-ray diffraction analysis.The crystal is of monoclinic system,space group P21/c with a = 14.6455(3),b = 9.3530(2),c = 23.7838(5) ,β = 106.6290(10)°,C112H104Cd8N32O36,Mr = 3373.47,V = 3121.64(11) 3,Dc = 1.795 g/cm3,F(000) = 1672,μ = 1.428 cm-1 and Z = 1.The final R = 0.0316 and wR = 0.0687 for 5045 reflections with I > 2σ(I).In the title complex,the two Cd(Ⅱ) ions are in different coordination environments with distorted octahedral and pengonal bipyramidal geometries,respectively.Two Cd polyhedra are linked together through one μ2-η1:η1 and one μ2-η1:η2 carboxylate groups from different 1,2-BDC ligands,giving rise to a binuclear Cd(Ⅱ) cluster,and such clusters are connected by bridged 1,2-BDC ligands to form a 2-D structure along the c axis.The inter-and intermolecular hydrogen bonds further connect the 2-D structures into a 3-D supramolecular network.  相似文献   

19.
以2∶2∶1物质的量比的CdCl2、H3IDC(咪唑-4,5-二羧酸)和bix(1,4-双(咪唑基-1-甲基)-苯)为原料,在水热条件下得到了1个新的三维层-柱状框架结构的配位聚合物[Cd(HIDC)(bix)0.5]n(1),并通过元素分析、红外光谱、热重分析以及单晶X-射线结构分析对其组成和结构进行了表征。单晶X-射线结构分析表明,1的晶体属于单斜晶系,P21/n空间群,a=1.15530(17)nm,b=1.05268(16)nm,c=1.198 71(18)nm,β=110.245(2)°,V=1.367 8(4)nm3,Z=4,Dc=1.873 g.cm-3,F(000)=756,对于2 000个可观测点(I>2σ(I)),最终残差因子R1=0.0336,wR2=0.0911。在1的晶体结构中,每个镉(Ⅱ)离子的配位数为6,处于扭曲的八面体配位环境中,每个HIDC2-分别桥联3个镉(Ⅱ)离子形成一种"砖墙"状的二维层结构,相邻的二维层之间通过bix的2个氮原子进一步连接形成三维层-柱状框架结构。化合物1的固体室温荧光测试结果表明,在波长为392 nm的光激发下于465 nm处出现强烈的荧光发射。  相似文献   

20.
A new 1D chain coordination polymer [Cd(dpq)(ox)0.5Cl]n(1) (dpq=dipyrido[3,2-d:2′,3′-f]quinoxaline and ox=oxalate) has been hydrothermally synthesized and structurally characterized by elemental analysis, IR and single crystal X-ray diffraction analysis. Compound 1 (CdClC15H8N4O2): monoclinic, space group P21/c, a=0.854 04(5) nm, b=2.094 90(13) nm, c=0.839 22(5) nm, Z=4, V=1.438(15) nm3, Mr=424.11, Dc=1.959 g·cm-3, F(000)=828.0, μ=1.719 mm-1, S=1.028, the final R=0.025 8 and wR=0.057 5. The crystal structure analysis indicates that the cadmium ion is coordinated by two oxygen atoms from a oxalate, two chelating nitrogen atoms from a dpq molecule and two Cl- anions. The adjacent Cd(Ⅱ) ions are linked by Cl- anions and oxalate ligands in alternate sequence to form a 1D chain coordination polymer and the adjacent chains are further connected by π-π stacking interactions to form a 2D supramolecular network. Moreover, the title compound exhibits blue emission in the solid state at room temperature. CCDC: 680748.  相似文献   

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