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1.
《Inorganic chemistry communications》2007,10(6):685-689
Coordination polymers [Zn(imc)(L1)] · H2O, (1, imc = iminodiacetate, L1 = bis(N-imidazolyl)methane) [Zn(hba)2(L2)]2 · EtOH · 3H2O, (2, hba = p-hydroxybenzoate, L2 = bis(N-benzimidazolyl)methane), [Cd(mal)(H2O)(L3)](3, L3 = 1,4-bis(N-imidazolyl)butane, mal = maleate) have been prepared and structurally characterized. Complex 1 consists of hexa-coordinated central Zn ions and exhibits 2D network structure. The Zn atoms in 2 have tetrahedral coordination geometry, and are linked by bis(imidazolyl) ligands into 1D chain structure. The cadmium ions in 3 are hepta-coordinated with pentagonal bipyramidal geometry. Complex 3 displays 2D grid structure. The TGA showed that the coordination polymers are stable up to 200 °C. All the three complexes are emissive at room temperature in their solid state. 相似文献
2.
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
3.
Three coordination polymers, namely, {[Zn(L)(BPY)]·DMF·H2O}n (1), {[Zn(L)(TPY)]·0.5H2BDC·H2O}n (2), {[Cd(L)(H2O)2]·DMF}n (3), have been synthesized based on a rigid linear carboxylate ligand (H2L = 2′,5′-dimethoxy-[1,1′:4′,1″-terphenyl]-4,4″-dicarboxylic acid) and different lengths of pyridine ligands (TPY = 4,3′:5′,4″-terpyridine; BPY = 4,4′-bipyridine). These complexes have been characterized by single crystal X-ray diffraction, infrared spectroscopy, thermogravimetry, elemental analysis, and powder X-ray diffraction measurements. Complex 1 is a 6-connected 3-fold interpenetrating pcu net with point symbol {412 ∙ 63}, 2 and 3 can be simplified as 4-connected sql nets with point symbol {44 ∙ 62}. In addition, their photoluminescent properties are also investigated in detail. 相似文献
4.
A new cucurbit [6]uril based compound {[Cd2Cl2(INA)2(HCOO)2(H2O)2](CB [6])·2(HCOOH)·5H2O}(CCUT-101) was synthesized by the solvothermal reaction of cadmium chloride, cucurbit[6]uril (CB[6]), and isonicotinic acid (HINA). X-ray diffraction analysis indicated that coordination of INA− with the Cd2 + resulted in the formation of some one-dimensional wave-like chains, which connected with CB[6] by π ⋯ π stacking and hydrogen bonding, and further extended to a 2D layer. The luminescence behaviors and sensing properties of CCUT-101 in different solvents were carried out. 相似文献
5.
Based on the self-assembly of the asymmetric bis-Schiff-base ligand H2L (H2L = 4-((E)-(2-((E)-3,5-dibromo-2-hydroxybenzylideneamino)phenylimino)(phenyl)methyl-1-(4-chlorophenyl)-3-methyl-1H-pyrazol-5-ol) and Zn(OAc)2·2H2O, a new [Zn(L)] (1) was obtained and shown to efficiently catalyze the coupling of CHO (cyclohexene oxide) and CS2 (carbon disulfide) in activation with [PPN]Cl (PPN+ = bis(triphenylphosphoranyidene)-ammonium), n-Bu4NBr or n-Bu4NI, where both poly[thio]carbonates and cyclic [thio]carbonates were produced, and the strong O/S exchange afforded the limited formation of trithiocarbonate in the cyclic [thio]carbonate byproducts. 相似文献
6.
《Inorganic chemistry communications》2003,6(8):1144-1147
The hydrothermal reactions of Zn(ClO4)2 · 6H2O and Cd(ClO4)2 · 6H2O with the ligand N,N′-bis(pyridylcarbonyl)-4,4′-diaminodiphenyl ether (L) afford two one-dimensional (1D) coordination polymers, ([CdL(ClO4)2 · (H2O)2] · 2H2O) (1) and [ZnL(ClO4)2 · (H2O)2] · 2H2O, (2) having a nanoporous M2L2 rhombohedral molecular square with an approximately accessible cavity of 12.9 × 12.9 (1) and 12.7 × 12.7 (2) Å without any interpenetrations. Both 1 and 2 are isostructural and display very strong blue fluorescent emission in the solid state at room temperature. 相似文献
7.
