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1.
Two entangled coordination polymers [Cd2(bib)(bdc)2]n (1) and [Cd2(bib)(bda)2]n (2) were synthesized by the hydrothermal reaction (bib = 1,4-bis(2-methyl-imidazol-1-yl)butane, bdc = 1,2-benzenedicarboxylate, bda = 1,4-benzenediacetate). 1 exhibits an unusual 6-connected self-catenated 3D network based on Cd2(COO)2 dimer with the point symbol of (44·610·8). 2 exhibits a 3-fold interpenetrating 3D pcu network based on Cd2(COO)2 dimer. The different conformations of bib ligands (the anti–anti–anti conformation in 1 and gauche–anti–gauche conformation in 2) play the key role in the construction of different structures in 1 and 2. The luminescence and thermal stability were investigated. 相似文献
2.
Xi-Jun Ke Dong-Sheng Li Jun Zhao Cai-Xia Meng Xiao-Ning Zhang Qiu-Fen He Cai Li Yao-Yu Wang 《Inorganic chemistry communications》2010,13(4):484-487
A new CdII-coordination polymer, namely, [Cd3(nbtc)2·4H2O]n (1), has been hydrothermally synthesized with in situ generated 5-nitrobenzene-1,2,3-tricarboxylate (nbtc3?) ligand. Single-crystal X-ray diffraction study reveals that compound 1 is constructed from trinuclear CdII clusters and exhibits a previously unknown 2D (3,4,9)-connected (3.42)(32.43.5)(36.411.510.68.8) topology as well as 3D H-bonding pillared architecture. In addition, the photoluminescent property and thermal stability of 1 were also discussed. 相似文献
3.
《Inorganic chemistry communications》2007,10(5):610-613
Treatments of the MeOH, EtOH and PrOH solutions of 2-acetylpyridine, hydrazine and CuII salts (in molar ratio 2:3:2) afforded respectively the complexes, [CuII(HL)(Cl)](SO3CF3)H2O (1), [CuII(MeL)(H2O)](ClO4)2 (2) and [CuII(EtL)](Cl)](ClO4) (3) (L = bis-(methyl, 2-pyridyl ketone hydrazonyl)methine), in which the ligands, HL, MeL and EtL are formed in situ from oxidative couplings of alcohols and hydrazones. 相似文献
4.
Dong-Sheng Li Long Tang Feng Fu Miao Du Jun Zhao Ni Wang Peng Zhang 《Inorganic chemistry communications》2010,13(10):1126-1130
Three novel coordination polymers{[CdL2(HL)(H2O)]·(H2O)}n (1), [Zn2(OH)L3]n (2) and [CoL2(H2O)]n (3) have been hydrothermally synthesized from M(NO3)2·nH2O (MII = CdII, ZnII and CoII) and an unsymmetrical tecton 3-(pyridin-4-yl) benzoic acid (HL). All complexes show interesting structural patterns, namely, unprecedented 1D double-stranded supramolecular clasp for 1, novel (3,5,6)-connected helical tubular double layer for 2, 2-fold interpenetrating cds network for 3. The fluorescent and thermal properties of complexes 1, 2 and/or 3 have also been investigated. 相似文献
5.
SOD mimic activity,DNA binding and in-vitro antibacterial studies of drug based copper(II) complexes
Mohan N. Patel Deepen S. Gandhi Pradhuman A. Parmar 《Inorganic chemistry communications》2010,13(5):618-621
Square pyramidal complexes [CuII(PFL)(bpa)Cl]?5H2O (1) and [CuII(LFL)(bpa)Cl]?5H2O (2) have been synthesized and characterized. Compounds were checked for their in-vitro antimicrobial activity against two Gram(+ ve) and three Gram(–ve) bacterial species. Intrinsic binding constant (Kb) of complexes with CT DNA were determined using absorption titration. Viscosity measurement suggests that complexes bind with CT DNA through partial nonclassical intercalative mode. Superoxide dismutase (SOD) like activity of the complexes was also compared with previously reported compounds. 相似文献
6.
