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1.
《Inorganic chemistry communications》2008,11(11):1347-1351
Hexanuclear 4d–4f heterometallic coordination polymers, [Ln2Ag4(IN)5(ox)2(NO3)(H2O)2 · 3H2O] [Ln = Eu (1), Tm (2); IN = isonicotinate and ox = oxalate], have been synthesized by hydrothermal reaction of mixed organic ligands and metal salts. Both structures display the same unusual 3D heterometallic coordination frameworks based on rare zigzag lanthanide–oxalate–silver chains, Ag2(IN)3 units and IN linkers. The photoluminescent properties of complex 2 were studied. 相似文献
2.
《Inorganic chemistry communications》2002,5(5):366-368
Two novel three dimension Ln(III)–Cu(II) coordination polymers [Gd2Cu(pydc)4(H2O)6]n and [Sm2Cu3(pydc)6(H2O)6]n were prepared by the hydrothermal reactions of CuO, Ln2O3 (Ln = Gd, Sm), H2pydc (H2pydc = 2,4-pyridinedicarboxylic acid) and characterized by single-crystal X-ray diffraction analysis. 相似文献
3.
Anindita Mukherjee Rajesh Chakrabarty Goutam Kumar Patra 《Inorganic chemistry communications》2009,12(12):1227-1230
Two new coordination polymers [Cu(L1)2]n(ClO4)n·2nH2O (1), [Cu(L2)2]n(ClO4)n·2nH2O (2) of polydentate imine/pyridyl ligands, L1 and L2 with Cu(I) ion have been synthesized and characterized by single crystal X-ray diffraction studies, elemental analyses, IR′ UV–vis and NMR spectroscopy. They represent 3-dimensional, sixfold interpenetrating diamondoid network structures having large pores of dimension, 35 × 21 Å2 in 1 and 38 × 19 Å2 in 2, respectively. 相似文献
4.
Three Ln–Na heterometallic 3D polymers based on sulfate anion, [LnNa(SO4)2(H2O)] (Ln = Gd (1); Tb (2); Dy (3)), were synthesized under hydrothermal conditions, which are the first examples of Ln–Na sulfates. These compounds crystallize in the trigonal P3121 space group, and display a 6-connected sma topological structure with a Schäfli symbol of (410·65). The characteristic analyses reveal that compounds 1–3 display excellent thermal stability, and all exhibit antiferromagnetic interactions between the metal centers. The luminescent properties of 2 and 3 show the characteristic terbium and dysprosium luminescence. The strong luminescence in the green light (5D4 → 7F5) region for 2 and blue light (4F9/2 → 6H15/2) region for 3 indicate that they may be excellent candidates for green or blue fluorescent materials. 相似文献
5.
Xiao-Ming Lin Yin Ying Li Chen Hua-Cai Fang Zheng-Yuan Zhou Qing-Guang Zhan Yue-Peng Cai 《Inorganic chemistry communications》2009,12(4):316-320
Three 4d–4f heterometallic polymers, Ln2Ag2(Hpydc)2(pydc)2(ox) · 4H2O (Ln = Nd (1), Eu (2) and Er (3); H2Pydc = pyridine-3,5-dicarboxylic acid, H2ox = oxalic acid), have been successfully synthesized under hydrothermal condition and structurally characterized. Single-crystal X-ray diffraction analyses reveal that three compounds are isomorphous and exhibit 3D pillar-layered coordination frameworks constructed from two-dimensional lanthanide-carboxylate layers and [Ag(pydc)]? pillars. Furthermore, the luminescent property of compound 2 was studied. 相似文献
6.
Guang-Xiang Liu Heng Xu Xiao-Ming Ren Sadafumi Nishihara Yan Wang 《Inorganic chemistry communications》2009,12(6):498-501
Two novel coordination polymers, [Zn2(FA)(4,4′-bipy)2]·2H2O (1) and Cd2(FA)(2,2′-bipy) (2), (H4FA = 4,4′-(hexafluoroisopropylidene)diphthalic acid, 4,4′-bipy = 4,4′-bipyridine, 2,2′-bipy = 2,2′-bipyridine), have been synthesized under hydrothermal conditions, and their structures were determined by single-crystal X-ray diffraction. Polymer 1 features an unusual three-dimensional (3D) network with (4 · 62 · 83)(42 · 62 · 82) topology. Polymer 2 has a complicated 3D framework and crystallizes in non-centrosymmetric space group (Fdd2) belonging to polar point group (C2v), which displays a strong SHG response and ferroelectric properties. Moreover, the luminescent properties of 1 and 2 have also been investigated. 相似文献
7.