《Inorganic chemistry communications》2007,10(7):753-756
Two novel metal–organic frameworks, [Cu(tpt)(bdc)1/2]n · nH2O (1) and [Zn(tpt)(bdc)1/2I]n (2) (tpt = 2,4,6-tris(4-pyridyl)-1,3,5-triazine, H2bdc = 1,4-benzenedicarboxylic acid), have been prepared by hydrothermal reactions. In complex 1, Cu(I) center is in a trigonal coordination environment with bidentate tpt coordinating Cu(I) atoms to form 1D zigzag chains, and bdc ligand links the zigzag chains to form a 2D layered structure. In complex 2, Zn(II) center is in a trigonal–pyramidal environment with bidentate tpt coordinating Zn(II) atoms to form zigzag chains, and bdc links the zigzag chains to form metal–organic framework which contains interesting hexagonal nano-channels. 相似文献
8.
《Inorganic chemistry communications》2005,8(8):746-750
Two new helical Cu(II) coordination polymers, [Cu(2,2′-bpy)(Hsgly)]Cl · 2H2O(H2sgly = N-(2-hydroxylbenzyl)glycine) (1) and [Cu(2,2′-bpy)(Hsala)](NO3) · 2H2O(H2sala = N-(2-hydroxylbenzyl)-l-alanine) (2) were synthesized. Single crystal X-ray diffraction analysis indicated that both complexes showed helical chains arrangement of Cu(II) centers bridged by carboxyl groups. The magnetic measurements showed complex 1 exhibited ferromagnetic interaction while there was no interaction between the Cu(II) centers in complex 2. 相似文献
9.
The reaction of 2-hydroxyphenylpropanone oxime (Et-H2salox) with Mn(NO3)2·4H2O, NEt3 and 1,3-bis(4-pyridyl)propane-N,N′-dioxide (bppo) in EtOH/H2O mixture afforded a one-dimensional coordination polymer with the formula [Mn3O(Et-salox)3(bppo)(MeOH)(H2O)3](NO3)0.5(Et-Hsalox)0.5·MeOH·H2O (1·MeOH·H2O). 1·MeOH·H2O had a manganese triangle structure, [MnIII3O]7 +, which was used as a building unit for a subsequent assembly of an oximate and central oxide. The flexible bppo ligand linked the units, resulting in the formation of a 1D helical structure. Variable temperature direct current magnetic susceptibility measurements of complex 1·MeOH·H2O were carried out. Exchange interactions of the metal centers of complex 1·MeOH·H2O were examined, and the results indicate that both ferro- and antiferromagnetic interactions simultaneously coexist in 1·MeOH·H2O, resulting in an S = 2 ground state. Moreover, complex 1·MeOH·H2O shows the frequency dependence of the out-of-phase component in alternating current magnetic susceptibility measurements, indicating single-molecule magnet behavior with Ueff = 28 K and τ0 = 1.8 × 10− 9 s. 相似文献
10.
In this article, four new lead(II) coordination polymers based on a N,O-donor ligand 2′-(1 H-1,3,7,8-tetraaza-cyclopenta[l]phenanthren-2-yl)biphenyl-2-carboxylic acid (HL) have been hydrothermally synthesized, namely, [PbL2]·2H2O (1), [PbL2]·2H2O·CH3CH2OH (2), [Pb5L2(m-BDC)4]·3H2O (3) and [Pb2L2(p-BDC)] (4), where m-BDC = 1,3-benzenedicarboxylate and p-BDC = 1,4-benzenedicarboxylate. Compound 1 shows a 2D bilayer structure, which is further extended into a 3D supramolecular structure through π–π stacking interactions. Compound 2 shows a 3D supramolecular structure based on a zero-dimensional molecule by π–π stacking interactions of neighboring molecules. Compound 3 shows a 2D layer structure. Compound 4 displays a 1D chain-like structure, which is then stacked by π–π interactions to result in a 2D supramolecular structure. Solid-state luminescent spectra of four lead(II) complexes indicate intense fluorescent emissions. 相似文献
11.
A new luminescent Zn(II) coordination polymer, namely [Zn4(L)2(μ4-O)(H2O)2(DMF)]n (1 H3L = biphenyl-3,4,5-tricarboxylic acid, DMF = N,N′-dimethyl formamide) has been synthesized by combining the H3L ligand with Zn(II) salts under solvothermal conditions. Single-crystal X-ray diffraction analysis reveals that 1 features μ4-oxygen-bridged tetrahedral {Zn4O} clusters as building subunits, which are further bridged by L3 − ligands into a complicated three-dimensional (3D) architecture. Topological analysis reveals that it can be reduced into a (3, 6)-connected topological network with the schläfli symbol of {4 · 62}2{42 · 69 · 84}. In addition, the luminescent property of 1 was also investigated in the solid state at room temperature. 相似文献
12.
