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1.
以1,4-双(2-甲基苯并咪唑-1-亚甲基)苯(bmb)为主配体与Cd(NO32反应,通过改变辅助双羧酸配体2个羧基间的连接基团,得到了2个配位聚合物{[Cd(bmb)(tba)]·DMF}n1)和[Cd(bmb)(ada)]n2)(H2tda=5-叔丁基间苯二甲酸,H2ada=1,3-金刚烷二乙酸)。结构分析表明聚合物1显示二维三明治结构,带有交替的左手和右手螺旋链。聚合物2也显示了二维三明治结构,带有meso-螺旋和微孔。聚合物12都显示了强的荧光发射和高的热稳定性。  相似文献   

2.
通过设计柔性配体1,5-二(2-乙基苯并咪唑基)戊烷(bep),在二羧酸辅助配体的调控下成功制备了3个配位聚合物[Cd(bep)(sba)]n1),[Cd(bep)(bda)]n2),and{[Cd2(bep)(ada)2]·H2O}n3)(H2sba=4,4’-磺酰基二苯甲酸,H2bda=4,4’-联苯二甲酸,H2ada=1,3-金刚烷二乙酸)。配合物均呈现二维层状结构。配合物1由交替的Cd(Ⅱ)/bep/sba2-螺旋链构成。配合物2由Cd/bda2-单元构成二维结构,bep作为单齿配体与Cd(Ⅱ)配位。配合物3的二维层通过Cd/ada2-/H2O氢键螺旋链拓展成三维超分子。此外,对配合物1~3的粉末X射线衍射、热稳定性以及荧光性质进行了研究。  相似文献   

3.
通过设计柔性配体1,5-二(2-乙基苯并咪唑基)戊烷(bep),在二羧酸辅助配体的调控下成功制备了3个配位聚合物[Cd(bep)(sba)]n1),[Cd(bep)(bda)]n2),and{[Cd2(bep)(ada)2]·H2O}n(3)(H2sba=4,4’-磺酰基二苯甲酸,H2bda=4,4’-联苯二甲酸,H2ada=1,3-金刚烷二乙酸)。配合物均呈现二维层状结构。配合物1由交替的Cd(Ⅱ)/bep/sba2-螺旋链构成。配合物2由Cd/bda2-单元构成二维结构,bep作为单齿配体与Cd(Ⅱ)配位。配合物3的二维层通过Cd/ada2-/H2O氢键螺旋链拓展成三维超分子。此外,对配合物1~3的粉末X射线衍射、热稳定性以及荧光性质进行了研究。  相似文献   

4.
以1,4-双(2-甲基苯并咪唑-1-亚甲基)苯(bmb)为主配体与Cd(NO3)_2反应,通过改变辅助双羧酸配体2个羧基间的连接基团,得到了2个配位聚合物{[Cd(bmb)(tba)]·DMF}n(1)和[Cd(bmb)(ada)]_n(2)(H2tda=5-叔丁基间苯二甲酸,H_2ada=1,3-金刚烷二乙酸)。结构分析表明聚合物1显示二维三明治结构,带有交替的左手和右手螺旋链。聚合物2也显示了二维三明治结构,带有meso-螺旋和微孔。聚合物1和2都显示了强的荧光发射和高的热稳定性。  相似文献   

5.
采用溶剂热法合成了一系列Zn(Ⅱ)/Cd(Ⅱ)配位聚合物:{[Zn(cbaa)(bpmp)0.5(H2O)]·2H2O}n1)、[Zn(cbaa)(bip)]n2)、[Cd(cbaa)(Hizb)]n3)和[Cd2(cbaa)2(itmb)(H2O)]n4)(H2cbaa=4-羧基苯乙酸;bpmp=1,4-二(4-吡啶甲基)哌嗪;bip=3,5-双(1-咪唑基)吡啶;Hizb=2-(4-咪唑-1-基苯基)-1H-苯并咪唑;itmb=1-(咪唑-1-基)-4-(1,2,4-三唑-1-基甲基)苯)。X射线单晶衍射结果表明,半刚性的4-羧基苯乙酸和富氮辅助配体构筑形成了4个多样化拓扑结构的配位聚合物。化合物12是Zn(Ⅱ)配位聚合物:1是由2个Zn-羧酸盐链之间通过富氮配体桥连形成的一维梯形结构,而2是由Zn-羧酸盐链之间通过富氮配体拓展形成的二维单层结构;化合物34是Cd(Ⅱ)配位聚合物:3是由Cd-O无机链之间通过羧酸配体的桥连拓展形成的二维单层结构,富氮配体作为伸出层平面的悬臂仅仅起到结构修饰作用,而4则形成了Cd-羧酸盐空旷双层结构,富氮配体填充在层内空腔中,从而导致了致密双层结构的产生。另外,考察了4个化合物的热稳定性和光致发光性能。  相似文献   

