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1.
徐涵 《无机化学学报》2016,32(8):1481-1486
通过水热法得到了2个配位聚合物{[Cd(L)(oba)]·3.5H2O}n(1)和{[Cd(L)2](p-bdc)}n(2)(L=4,4’-二(1-咪唑基)苯砜,H2oba=4,4’-联苯醚二甲酸,p-H2bdc=对苯二甲酸),对它们进行了元素分析、红外光谱分析,并利用X射线衍射测定了它们的单晶结构。晶体结构分析表明,配合物1具有四连接二重穿插的三维网络结构,其拓扑为{65·8}。配合物2具有四连接的二维结构,其拓扑为{44·62}。此外,在室温下对2个配合物进行了荧光分析。  相似文献   

2.
通过溶剂热和水热合成的方法制备了2个Cd(Ⅱ)配位聚合物[Cd2(L)(DMF)1.5(H2O)2]n1)和{[Cd(L)0.5(4,4''-bpy)(H2O)]·2H2O}n2)(H4L=5,5''-(己烷-1,6)-双-(氧基)-二-间苯二甲酸)。结构分析表明配合物1是一个(4,4)-连接的sql拓扑网络,拓扑符号为{44·62}2。配合物2是一个(4,4,4)-连接的三重穿插的bbf网络,拓扑符号为(66)(64·82)。配合物12都呈现出较好的热稳定性和荧光性质。  相似文献   

3.
通过溶剂热和水热合成的方法制备了2个Cd(Ⅱ)配位聚合物[Cd2(L)(DMF)1.5(H2O)2]n1)和{[Cd(L)0.5(4,4''-bpy)(H2O)]·2H2O}n2)(H4 L=5,5''-(己烷-1,6)-双-(氧基)-二-间苯二甲酸)。结构分析表明配合物1是一个(4,4)-连接的sql拓扑网络,拓扑符号为{44·62}2。配合物2是一个(4,4,4)-连接的三重穿插的bbf网络,拓扑符号为(66)(64·82)。配合物12都呈现出较好的热稳定性和荧光性质。  相似文献   

4.
合成了4个杂金属杯[4]配位聚合物{[Cd(L)(tpa)]·3H2O}n1),{[Zn2(L)2(tpa)2]·3H2O}n2),{[Co(L)(oba)]·2DMA·0.5H2O}n3)和{[Zn(L)(oba)]·DMA}n4)(L=2-(1H-咪唑基-甲基)-6-(3-(1H-咪唑基-甲基)-5-叔丁基-2-羟基)苄基-4-叔丁基苯酚,H2tpa=对苯二甲酸,H2oba=4,4''-二苯醚二甲酸),并通过元素分析、热重、红外光谱、固态紫外、单晶X射线衍射和粉末X射线衍射对其进行了表征。单晶结构分析表明晶体1是单斜晶系,P21/n空间群,而晶体2,34均为三斜晶系,P1空间群。化合物1,2,34是由0维[M(N4O2C29H36)](M=Zn,Co,Cd)的杂金属杯[4]与配体对苯二甲酸和4,4''-二苯醚二甲酸形成的一维配位聚合物。  相似文献   

5.
合成了4个杂金属杯[4]配位聚合物{[Cd(L)(tpa)]·3H2O}n1),{[Zn2(L)2(tpa)2]·3H2O}n2),{[Co(L)(oba)]·2DMA·0.5H2O}n3)和{[Zn(L)(oba)]·DMA}n4)(L=2-(1H-咪唑基-甲基)-6-(3-(1H-咪唑基-甲基)-5-叔丁基-2-羟基)苄基-4-叔丁基苯酚,H2tpa=对苯二甲酸,H2oba=4,4''-二苯醚二甲酸),并通过元素分析、热重、红外光谱、固态紫外、单晶X射线衍射和粉末X射线衍射对其进行了表征。单晶结构分析表明晶体1是单斜晶系,P21/n空间群,而晶体2,34均为三斜晶系,P1空间群。化合物1,2,34是由0维[M(N4O2C29H36)](M=Zn,Co,Cd)的杂金属杯[4]与配体对苯二甲酸和4,4''-二苯醚二甲酸形成的一维配位聚合物。  相似文献   