《Inorganic chemistry communications》2008,11(10):1155-1158
Two novel coordination polymers containing Cd(II) and Co(II) metals, connected via 1,1′-(2,2′-oxybis(ethane-2,1-diyl))bis(1H-imidazole) (L) ligand, have been synthesized. Compound [Cd(L)2(p-BDC)] · 2H2O (1) (p-BDC = 1,4-benzenedicarboxylate anion) is a three-dimensional interdigitated supramolecular architecture. Compound [Co(L)(BTCA)0.5] (2) (BTCA = 1,2,3,4-butanetetracarboxylate anion) possesses a unique (3,4)-connected 3D framework with (83)2(85 · 10) topology. 相似文献
8.
《Inorganic chemistry communications》2008,11(11):1409-1411
The self-assembly of nicotinic acid and sodium oxalate with mixed 3d–4f metal salts under hydrothermal conditions gave three isostructural 3D 3d–4f coordination polymers, [LnCu(nic)2(ox)] · xH2O [Ln = La, x = 1 (1); Ln = Eu, x = 2 (2); Ln = Gd, x = 2 (3)] [ox = oxalate, nic = nicotinate]. All three structures exhibit same unusual 3D microporous heterometallic coordination frameworks that are built up by rare tetranuclear Ln2Cu2 clusters and mixed ox and nic linkers. Furthermore, the luminescent property of complex 2 has also been investigated. 相似文献
9.
Hydrothermal reactions of AgNO3, K3[Fe(CN)6] with N-heterocyclic ligands afforded three novel Ag(I)–cyanide coordination polymers, [Ag2(CN)2(tpt)]n (1), {[Ag(CN)(bpe)0.5][Ag(CN)]}n (2) and [Ag(CN)(btmb)0.5]n (3) (tpt = 2,4,6-tris(4-pyridyl)-1,3,5-triazine, bpe = 1,2-bis(4-pyridyl)ethane, btmb = 1,2-bis(1,2,4-triazol-1-ylmethyl)benzene). In complex 1, two Ag(CN) linear chains are bridged by bidentate tpt ligand to form a ladder-like structure, which are further connected by AgAg metal bond to generate a 2D polymeric network. Complex 2 is an interesting 3D supramolecular architecture assembled by 2D [Ag1(CN)(bpe)0.5]n network and linear [Ag2(CN)]n chain combined by strong AgAg metal bond. Complex 3 is a 1D ladder-like double-chain polymer constructed from Ag–cyanide linear chains and btmb spacer, which is further extended to a 2D supramolecular network by Ag–Ag weak interaction. The Ag–Ag metal interactions play important roles in the construction of three coordination polymers. Complexes 1 and 2 are respectively thermally stable at 300 and 180 °C. Complexes 1 and 3 emit strong blue luminescence. 相似文献
10.
Yun-Zhi Tang He-Rui Wen Zan Cao Xiao-Wei Wang Shuai Huang Chang-Lin Yu 《Inorganic chemistry communications》2010,13(8):924-928
The 3D heterometallic polymeric complex 1 {[Nd2Cu2(L)2 (OXA)4·2(2H2O)]·2(3H2O)}n (HL = 2, 2′-bipyridine-3-carboxyic acid, OXA = oxalate) was obtained from hydrothermal reaction of Nd2O3, Cu(ClO4)2, HL and oxalic acid in the presence of ethanol and water. X-ray single crystal diffraction investigation of the polymeric complexes {[Nd2Cu2(L)2(OXA)4·2(2H2O)]·2(3H2O)}n exhibits an interesting and novel topological structure. 相似文献
11.
Wen-Bin Sun Peng-Fei Yan Guang-Ming Li Ju-Wen Zhang Ting Gao Masayuki Suda Yasuaki Einaga 《Inorganic chemistry communications》2010,13(1):171-174
Three one-dimensional (1D) heterospin trimetallic chain-like polymers [{LCu(H2O)}Ln(MeOH)(H2O)2{(μ-CN)2Fe(CN)4}]·2H2O (1, Ln = La; 2, Ln = Nd; 3, Ln = Gd) were prepared by substitution of the nitrato ligands in [LCuLn] complexes with [Fe(CN)6]3? ions (H2L = N,N′-bis(3-methoxysalicylidene)propane-1,2-diamine). Single-crystal X-ray diffraction analysis revealed that the methyl on the salen-type ligand impeded the connection between cyanide groups and Cu(II) ions efficiently. Consequently, three novel one-dimensional (1D) trimetallic chain-like polymers were obtained with the linker [Fe(CN)6]3? ions interacting only with the lanthanide ions. The magnetic investigation for 3 indicated a ferrimagnetic chain may form. 相似文献
12.