6.
采用溶剂热法合成了一系列Zn(Ⅱ)/Cd(Ⅱ)配位聚合物:{[Zn(cbaa)(bpmp)0.5(H2O)]·2H2O}n1)、[Zn(cbaa)(bip)]n2)、[Cd(cbaa)(Hizb)]n3)和[Cd2(cbaa)2(itmb)(H2O)]n4)(H2cbaa=4-羧基苯乙酸;bpmp=1,4-二(4-吡啶甲基)哌嗪;bip=3,5-双(1-咪唑基)吡啶;Hizb=2-(4-咪唑-1-基苯基)-1H-苯并咪唑;itmb=1-(咪唑-1-基)-4-(1,2,4-三唑-1-基甲基)苯)。X射线单晶衍射结果表明,半刚性的4-羧基苯乙酸和富氮辅助配体构筑形成了4个多样化拓扑结构的配位聚合物。化合物12是Zn(Ⅱ)配位聚合物:1是由2个Zn-羧酸盐链之间通过富氮配体桥连形成的一维梯形结构,而2是由Zn-羧酸盐链之间通过富氮配体拓展形成的二维单层结构;化合物34是Cd(Ⅱ)配位聚合物:3是由Cd-O无机链之间通过羧酸配体的桥连拓展形成的二维单层结构,富氮配体作为伸出层平面的悬臂仅仅起到结构修饰作用,而4则形成了Cd-羧酸盐空旷双层结构,富氮配体填充在层内空腔中,从而导致了致密双层结构的产生。另外,考察了4个化合物的热稳定性和光致发光性能。  相似文献   

7.
以6-甲基-2,3,5-吡啶三酸为配体和过渡金属盐反应,合成出2个新颖的金属配位聚合物{[Cu(Hmptc)(H2O)]·2H2O}n(1)和{Cd(Hmptc)(H2O)}n(2)(H3mptc=6-甲基-2,3,5-吡啶三酸)。配合物1存在具有四边形孔道的二维网状结构。配合物2中的Cd(Ⅱ)中心通过Hmptc2-配体连接成为类似于笼状的二维层状结构,进一步由氢键相互作用连接成三维超分子结构。配合物2存在蓝绿色荧光。  相似文献   

8.
在溶剂热条件下合成并表征了2个基于2,2''-联苯甲酸(H2dpa)和1,4-二(1-苯并咪唑基甲基)苯(bbix)的配位聚合物:[Cu2(bbix)(dpa)2(C2H5OH)2]n1),{[Cd(bbix)0.5(dpa)]·0.5H2O}n2)。两者均显示二维结构。1中含有Cu-dpa螺旋链,bbix进而将螺旋链连接形成以Cu(Ⅱ)离子为3-连节点的63波浪状网格。而在配合物2中,dpa2-与Cd(Ⅱ)形成四-元环和八-元环交替连接而成的带状一维链,并由bbix连接得到二维网格。此外,还研究了12的热稳定性以及室温下2的荧光性能。  相似文献   

9.
用水热法合成得到2个Cd(Ⅱ)配合物,[Cd(L)(4,4’-bipy)0.5(H2O)2]n1)和[Cd(L)(bpp)(H2O)]n·2nH2O(2)(L=3-氧乙酸基苯丙烯酸,4,4’-bipy=4,4’-联吡啶,bpp=1,3-二吡啶基丙烷),并测定了他们的晶体结构。结构分析表明,在配合物1中,L配体连接Cd(Ⅱ)中心形成一维[CdL]n链,4,4’-联吡啶配体进一步桥联形成二维层状结构;配合物2是一个二重穿插的二维层状结构。此外,对配合物的荧光性能测试表明,它们在绿光区域有荧光发射。  相似文献   