Synthesis and structure of the cadmium(II) complex of [CdII(CEAP)2(H2O)(CH3COO)Cl] {CEAP = 4-[N,N-bis(2-cyanoethyl)]aminopyridine} has been reported. The structure exhibits a novel 3D-cagework assembly with the assistance of the coordinated chloride anion and water molecule via forming multiple hydrogen bonds with the cyanoethyl arms of CEAP. 相似文献
7.
《Inorganic chemistry communications》2008,11(10):1110-1112
Two new cadmium diphosphonate complexes, namely, Cd2(H2O)2[(C5H5N)CH2C(OH)(PO3)(PO3H)]2 1 and Cd2(H2O)(Cl)[(C5H5N)CH2C(OH)(PO3)2] 2, based on [1-hydroxy-2-(3-pyridyl)-ethylidene]-bis-[phosphonic acid] monosodium salt have been synthesized under hydrothermal reaction and characterized by single crystal X-ray diffraction. Both complexes show strong fluorescence emission in contrast to the free ligand, respectively, in solid state at ambient temperature. 相似文献
8.
《Inorganic chemistry communications》2008,11(10):1273-1275
The self-assembly reactions of the flexible ligand 1,4-bis(1,2,4-triazol-1-yl)butane (btb) and rigid ligand 1,4-benzenedicarboxylate (bdc) with Zn(II) or Cd(II) give two novel coordination polymers {[Zn(bdc)(btb)](H2O)5}n (1) and {[Cd2(bdc)2(btb)(H2O)2](H2O)7}n (2). Coordination polymer 1, a supramolecular isomer of [Zn2(bdc)2(btb)2](H2O)2 [X.L. Wang, C. Qin, E.B. Wang, Z.M. Su, Chem. Eur. J. 12 (2006) 2680], is a special 2D (6,3) network, with six Zn(II) atoms at six corners and four bdc and two double btb at six edges. Coordination polymer 2 exhibits a distorted 3D cubic topology that is built from dimer Cd2 units. The blue luminescent emission maxima at 420 and 439 nm for 1, 440 and 455 nm for 2 were observed in the solid state at room temperature. 相似文献
9.
Guang-Juan Xu Ya-Hui Zhao Kui-Zhan Shao Lei Chen Hong-Ying Zang Zhong-Min Su Dong-Ying Du 《Inorganic chemistry communications》2009,12(10):1024-1026
A new 3D coordination polymer [Cd2(L3)(BTC)(H2O)] (1) (HL3 = 3,5-bis(pyridin-3-ylmethoxy)benzoic acid, H3BTC = 1,3,5-benzenetricarboxylic acid), has been isolated under hydrothermal condition and characterized by single-crystal X-ray diffraction. Compound 1 is constructed from Cd2-based second building units (SBUs) [Cd2(CO2)3O4N2] and displays a 3D (3,4,7)-connected net with (42·6)(43·63)(45·611·85) topology. In addition, the photoluminescent spectra indicate compound 1 may be a good candidate for blue-luminescent materials. 相似文献
10.
Assembly of CdCl2 and 3,3′-dimethoxy-2,2′-bipyridine-6,6′-dicarboxylic acid (H2mbpdc) under hydrothermal condition affords a chloride-centered discrete CdII6 cage [Cd6(mbpdc)6Cl]·[H(H2O)14.5] (1), in which a cationic water cluster H+(H2O)10 is present. Our anion-templated assembly system exhibits exclusive encapsulation of Cl− ion, and thus displays potentially applications in the separation of Cl− ion with other halide ions. 相似文献
11.