Ru(II)–CO complexes of thioarylazoimidazoles: Syntheses,structures, spectroscopy and DFT calculation
T.K. Mondal P. Raghavaiah A.K. Patra C. Sinha 《Inorganic chemistry communications》2010,13(2):273-277
The complexes, cis-(CO)-trans-(Cl)-[Ru(SRaaiNR)(CO)2Cl2] (2) and trans-(Cl)-[Ru(SRaaiNR)(CO)Cl2] (3) (SRaaiNR = 1-alkyl-2-{(o-thioalkyl)phenylazo}imidazoles; R = Me (1a) and Et (1b)) have been synthesized and characterized. The structural confirmation is achieved by single crystal X-ray structure determinations. The complexes show Ru(III)/Ru(II) couple and ligand reductions. Electronic structure and spectral properties of the complexes have been explained with the DFT and TDDFT calculation. 相似文献
13.
A series of unusual three-dimensional (3D) 3d–4f cyanide heterometallic coordination polymers (HCPs), namely [Ln1.5Cu3(ina)3(ga)(CN)1.5(X)(H2O)] [Ln = Dy, X = Cl (1), Ln = Tb, X = Br (2), Ln = Dy, X = Br (3); ina = isonicotinic acid; ga = glycolic acid] have been synthesized via hydrothermal reaction and characterized by single crystal X-ray diffraction, elemental analyses, FT–IR spectroscopy, powder X-ray diffraction (PXRD) and thermogravimetric analyses (TGA). X-ray structural analysis reveals that HCPs 1 to 3 are constructed from the linkage between Ln–organic layer motifs and double-stranded cyano-containing Cu-inorganic ribbon motifs. In these complexes, the carboxyl group and hydroxyl group of H2ga are all deprotonated and the coordinated ga ligands adopt a very interesting μ3-kO:kO,O′:kO′,O″ coordination mode. Moreover, magnetic properties of HCP 1 were investigated. 相似文献
14.
Chloromethylated polysulfone (CMPSF) was directly transformed into aldehyde (AL) group-functionalized polymer via Kornblum reaction, and then polysulfone was modified to a bidentate Schiff base (BS) type macromolecular ligand, PSF-ASB, via Schiff base reaction with 3-aminopyridine as reagent. Afterward, luminescent binary and ternary polymer-rare earth complexes, PSF-(ASB)3-Eu (III) and PSF-(ASB)3-Eu(III)-(Phen)1 (o-phenanthroline, Phen), were prepared. The macromolecular ligand PSF-ASB and the complexes were fully characterized by FTIR, 1H-NMR, UV spectroscopy and TGA. The photoluminescence properties and mechanisms of the complexes were investigated in depth. The experimental results show that the macromolecular ligand PSF-ASB itself emits strong fluorescence. However, after coordinating to Eu(III) ion, its fluorescence intensity weakens remarkably, implying that there occurs an intramolecular energy transfer. The complexes of Eu(III) ion exhibit stronger characteristic fluorescence emission of Eu(III) ion, whereas the complex of Tb(III) ion has no photoluminescence property, indicating that the bonded ligand ASB can effectively sensitize the fluorescence emission of Eu(III) ion and suggesting that the triplet state energy of the bonded ligand ASB is well matched with the resonant state level of Eu(III) ion. More importantly, relative to general polymer-rare earth complexes, for these luminescent polymer-rare earth complexes prepared in this study, the backbone of the macromolecular ligand PSF-ASB also takes part in the sensitization towards Eu(III) ion because of that half of aryl rings of a greater π bond conjugate system of ASB comes from PSF skeleton, displaying a great difference with other luminescent polymer-rare earth complexes. 相似文献
15.
Li-Min Zhao Bin Zhai Dong-Liang Gao Wei Shi Bin Zhao Peng Cheng 《Inorganic chemistry communications》2010,13(9):1014-1017
Three new nickel(II) complexes [Ni2(btec)(azopy)2(H2O)8]·2H2O (1), {[Ni(H2btec)(azopy)(H2O)2]·(azopy)}n (2) and {[Ni4(btec)2(azopy)3(H2O)10]·8H2O}n (3) (H4btec = 1,2,4,5-benzenetetracarboxylic acid; azopy = 4,4′-azobispyridine) have been synthesized by tuning the reaction temperature and the metal–ligand ratio. They were characterized by single-crystal X-ray diffraction and elemental analysis. 1 shows a binuclear structure, 2 exhibits a 2D grid, and 3 features an interesting 3D framework with (63)(4.62)(42.62.82) topology formed by two types of interlocked 2D layers. 相似文献
16.