10.
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   

11.
通过水热法合成了2个金属-有机配位聚合物[Zn(boba)(bix)]n(1)和[Cd(L1)(L2)]2n·nH2O(2)(H2boba=4,4′-(丁烷-1,2-二氧基)-二苯甲酸,bix=1,4-双(咪唑基-1-基)苯,H2L1=4-(羧基甲氧基)苯甲酸,L2=2-(4-羟基)-1H-咪唑并[4,5-f][1,10]菲咯啉)。并对其进行了元素分析、红外光谱、热重和X-射线单晶衍射测定。配合物1为二维网状结构,配合物2为一维双链结构。此外,还研究了它们的荧光性质。  相似文献   

12.
通过水热法合成了2个金属-有机配位聚合物[Zn(boba)(bix)]n=(1)和[Cd(L1)(L2)]2n=·nH2O(2)(H2boba=4,4’-(丁烷-1,2-二氧基)-二苯甲酸,bix=1,4-双(咪唑基-1-基)苯,H2L1=4-(羧基甲氧基)苯甲酸,L2=2-(4-羟基)-1H-咪唑并[4,5-f][1,10]菲咯啉)。并对其进行了元素分析、红外光谱、热重和X-射线单晶衍射测定。配合物1为二维网状结构,配合物2为一维双链结构。此外,还研究了它们的荧光性质。  相似文献   

13.
Abstract. Two metal‐organic coordination polymers [Co(bmb)(btc)0.5]n( 1 ) and {[Zn(bmb)0.5(btc)0.5(H2O)] · 0.5bmb · H2O}n ( 2 ) [H4btc = benzene‐1, 2, 4, 5‐tetracarboxylic acid, bmb = 1, 4‐bis(2‐methylbenzimidazol‐1‐ylmethyl) benzene] were prepared under hydrothermal conditions. Single‐crystal X‐ray diffraction indicates that both complexes have a 2D framework structure with (4 · 62) (42 · 62 · 82) topology. Interestingly, the hydrogen bonds in 2 form a fascinating meso‐helix. The catalytic activity of 1 for oxidative coupling of 2, 6‐dimethylphenol (DMP) and the photoluminescence properties of 2 were investigated. Furthermore, the complexes were investigated by IR spectroscopy and thermogravimetric analysis.  相似文献   

14.
Three position isomers 1,2‐, 1,3‐, 1,4‐phenylenediacetate and 1,4‐bis(benzimidazol‐1‐ylmethyl)benzene (bmb) were used to assembly cadmium(II) coordination polymers, [Cd(bmb)(1,2‐phda)]n ( 1 ), {Cd(bmb)(1,3‐phda)] · 0.5(bmb)}n ( 2 ), and [Cd(bmb)0.5(1,4‐phda)]n ( 3 ), which are characterized by elemental analyses, infrared spectra (IR), thermogravimetric analysis (TGA) and single‐crystal X‐ray diffraction. Single crystal structure analysis shows that complex 1 is a two‐dimensional wave‐like layer network. Complex 2 features a (3,5)‐connected three‐dimensional frameworks with (42.6)(42.65.83) topology, whereas complex 3 shows a (4,4)‐connected three‐dimensional (4.64.7)(42.62.82) topology. The structural versatility reveals that a significant structure‐directing effect of the position of the acetate groups during self‐assembly of these coordination polymers. Moreover, luminescent properties and thermal stabilities of three complexes were discussed in detail.  相似文献   

15.
通过水热合成的方法制得具有三维超分子结构的2种配位聚合物{[Zn(L)(bpa)0.5(H2O)2]·2.25H2O}n1)和{[Cd(L)(H2O)]·2H2O}n2),其中,H3LCl为氯化5-(4-羟基吡啶基甲基)间苯二甲酸,bpa为1,2-二(4-吡啶基)乙烷。这2种化合物的结构通过单晶X射线衍射、红外光谱(IR)、元素分析、热重分析(TG)等方法进行了表征。结构解析表明:化合物1是一种梯型链式结构,并通过链间氢键作用延伸成了3D超分子网络;化合物2为含有大量一维隧道空腔的2D配位网络。此外,研究了这2种化合物的荧光性质。  相似文献   