6.
在水热条件下,以N-氧化-2-吡啶膦酸(H2L)为主配体,4,4'-联吡啶(bpy)为桥联配体,合成了3个铜有机膦酸配合物: {[CuL(bpy)0.5(H2O)]·2H2O}n1), {[Cu(HL)2(bpy)]·4H2O}n2)和{[Cu2(L)2(bpy)]·3H2O}n3)。配合物1中,相邻的铜离子由2个膦酸根连成二聚体,二聚体之间通过bpy桥联成一维链。配合物2中,单核[Cu(HL)2]被bpy连接成一维链。配合物3中,四聚体[Cu2(L)2]2被bpy连接成“砖块状”结构的二维层。磁性研究表明,配合物1和3中铜离子之间存在反铁磁性耦合。  相似文献   

7.
在溶剂热条件下,合成了2个基于V型辅助配体(bipmo、bppmo)的镉配位聚合物{[Cd (bipmo)(NDC)]·1.75H2O}n1)和{[Cd (bppmo)(NDC)(H2O)]·H2O}n2),其中H2NDC=2,6-萘二羧酸,bipmo=双(4-(1H-咪唑-1-基)苯基)甲酮,bppmo=双(4-(吡啶-4-基)苯基)甲酮。利用单晶X射线衍射、键价和分析、红外光谱和元素分析对其结构进行了表征。研究发现,配合物1具有二重互穿的{63}拓扑结构。配合物2同样是3-连接的{63}拓扑,却存在三重穿插结构。分析表明,V型配体对最终结构的形成有很大影响。此外,对配合物12的发光性质也进行了详细研究。  相似文献   

8.
合成了2个镉(Ⅱ)金属有机骨架化合物{[Cd(L)(fma)]·0.5H2O}n1)和{[Cd(L)0.5(sdb)]·DMF}n2)(L=E,E-2,5-二己氧基-1,4-双(2-乙烯-吡啶基)苯,H2fma=延胡酸,H2sdb=4,4''-磺酰基二苯甲酸),研究了它们在金属离子和有机分子的发光传感中的应用。结果表明,Fe3+对配位聚合物12的发光强度有明显的猝灭作用。此外,聚合物12还对水杨醛具有明显的猝灭能力。  相似文献   

9.
设计合成了3种新颖的金属有机配合物(MOCs):{[Pb2(HL)(phen)]·2H2O}n1),{[Ni(H3L)(4,4''-bipy)1.5(H2O)4]·6H2O}n2)和{[Ni2(HL)(1,4-bibb)(H2O)]·(CH3CN)·H2O}n3)(H5L=3,5-二(2'',5''-苯二羧酸)苯甲酸,phen=1,10-菲咯啉,4,4''-bipy=4,4''-联吡啶,1,4-bibb=1,4-二(苯并咪唑)苯),并通过单晶X射线衍射、红外光谱(IR)、热重分析(TG)和粉末衍射对它们进行结构表征。结构分析表明1是基于[Pb2μ2-COO)2μ1-COO)4]SBUs的一维链状结构;2是二维层状结构,其拓扑符号为{4.62}2{42.62.82};3是一个3D网络结构,其拓扑符号为{62.84}{64.82}2。进一步研究了配合物荧光和磁性能。荧光检测显示,配合物1在水溶液中可以高灵敏识别Fe3+和Cr2O72-离子。同时研究了配合物1对Fe3+和Cr2O72-猝灭机理。磁性分析表明配合物3中的Ni(Ⅱ)离子之间存在反铁磁相互作用。  相似文献   

