共查询到20条相似文献,搜索用时 15 毫秒
1.
Yan-Ju Huang Liang Ni 《Journal of Inorganic and Organometallic Polymers and Materials》2011,21(1):97-102
Two 3D coordination polymers, [Cd(BDC)(Medpq)·H2O]n
1, and [Co(BDC)(Medpq)·H2O]
n
2 (BDC = terephthalic acid, Medpq = 2-Methyldipyrido[3,2-f:2′,3′-h]quinoxaline), have been synthesized by self-assembly. The
structure analyses show that both of the two coordination polymers are formed by 1D infinite chains through non-covalent interactions,
and both of them are based on 1D zigzag ones. The photoluminescent study of the coordination polymer [Cd(BDC)(Medpq)·H2O]
n
shows that it exhibit fluorescent emission bands at 567.7 nm. 相似文献
2.
Yan-Xue Chen Jin-Hui Yang Bing-Yi Chen 《Journal of Inorganic and Organometallic Polymers and Materials》2013,23(6):1233-1239
Two new Cd(II) coordination polymers, namely [Cd2(H2OA)2(μ2-H2O)(H2O)6] n ·3nH2O (1) and [Cd2(H2OA)(phen)2] n ·nH2O (2) (H4OA = 3,3′,4,4′-oxidiphthalic acid, phen = 1,10-phenanthroline) have been synthesized by combining H4OA or H4OA and phen with Cd(II) salts under hydrothermal conditions. Single-crystal X-ray diffraction analysis reveals that 1 features a hydrogen-bond directed two-dimensional (2D) layered structure constructed from alternating left- and right-handed double strand helical chains, 2 represents a one-dimensional (1D) chain structure with the phen molecules dangling on it, which is further extended into a three-dimensional (3D) supramolecular framework through strong face-to-face π···π interactions. In addition, luminescent properties of these two compounds were also investigated in the solid state at room temperature. 相似文献
3.
Ya-Juan Fan Jun-Yi Liu Shuang-Quan Zang Ying Zhou Hong-Wei Hou 《Journal of Inorganic and Organometallic Polymers and Materials》2011,21(3):718-722
Two novel metal–organic frameworks based on 1,3-bis(imidazol-1-ylmethyl)-benzene (m-bix), namely [(Cu4I4)(bix)2] n (1) and [HgI2(bix)] n (2) have been synthesized and characterized by IR, elemental analysis, thermogravimetry, luminescent properties and X-ray crystallography. The structure of compound 1 exhibits a 1D metal–organic chain composed of Cu4I4 clusters and m-bix ligands, and such chains are further united together to generate a 3D supramolecular structure through inter-chain π···π interactions. In compound 2, the HgI2-bix chains interact each other to form a layer structure through π···π interactions, then the layers are extended to 3D supramolecular architecture through intermolecular C–H···π interactions. 相似文献
4.
Zi-Ao Zong Xiang-Min Meng Xin Li Lian-Sheng Cui Yu-Hua Fan 《Journal of Inorganic and Organometallic Polymers and Materials》2016,26(3):519-526
Two supramolecular coordination polymers, [Cu(PDA)(4,4′-bibp)]n (1) and [Zn(PDA)(4,4′-bibp)]n (2) (PDA = 2,6-pyridinedicarboxylic acid and 4,4′-bibp = 4,4′-bis(imidazolyl)biphenyl), have been obtained under hydrothermal conditions. The two polymers were characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction analysis. The X-ray single crystal analysis revealed that two complexes exhibit different supramolecular architectures. The photocatalytic studies indicate complex 1 is a good candidate for the photocatalytic degradation of methylene blue, rhodamine B and methylene violet. The photoluminescence behaviour of complex 2 was also discussed. 相似文献
5.
6.
Wen-Wen Shan Xiao Mi Jia-Yi Pu Shi-Le Mei Kai-Hui Li Chong-Zhen Mei 《Journal of Inorganic and Organometallic Polymers and Materials》2013,23(3):533-538
A new metal–organic framework {[Cd(L)(4,4′-bpy)]2·5H2O} n (1) had been synthesized by hydrothermal reaction of 5-(oxidediphenylphosphino)isophthalic acid, Cd(II) nitrate, NaOH and 4,4′-bipyridine (4,4′-bpy) as co-ligand. The novel compound was characterized by single crystal X-ray diffractometry as well as FTIR spectrum. Adjacent eight-member (C2Cd2O4) rings are connected each other through pairs of L2? ligands to result in a 1D double chain. Such ribbons are interconnected together by 4,4′-bpy to generate a 2D pillared layer, which are further held together by rich O–H···O hydrogen bonds to give a 3D supramolecular network. Solvent water molecules play an important role to bridge adjacent layers to form a 3D supramolecular architecture. The luminescence property and thermogravimetric analysis of title complex were investigated. 相似文献
7.