Three coordination polymers based on multidentate N-donor ligands and polycarboxylate anions, namely, [Co3(4,4′-tmbpt)4(btc)2]·9.5H2O (1), [Ag4(4,4′-tmbpt)(btec)(H2O)2]·H2O (2) and [Zn(4,4′-tmbpt)(btec)0.5(H2O)]·0.5H2O (3) (4,4′-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(4-pyridyl)-1,2,4-triazole, H3btc = 1,3,5-benzenetricarboxylic acid, and H4btec = 1,2,4,5-benzenetetracarboxylic acid) have been prepared under hydrothermal condition. Compound 1 displays a 3D (3,6,8)-connected framework with (4·62)(44·610·8)(414·612·82) topology. Compound 2 is a 3D (4,5,8)-connected framework with (43·62·8)(43·65·82)(48·62)(410·610·88) topology. Compound 3 exhibits a 2D → 3D polythreading architecture. The photoluminescent spectra indicate that at room temperature, compounds 2 and 3 emit green and blue luminescence, respectively. 相似文献
13.
《Inorganic chemistry communications》2007,10(11):1325-1329
Two heterometallic Cu/Mn complexes [Cu(Me2en)2][Mn2(ox)3] · 2H2O (1) (Me2en = N,N-dimethylethylenediamine, H2ox – oxalic acid) and [Cu(1,3-pn)(ox)(H2O)][Mn(ox)(H2O)2] · H2O (2) (1,3-pn = 1,3-diaminopropane) are prepared by the one-pot reaction of copper powder, tetrabutylammonium permanganate, oxalic acid and N-chelating ligands. Their structures are investigated by single-crystal X-ray analysis that reveals interesting variation in bridging motives of the oxalate groups composing the Mn-polymeric fragments. 相似文献
14.
《Inorganic chemistry communications》2007,10(7):757-761
The two new inorganic–organic hybrid polyoxomolybdate complexes [Himi]4[{Co(imi)2(H2O)2}Mo7O24] · 4H2O (1) and [Zn(imi)4]2[(imi)2Mo8O26] · 6H2O (2) (imi = imidazole) have been prepared by conventional aqueous solution synthesis. Compound 1 consists of heptamolybdate anions [Mo7O24]6− covalently linked by [CoN2O4]2+ octahedra into one-dimensional zigzag-shaped chains. The zigzag-shaped chains are further linked together via the hydrogen-bonding interactions to form a 2D supramolecular framework. Compound 2 is build up of an imidazole-coordinated octamolybdate anion, two imidazole coordinating zinc cations and lattice water molecules to form a three-dimensional framework via complex hydrogen-bonding. 相似文献
15.
To study the effect of different metal centers on catalytic function, two complexes [L-M] (M = Co, 1; Ni, 2) were prepared by the reactions of N,N′-bis(2-amino-3,5-di-tert-butylphenyl)-o-phenylenediamine, H2L, with Co(ClO4)2·6H2O or Ni(ClO4)2·6H2O, respectively. Electrochemical investigations show 1 and 2 can electrocatalyze hydrogen generation both from acetic acid and aqueous buffer. Complexes 1 and 2 afford a turnover frequency (TOF) of 738.23 and 1331.23 mol of hydrogen per mole of catalyst per hour (mol h− 1) at an overpotential (OP) of 0.838 V from a neutral buffer, respectively, indicating that the nickel center constitutes the better active catalyst. 相似文献
16.
Presented in this communication are four metal complexes based on 2-propyl-4,5-dicarboxylate-imidazole (H3PIDC), including two Co(II) coordination compounds, [Co(H2PIDC)2(H2O)2] · 4H2O (1) and 2[Co(H2PIDC)2(H2O)2] · 5H2O (2), as well as two Zn(II) coordination compounds, [Zn(H2PIDC)2(H2O)2] · 4H2O (3) and 2[Zn(H2PIDC)2(H2O)2] · 7H2O (4). They contain the same coordinated unit of [M(H2PIDC)2(H2O)2] (M = Zn or Co). Interestingly, among these four complexes, 1 and 2, or 3 and 4 crystallized in different space group, which may be related with the number of the crystallized H2O molecules. 相似文献
17.