10.
采用水热合成的方法,在以5-(4-羟基吡啶基甲基)间苯二甲酸(H2L)作主配体、4,4’-联吡啶(4,4’-bpy)和1,2-二(4-吡啶基)乙烯(bpe)作辅配体的条件下,得到2种新颖的Zn(Ⅱ)配位聚合物{[Zn(L)(4,4’-bpy)0.5]·2H2O}n1)和{[Zn(L)(bpe)0.5]·2H2O}n2)。配合物通过单晶X射线衍射的方法进行了结构分析,并进一步通过红外光谱(IR)、元素分析、PXRD和热重分析(TG)的方法进行了表征。结构分析表明配合物1展现出的是一种三维三重互穿网络;聚合物2为二维双层结构,并进一步组合成了三重平行互穿的2D→3D的空间网络。此外,研究了配合物的荧光性质。  相似文献   

11.
通过水热/溶剂热合成的方法制备了3个Zn(Ⅱ)/Co(Ⅱ)配合物{[Zn(H2L)(H2O)3]·H2O·0.5H4L}n(1)、{[Co(L)0.5(4,4'-bpy)]·0.5H2O}n(2)和{[Co(L)0.5(pbmb)(H2O)]·H2O}n(3)(H4L=5,5'-(hexane-1,6-diyl)-bis(oxy)diisophthalic acid,4,4'-bpy=4,4'-bipyridine,pbmb=1,1'-(1,3-propane)bis-(2-methylbenzimidazole))。结构分析表明配合物1为一维链结构。2为拓扑符号为(64·7·8)(6·72)的三重穿插网络结构。3是拓扑符号为(4·62)(42·62·82)的(3,4)-连接的二维网络结构。配合物1呈现出较好的荧光性质。  相似文献   

12.
荣介伟  章文伟 《无机化学学报》2018,34(12):2307-2315
以柔性1,3,5-三(4-羧酸苯氧基)苯(H3TCPB)为配体,以4,4''-联吡啶(4,4''-BPY)为辅助配体,在溶剂热条件下合成了2个新颖的分别具有三核锌簇和三核钴簇的金属有机骨架化合物:{[Zn3(TCPB)2(4,4''-BPY)]·DMF·3H2O}n1)和{[Co1.5(TCPB)(DMF)(H2O)]·DMF}n2),通过单晶X射线衍射,红外光谱,元素分析,热重分析和粉末X射线衍射对其结构进行了表征。单晶X射线衍射分析表明化合物1属于三斜晶系,P1空间群,表现出三维(3,8)连接的网状结构,拓扑符号为:{43}2·{46·618·84}·{6};化合物2也属于三斜晶系,P1空间群,为二维(3,6)连接的网络层状结构,拓扑符号为:{43}4·{46·618·84}。此外,荧光性质研究表明固态化合物1在室温条件下发射出源于TCPB3-和4,4''-BPY配体的淡蓝色荧光,而化合物2在相似的条件下没有荧光发射。  相似文献   

13.
We have synthesized a series of metal–organic coordination frameworks under solvothermal conditions, formulated as [Cu(L)(phen)](1), [Co2(L)2(bib)]·CH3OH(2), [Co(L)(btmb)0.5](3), [Zn(L)(bib)]·2H2O(4), [Cu(L)(bib)]·DMF(5), and [Mn4(L)4(bimb)(CH3OH)](6) based on a flexible multicarboxylic bridging ligand 4,4′-methylenebis(oxy)-dibenzoic acid (H2L) and flexible N-donor ligands 1,4-bis (1H-imidazol-1-yl)-butane (bib), 1,4-bis(1H-1,2,4-triazol- 1-ylmethyl)benzene (btmb), and 1,4-bis(1H-imidazol-1-ylmethyl)benzene (bimb). The structures of the frameworks have been determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectra, and thermogravimetric analyses. The crystal structure determinations reveal that 1 has a 1-D Z-shape chain. Compounds 2 and 3 are 2-D twofold parallel interpenetrating 4-connected net with the Schläfli symbol {44·62}. Compound 4 is a 2-D threefold parallel interpenetrating 4-connected nets with the Schläfli symbol {44·62}. Compound 5 is 3-D 4-connected net with the Schläfli symbol {65·8}. Compound 6 is characterized by a three-dimensional framework with one-dimensional homogeneous Mn-carboxylate chain. We found that flexible carboxylate ligands have different coordination modes under different synthetic conditions. The flexible skeleton of ligands and the coordination angle between the ligand and the metal ion is described. The luminescence and thermogravimetric properties of these compounds have been investigated.  相似文献   