Ai-Yin Wang Jie Wang Shokufeh Aghabeygi Jia-Guo Wang Hong-Ping Xiao Ali Mosali 《Journal of Inorganic and Organometallic Polymers and Materials》2011,21(3):700-705
Three new Cu(II), Mn(II), and Zn(II) coordination polymers with 4,4′-bipyridine (4,4′-bipy) and 2-sulfobenzoic acid (2-H2sb) ligands, [M(4,4′-bipy)(2-sb)(H2O)]n, have been synthesized and characterized by IR spectroscopy and elemental analyses. The structures were determined by single-crystal
X-ray crystallography. The structural studies show that the metal atoms have six-coordinate geometry with a distorted octahedral
environment constructed with 4,4′-bipy and 2-sb2− linkers stacked over each other to generate a two-dimension motif. Self-assembly of these compounds in the solid state is
likely caused by coordination and hydrogen-bonds. While polymers containing Zn(II) and Mn(II) have analogous structures, the
Cu(II)-containing nano-porous soft metal–organic framework presents a different structure. 相似文献
8.
Momeni Badri Z. Hosseini S. Farzad Janczak Jan 《Journal of Inorganic and Organometallic Polymers and Materials》2022,32(2):455-468
Journal of Inorganic and Organometallic Polymers and Materials - Dimethyltin(IV) complex SnMe2(NCS)2 form two coordination polymers when react with the tetradentate 2,2′-bipyrimidine (bpym)... 相似文献
9.
10.
Süleyman Köytepe M. Hurşit Demirel Turgay Seçkin 《Journal of Inorganic and Organometallic Polymers and Materials》2013,23(5):1104-1112
A novel metallo-supramolecular polytopic ligand was synthesized from the attachment reaction involving an amino group-functionalized multi-wall carbon nanotube and 4-chloro-2,2′:6′,2″-terpyridine used for the preparation of metallo-supramolecular polymers with Co(II) or Ni(II) ions. Different colors were observed depending on either the ligands or the metal ions in this type of supramolecular assembly. The created supramolecular polymers were characterized by means of structure, morphology, and stimuli-responsive performance employing scanning electron microscopy, amperometric techniques, UV–Vis and Fourier transform infrared spectroscopy. UV–Vis spectroscopy and cyclic voltammetry studies confirmed that both the optical and electrochemical properties of metallo-supramolecular materials are affected by the substituent at the pyridine periphery. 相似文献
11.
Summary Pervaporation performance of polyimide (PI) membrane from 3,3, 4,4-benzophenone tetracarboxylic dianhydride (BTDA) and 4,4-oxydianiline (ODA) was investigated at 80wt% feed acetic acid concentration and at 65°C. Imide contents in PI film were estimated by thermogravimetric analysis (TGA) method. The separation factor of PI membrane increases with the degree of imidization, while the flux was almost constant. The separation factor toward water through PI-94 membrane was about 417 with the flux of 47 g/m2. hr measured at 65°C and with 80wt% acetic acid as a feed. PI-94 showed the best pervaporation performance toward the separation of water from acetic acid solution among the PI membranes investigated. The swelling behaviors at various feed concenration were also examined. 相似文献
12.
Chunlin Ma Qi Zhu Rufen Zhang 《Journal of Inorganic and Organometallic Polymers and Materials》2012,22(5):1206-1212
The synthesis and structural characterization of four novel triorganotin(IV) complexes, {(R3Sn)2[C2H4S(COO)2]} n (R = Me: 1), {(R3Sn)4[C2H4S(COO)2]2} n (R = nBu: 2), {(R3Sn)2[C4H8S(COO)2]} n (R = Me: 3; nBu: 4) were obtained by the reaction of 2,2′-thiodiglycolic acid, 3,3′-thiodipropionic acid and the corresponding R3SnCl (R = Me, nBu) with potassium hydroxide in methanol. All the complexes were characterized by elemental analysis, Fourier transform infrared and nuclear magnetic resonance (1H, 13C, 119Sn) spectroscopies, X-ray crystallography and thermogravimetric analyses. The crystal structures show that 1 has 2D network structure in which 2,2′-thiodiglycolic acid acts as a tetradentate ligand coordinating to the trimethyltin(IV) ions. Complexes 2, 3, and 4 are 3D metal-organic framework structures in which the deprotoned acids act as a tetradentate ligand afforded by four oxygen atoms. 相似文献
13.