Tao Wei Shunsheng Zhao Weiyu Bi Xingqiang Lü Yani Hui Jirong Song Wai-Kwok Wong Richard A. Jones 《Inorganic chemistry communications》2009,12(12):1216-1219
With the Zn-Schiff-base [ZnL(Py)] from the simple Salen-type Schiff-base ligand H2L (H2L = N,N′-bis(salicylidene)ethylene-1,2-diamine) as the precursor, two co-crystallized heterometallic (Zn2Ln and ZnLn array) complexes [Zn2Ln(L)2(Py)2(NO3)2]·[ZnLn(L)(Py)(NO3)3(H2O)]·NO3·mMeOH·nS (Ln = Er(1), S = CH3CN, m = 2, n = 1 or Gd(2), S = H2O, m = 1, n = 3) were obtained by the further reaction with Ln(NO3)3·6H2O, respectively. The result of their photophysical properties shows the intramolecular effective energy transfer has been demonstrated in the Zn2Er and ZnEr arrayed complex 1, and the co-existence of different chromophores should be a potentially new way to the fine-tuning properties of NIR luminescence from Er3+ ions. 相似文献
18.
Two new coordination polymers, {[Cd(BIDPT)(oba)]·0.5H2O}n (1) and {[Zn(BIDPT)(4,4′-sdb)]·2.25H2O}n (2) (BIDPT = 4,4′-bis(imidazol-l-yl)diphenyl thioether, H2oba = 4,4′-oxydibenzoic acid, 4,4′-H2sdb = 4,4′-sulfonyldibenzoic acid), have been solvothermally synthesized and characterized. Both 1 and 2 show 2-fold interpenetrating 3D frameworks with {65 ∙ 8} cds and {66} dia topology, respectively. These two coordination polymers show strong luminescence and their luminescence could be quenched by a series of nitro explosives. Importantly, they exhibit very highly sensitive and selective detection of picric acid compared to other nitro explosives. 相似文献
19.
《Inorganic chemistry communications》2007,10(4):432-436
Two novel metal-organic frameworks (MOFs) [Cd(3-MPCA)2 · H2O] · 5.5H2O (1) and [Cu(3-MPCA)2 · H2O] · 4H2O (2) [3-MPCA− = (1R, 3S)-1,2,2-trimethyl-3-(pyridin-3-ylmethylcarbamoyl)cyclopentanecarboxylate] were hydrothermally synthesized and characterized by X-ray crystallography. Complexes 1 and 2 are homochiral and have similar one-dimensional (1D) chain structure, which are further linked by strong hydrogen bonds to give 3D architectures. There are oxygen hexmers and heptamers from water molecules and carbonyl group in 1 with O⋯O distances and O–O–O angles comparable to the corresponding values in ice. Nonlinear optical measurements on powdered sample of 1 and 2 revealed that they display second-harmonic-generation (SHG) response of 0.8 and 0.3 times of that for urea, respectively. 相似文献
20.
Three new coordination polymers, namely, {[Cu2(IPT)(SO4)(OH)(H2O)]·H2O}n (HIPT = 5-(4-(1H-imidazol-1-yl)phenyl)- 1H-tetrazolate, 1), {[Cd2(IPT)(NPA)(OH)]·H2O}n (H2NPA = 5-nitroisophthalic acid, 2), and {[Zn2(IPT)(IDC)(H2O)]·3H2O}n (H3IDC = 1H-imidazole-4,5-dicarboxylic acid, 3), were assembled from a bifunctional organic ligand containing both tetrazole and imidazole groups with/without the aid of carboxylate coligands. Compound 1 possesses 2D structure built by 1D [Cu2(IPT)(SO4)(OH)]n secondary building blocks and IPT− linkers. The 2D networks are linked into 3D supramolecular framework via water chains in helical conformation. Compound 2 displays 3D pillar-layer framework with 2D layers based on tetranuclear Cd(II) SBUs and NPA2 − pillars. Compound 3 exhibits a 3D framework constructed from the interconnection of 1D [Zn-IDC]n chains and binuclear Zn2(IPT)2 rings. The thermal stabilities of porous compound 3 and luminescent properties of compounds 2 and 3 have also been studied in detail. They exhibit intense solid-state fluorescent emissions at room temperature. 相似文献