14.
Two 3-D MOFs, {[Co2(oba)2(bmip)]·DMA}n (1) and [Cd(1,3-bdc)(bmip)]n (2), where H2oba = 4,4′-oxybis(benzoic acid), 1,3-bdc = isophthalic acid and bmip = 1,3-bis(2-methylimidazolyl)propane, were synthesized under solvothermal conditions and characterized by single-crystal X-ray diffraction, powder XRD, FT-IR, TGA, and elemental analysis. Complex 1 features a 3-D→3-D twofold interpenetrating framework, and topological analysis shows the framework can be described as a 6-connected uninodal pcu net having the point symbol (412.63). Complex 2 shows a 3-D→3-D threefold interpenetrating network that can be described as a 4-connected uninodal cds net with (65.8) topology. Gas adsorptions of 1 were carried out, and photoluminescent properties of 1 and 2 were also investigated at room temperature.  相似文献   

15.
Two pairs of isostructural transition metal coordination polymers, {[Co(L)(H2O)]n} (1) and {[Zn(L)(H2O)]n} (3), {[Co(L)(4,4′-bipy)(H2O)]·H2O}n (2) and {[Zn(L)(4,4′-bipy)(H2O)]·H2O}n (4) (H2L = N-pyrazinesulfonyl-glycine acid and 4,4′-bipy = 4,4′-bipyridine), have been synthesized and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental and thermogravimetric analyses. The structures show that 1 and 3 display 2-D polymeric grid frameworks with a 3-connected (4, 82) topology. 2 and 4 also exhibit a 2-D polymeric grid structure, but are constructed by a 4-connected (4, 4) topology. The adjacent 2-D polymeric grid frameworks for 1–4 are further linked by hydrogen bonding O–H?O interactions to form 3-D supramolecular interweaved orderly networks. The fluorescent properties of 3 and 4 were investigated in the solid state.  相似文献   

16.
Using 4-methylbenzenethiolates of Zn or Cd as precursors and 4,4′-bipyridine (4,4′-bpy) as bridges, we have synthesized three new Zn(II)/Cd(II) coordination polymers, {[Cd(4,4′-bpy)2(NCS)2] · 2(SC6H4CH3-4)2} n (1), {[Zn(4,4′-bpy)(SC6H4CH3-4)2] · DMF} n (2) and {[Zn(4,4′-bpy)(SC6H4CH3-4)2] · H2O · 0.5CH3OH} n (3). Compound 1 is a 2-D sheet-like square polymer in which four 4,4′-bpy ligands and two isothiocyanate ligands complete the octahedral Cd(II) coordination sphere. Compounds 2 and 3 have similar coordination around Zn(II), but have different polymer structures. In 2, Zn(II) centers are linked via a bidentate 4,4′-bipyridine to form 1-D twisted arched chains, which is a new structural type for Zn(II). Compound 3 has 1-D zigzag chains. The 2-D sheets in 1 and 1-D chains in 2 and 3 are assembled via intermolecular C–H ··· π and C–H ··· S interactions into 3-D supramolecular networks. C–H ··· S interactions are a vital factor in constructing the sulfur-containing coordination polymers. Different coordination modes and packing schemes in 13 show that the guest molecule has a critical influence on formation of polymers.  相似文献   

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