Pengfei Wang Guozhi Wu Jiaojiao Yuan Xin Wang 《Journal of Inorganic and Organometallic Polymers and Materials》2013,23(5):1153-1158
Two new three-dimensional pillared layered coordination polymers, [M(2,5-PDC)H2O]n [M(II) = Sr(1), Ba (2)] were synthesized under hydrothermal conditions using alkaline–earth metal centers strontium and barium with 2,5-pyridinedicarboxylic acid as the organic ligand. The structures of two compounds have been determined by single-crystal X-ray diffraction analyses and further characterized by IR spectrum, elemental analyses, powder X-ray diffraction, and thermogravimetric analyses. The compounds are isostructural, confirmed by their powder XRD measurements. They feature a pillared layered framework structures. Within the layer, the dinuclear [M2O2] units through the bridge of the coordination water molecule are found, which are connected by carboxylate groups along the a- and b-axis, respectively. The layers are further pillared by the pyridyl groups of the 2,5-PDC2? ligands. Furthermore, the luminescent properties of two compounds have also been investigated in the solid state. 相似文献
14.
Hai-Hua Li Ning Ma Kai-Hui Li 《Journal of Inorganic and Organometallic Polymers and Materials》2012,22(6):1320-1324
A novel metal–organic framework {[Cu(H2bptc)(cbpy)(H2O)]·(H2O)} n (1) has been hydrothermally synthesized through reaction of 1,1′-biphenyl-2,2′,3,3′-tetracarboxylic acid (H4bptc) with Cu(II) salt in the presence of ancillary nitrogen ligand 5,5′-dimethyl-2,2′-bipyridine (cbpy), and its structure was determined by X-ray diffraction and characterized by elemental analysis, and IR spectrum. The title compound crystallizes in monoclinic space group P21/c. Both right- and left-handed helices are detected in the structure. In the ab-plane, adjacent chains are homochiral and parallel to each other, which are connected together by hydrogen bonds to form a 2D supramolecular structure. The supramolecular layers with opposite chirality are arranged alternatively along the c-axis to form a 3D mesomeric supramolecular structure through π···π interactions. The thermal stability of the complex 1 was studied by thermal gravimetric and differential thermal analysis. 相似文献
15.
Farzin Marandi Masoumeh Mazrehali Sima Pourbeyram Ching Kheng Quah Hoong-Kun Fun 《Journal of Inorganic and Organometallic Polymers and Materials》2014,24(6):940-947
Two new cadmium(II) and lead(II)-thiocyanato coordination polymers with 5,5′-dimethyl-2,2′-bipyridine (5,5′-dm-2,2′-bpy) as chelating ligands were synthesized and characterized by elemental analysis, IR and 1H NMR spectroscopy and by X-ray crystallography. Thermal and electrochemical properties were also studied as well. These complexes have formed formula [Cd(5,5′-dm-2,2′-bpy)(NCS)2]n (1) and [Pb(5,5′-dm-2,2′-bpy)(CH3COO)(NCS)]n (2). The coordination numbers of CdII in 1 and PbII in 2 are six (CdN4S2) and seven (PbN3O3S2), respectively. In 2, “stereo-chemically active” electron lone pairs and the coordination spheres were hemidirected. Bridging properties of thiocyanato anions in 1 and 2 created one- and two-dimensional coordination polymers, respectively. The supramolecular features in these complexes were guided and controlled by weak directional intermolecular interactions. 相似文献
16.
One new title compound [Mn3(BIBP)(sdb)(NO2−)2(H2O)2]n·2DMF (1) (BIBP = 4,4′-bisimidazolylbiphenyl, sdb = 4,4′-sulfonyldibenzoic acid) has been synthesized under hydrothermal condition. The title compound was characterized by IR spectra, thermal analysis, single crystal and powder X-ray diffraction. Magnetic susceptibility measurements indicate that compound 1 exhibits antiferromagnetic coupling interaction. 相似文献
17.
Chunyan Kong 《Journal of Inorganic and Organometallic Polymers and Materials》2011,21(1):189-194
Three new coordination polymers, [Ni(2,4′-oba)(1,10-phen)]
n
(1), {[Ni (2,4′-Hoba)2(4,4′-bipy)(H2O)2]·2H2O}
n
(2) and [Zn(2,4′-oba) (4,4′-bipy)]
n
(3) (2,4′-H2oba = 2-(4-carboxyphenoxy)benzoic acid, 1,10- phen = 1,10-phenanthroline, and 4,4′-bipy = 4,4′-bipyridine) have been obtained
by hydrothermal synthesis. The framework structures of these polymeric complexes have been determined by single-crystal X-ray
diffraction studies. Complex 1 exhibits double-helical chains formed by π–π stacking interactions from the phenyl rings of the 1,10-phen ligands. Complex 2 forms a two-dimensional supramolecular architecture directed by hydrogen bonding. Complex 3 exhibits a three-dimensional structure; Schl?fli symbol of {44·610·8}. The luminescent property of compound 3 is discussed. 相似文献
18.