16.
通过水热合成的方法制得具有三维超分子结构的2种配位聚合物{[Zn(L)(bpa)0.5(H2O)2]·2.25H2O}n1)和{[Cd(L)(H2O)]·2H2O}n2),其中,H3LCl为氯化5-(4-羟基吡啶基甲基)间苯二甲酸,bpa为1,2-二(4-吡啶基)乙烷。这2种化合物的结构通过单晶X射线衍射、红外光谱(IR)、元素分析、热重分析(TG)等方法进行了表征。结构解析表明:化合物1是一种梯型链式结构,并通过链间氢键作用延伸成了3D超分子网络;化合物2为含有大量一维隧道空腔的2D配位网络。此外,研究了这2种化合物的荧光性质。  相似文献   

17.
Two coordination polymers, [Cd(L1)(bib)] n (1) and [Cd(L2)(bib)0.5] n (2) [H2L1?=?5-hydroxyisophthalic acid, H2L2?=?5-methylisophthalic acid and bib?=?1,4-bis(2-methyl-imidazol-1-yl)butane], have been synthesized and characterized by IR, elemental analysis, and X-ray diffraction. Compound 1 shows a 2-D layer structure and 2 is a two-fold interpenetrated 3-D pcu topology. The results suggest that the 5-position group affects the structure of coordination polymers. Luminescence properties of 1 and 2 are investigated.  相似文献   

18.
Five new divalent metal coordination polymers containing either 1,3‐adamantanedicarboxylate (adc) or 1,3‐adamantanediacetate (ada) and pillaring dipyridyl ligands were prepared and structurally characterized by single‐crystal X‐ray diffraction. Using the V‐shaped linker 4,4′‐dipyridylamine (dpa), three new phases were isolated. {[Zn2(ada)2(dpa)2] · 4.5H2O}n ( 1 ) shows a (4,4) grid topology with embedded octameric water clusters. {[Co(ada)(dpa)(H2O)] · H2O}n ( 2 ) also manifests a 2D dimensionality, but with an intriguing novel (4)(12)(4.125) looped topology. {[Cd(adc)(H2O)2] · H2O}n ( 3 ) did not incorporate dpa ligands during self‐assembly, but exhibits an uncommon 3‐connected 83 etb network topology. [Co(ada)(ebin)]n ( 4 ) [ebin = ethanediaminebis(nicotinamide)] possesses a (3,6) triangular net based on {Co2(OCO)2} dimeric units. {[Cd(adc)(ebin)] · 2H2O}n ( 5 ) also shows dimeric units, although linked into a decorated (4,4) grid topology. Magnetic susceptibility studies of compound 4 revealed a decrease in χmT product upon cooling, ascribed to antiferromagnetic coupling concomitant with single‐ion effects [g = 2.39(2) with D = 40(3) cm–1 and J = –3.55(4) cm–1]. Compounds 1 and 5 undergo blue‐violet fluorescence upon ultraviolet irradiation; the zinc derivative 1 shows potential as a sensor for the solution‐phase detection of nitrobenzene and m‐nitrophenol. Thermal decomposition behavior of the five new phases is also discussed.  相似文献   

19.
Two new fluorescent coordination polymers based on pamoic acid and different polydentate N-donor ligands, namely {[Cd(PA)(TPTZ)(H2O)](DMF)2}n ( 1 ) and [Cd(PA)(BIB)]n ( 2 ) [H2PA = pamoic acid, TPTZ = 2,4,6-tri(2-pyridyl)-1,3,5-triazine, BIB = 1,4-bis(1-imidazolyl)benzene], were synthesized and characterized. Complex 1 showed a 1D zigzag chain structure with intramolecular hydrogen bonds. The 2D supramolecular structure in 1 was formed through π–π stacking interactions and intermolecular hydrogen bonds. Complex 2 displayed a 2D network structure. Intramolecular hydrogen bonds and π–π stacking interactions were observed in 2 . By studying the fluorescence sensing performance of two coordination polymers, complex 1 exhibited high selectivity for tracking Al3+ ion and complex 2 could discriminately detect inorganic or aliphatic amines with high selectivity.  相似文献   

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