A class of 3s–5d–4f mixed metal substituted sandwich-type arsenotungstates [H2N(CH3)2]8H3[LnNa(H2O)4(OH)WO(H2O) (B-α-AsW9 O33)2]·8H2O [Ln = LaIII (1), CeIII (2), PrIII (3)] have been isolated from an aqueous solution reaction system (pH = 4) of Na2WO4·2H2O, C2H7N·HCl, NaAsO2 and Ln(NO3)3·6H2O and structurally characterized by elemental analyses, IR spectra, UV spectra and single-crystal X-ray diffraction. It is the most prominent in 1–3 that the [LnNa(H2O)4(OH) WO(H2O)(B-α-AsW9O33)2]11 − polyanion consists of two trivacant Keggin [B-α-AsW9O33]9 − moieties linked by one [WO(H2O)]4 + group and a dimeric [LnNa(H2O)4(OH)]3 + group resulting in the special 3s–5d–4f mixed metal substituted sandwich-type assembly. Interestingly, lanthanide and sodium ions simultaneously occupy the two positions located at the central belt of 1–3 with the site occupancy of 50% for each position. Moreover, the electrochemical and electrocatalytic properties of only 1 and 2 have been measured by cyclic voltammetry (CV) in 0.5 mol·L− 1 Na2SO4 + H2SO4 aqueous solution. 1 and 2 illustrate electrocatalytic activities for the hydrogen peroxide reduction. 相似文献
17.
《Journal of the European Ceramic Society》2003,23(14):2443-2448
Structural features and microwave dielectric properties of LnMO3–CaTiO3 samples (where Ln stands for La or Nd, M stands for Al or Ga) are studied. Solid solutions with the rhombic perovskite structure are shown to be formed with increasing molar concentration of LnMO3 up to ∼35% (for Ln–Nd, M–Al) or ∼40% (for Ln–La, M–Ga). Further increase of the neodymium aluminate or lanthanum gallate molar content in the solid solution up to 70% leads to formation of solid solutions with the tetragonal perovskite structure. A family of promising ceramics for application in the microwave technology with dielectric permittivity lying within the range from 43 to 48, the dielectric permittivity temperature coefficient being near to zero, and heightened quality factor (Q·f ⩾40,000 GHz) are obtained. 相似文献
18.
19.
Two novel Ln–Ag coordination compounds with the formula [LnAg2(IN)4(OAC) · 5H2O] · 2H2O (Ln = Gd 1, Eu 2; HIN = isonicotinic acid; HOAC = acetic acid) have been synthesized under hydrothermal condition and characterized by single-crystal X-ray diffraction, thermal analysis, IR absorption spectroscopy, ultraviolet excitation and emission spectrum. The two compounds show isostructural architectures and exhibit an unusual 1-D structure, which is formed by the linkages of Ag–Ag. 相似文献
20.
Yan-Hong Xu Ya-Qian Lan Ya-Hui Zhao Dong-Ying Du Guang-Juan Xu Kui-Zhan Shao Zhong-Min Su Yi Liao 《Inorganic chemistry communications》2009,12(2):169-172
Two Zn(II)-2,2′-biimidazole derivative supramolecular isomers 1 and 2 formulated as [Zn(L)] · 2H2O (H2L = 4,4′-(1H,1′H-2,2′-biimidazole-1,1′-diylbis(methylene))dibenzoic acid) have been synthesized, and structurally characterized by elemental analysis, IR spectroscopy, single-crystal X-ray crystallography. Complex 1 exhibits a 2D four-connected network with (43.63) topology when the zinc center and the L2? ligand act as four-connected nodes (or a distorted (4,4) grid if the [Zn2(imidazole)4] units are considered as four-connected nodes). Complex 2 shows a novel four-connected twofold interpenetrated net with (42.62.82) topology when the zinc center and the L2? ligand act as four-connected nodes (or a twofold interpenetrated α-Po topology when [Zn2(imidazole)4] units are identified as six-connected nodes). Moreover, complexes 1 and 2 both exhibit strong luminescent properties at room temperature. 相似文献