Construction of Two New Metal–Organic Frameworks from Pamoic Acid and N-Containing Auxiliary Ligands
Chang-wei Lv Jing Li Zheng Hou Ming-kai Li 《Journal of Inorganic and Organometallic Polymers and Materials》2014,24(2):388-394
Two new metal–organic frameworks; namely, [Cd2(pam)2(bpe)1.5(DMF)2(H2O)] n ·2n(DMF) (1) and [Cd(pam)(bix)] n (2) (H2pam = pamoic acid, bpe = 1,2-di(4-pyridyl)ethylene, bix = 4,4′-bis(imidazol-1-ylmethyl)benzene, DMF = N,N′-dimethylformamide), were solvothermally synthesized via varying the auxiliary ligand. Single crystal X-ray diffraction analysis reveals that compound 1 shows a 2D→3D polythreaded motif based on (3,4)-connected 2D sheets, while compound 2 features a 4-connected sql tetragonal plane net, which further extended into a 3D supramolecular framework through intermolecular CH···π interactions. In addition, the luminescent and thermal stabilities properties of these two compounds were investigated. 相似文献
19.
Cao-Yuan Niu Zhen-Liang Pan Yu-Li Dang Chao-Ling Feng Chun-Hong Kou 《Journal of Inorganic and Organometallic Polymers and Materials》2011,21(3):611-618
Bilayered diffusion and hydrothermal synthetic methods using pyridine (py) and 2,6-dimethylpyrazine (dmpz) as weak bases and small terminal ligands generated two Cd(II) and Co(II) 1D coordination polymers with dinuclear metal clusters as secondary building units (SBUs) from an organic bridging ligand, 1,1′-biphenyl-3,3′-dicarboxylic acid (H2 L). They are {[Cd2(L)2(py)4] (py)(CH3OH)} n (1) and [Co2(L)2(dmpz)4(H2O)] n (2). Compounds 1 crystallizes in the monoclinic space group P2(1)/c, while 2 crystallizes in the triclinic space group P-1. Especially, compound 2 possesses the 1D chain structure that contains two linked left-handed and right-handed helices. Fluorescent measurements for 1 display strong blue light emissions with the maximum emission at 396 nm with the excitation of 320 nm. Magnetization study shows the existence of weak antiferromagnetic coupling for 1 with the negative −E 2/k value of −1.3 K. 相似文献
20.
İsmet Kaya Mehmet Yıldırım 《Journal of Inorganic and Organometallic Polymers and Materials》2008,18(3):325-333
In this study novel metal coordination polymers were synthesized such as poly-4,4′-oxybis[N-(3,4-dihydroxybenzilidene)aniline]
(P-3,4-HBA) containing Cu, Co, Pb, Ni, Zn, Cd, Cr, Mn and Zr metals in the polymer backbone. The polymers are abbreviated
as P-3,4-HBA-Cu, P-3,4-HBA-Co, P-3,4-HBA-Pb, P-3,4-HBA-Ni, P-3,4-HBA-Zn, P-3,4-HBA-Cd, P-3,4-HBA-Cr, P-3,4-HBA-Mn and P-3,4-HBA-Zr,
respectively. To confirm the structures FT-IR, UV-vis, 1H and 13C-NMR spectral techniques were used. Additional characterization of the polymers was made by size exclusion chromatography
(SEC), TGA-DTA and solubility tests. By TGA analysis, P-3,4-HBA-Zr was the most stable polymer against thermal degradation
among those synthesized. In addition, it was found that, with exception of P-3,4-HBA-Cr, the other synthesized polymers have
little solubility in many organic solvents and water. According to SEC results, P-3,4-HBA-Cr has a single fraction containing
21–22 mer units. Electrical conductivities of the monomer and polymers were measured by the four-point probe technique. The
polymers were semiconductors; and, some of their conductivities can be increased via doping with iodine. According to the
electrical conductivities of the undoped P-3,4-HBA-Cr and P-3,4-HBA-Zr polymers have nearly ten-times higher conductivities
in comparison to the others. From UV-vis measurements, the optical band gaps (E
g
) of 3,4-HBA and P-3,4-HBA-Cr were 2.58 and 2.39 eV, respectively. This result indicates that P-3,4-HBA-Cr has a lower band
gap and consequently higher electrical conductivity than 3,4-HBA. Thus, with good solubility, high electrical conductivity
and high thermal stability P-3,4-HBA-Cr may be considered as the most useful metal coordination polymer among those synthesized. 相似文献