Anna Zangl Peter Klüfers Dominik Schaniel Theo Woike 《Inorganic chemistry communications》2009,12(10):1064-1066
The two novel binuclear pyrazole-3,5-dicarboxylato-bridged {RuNO}6 complexes K2[{Ru(NO)Cl}2(μ-pzdc)2] (1) and [{Ru(NO)(H2O)}2(μ-pzdc)2]·4H2O (2) (pzdc = pyrazole-3,5-dicarboxylate) were synthesized and characterized by elemental analysis, mass spectrometry and spectroscopic methods (NMR, UV–vis, IR). 2 was investigated by means of single-crystal X-ray diffraction analysis. On irradiation, in both 1 and 2 the existence of photoinduced long-lived metastable isonitrosyl states SI were detected by low-temperature infrared spectroscopy. 相似文献
12.
The dinuclear CoII coordination compound with empirical formula [Co2(2,4-pydc)2(bpa)(H2O)6](H2O)2 (1); bpa = 1,2-bis(2,4-pyridyl)ethane, 2,4-pydc = 2,4-pyridinedicarboxylate anion, has been synthesized and õcharacterized by elemental analysis, single crystal X-ray diffraction, IR and UV–vis spectra, TGA and XRPD. Compound 1 is a symmetry-related dinuclear compound consisting of two six coordinated cobalt atoms, one bpa ligand, two 2,4-pydc ligands and two lattice water molecules. Each CoII ion is coordinated by one oxygen atom and one nitrogen atom from 2,4-pydc bidentate chelate ligand, one nitrogen atom of bpa bidentate bridging ligand and three water molecules, giving a distorted octahedral geometry with CoN2O4 chromophore. The crystal packing of this compound reveals a novel 3D supramolecular network, formed by hydrogen-bonding and C–H⋯π interactions. Investigations of the dynamic structural transformation behavior demonstrate that the title compound exhibits a solvent-induced reversible crystal-to-amorphous transformation with chromotropism when exposed to water vapor. This indicates that the dehydrated amorphous form, Co2(2,4-pydc)2(bpa)(H2O)2 (1A), may be utilized as an indicator for humidity. 相似文献
13.
《Inorganic chemistry communications》2007,10(9):997-1000
Reaction of manganese(II) polymer [Mn5Cl(OH)(Piv)8(MeCN)(HPiv)(H2O)]n (1, HPiv is pivalic acid) and 2-benzoylpyridine (L) in MeCN produces the ionic complex [Mn3(Piv)5L2(MeCN)]+[Mn6Cl(Piv)12]− · MeCN (3) containing the unusual hexanuclear {Mn6(μ6-Cl)} anion. An analogous anion was also observed in the complex [Mn6Cl(Piv)12]−(NEt4)+ · 5MeCN (4) prepared by the reaction of the polymer [Mn(Piv)2(EtOH)]n (2) with NEt4Cl in MeCN. Complexes 3 and 4 were characterized by the X-ray diffraction and magnetic susceptibility. 相似文献
14.
Rene Gutmann Sylvia Eller Markus Fessler Wytze E. van der Veer Alexander Dumfort Holger Kopacka Thomas Müller Peter Brüggeller 《Inorganic chemistry communications》2007,10(12):1510-1514
For the first time the excited states of the RuP2N4 moiety belonging to a new heterodimetallic OsII–RuII bipyridyl complex are successfully designed in order to introduce photochemical reactivity. This dramatic effect is achieved via the use of the sterically demanding bis(bidentate) phosphine cis, trans, cis-1,2,3,4-tetrakis(diphenylphosphino)cyclobutane (dppcb). Thus, the temperature dependence of the luminescence lifetimes ranging from 77 to 298 K for the novel homodimetallic species meso-(ΔΛ/ΛΔ)-[Os2(dppcb)(bpy)4](PF6)4 (1) and rac-(ΔΔ/ΛΛ)-[Os2(dppcb)(bpy)4](PF6)4 (2) clearly indicates that the d–d state responsible for photochemistry is not populated. By contrast, the analogous temperature dependence for the new heterodimetallic species ΔΛ/ΛΔ-[Os(bpy)2(dppcb)Ru(bpy)2](PF6)4 (3) and ΔΔ/ΛΛ-[Os(bpy)2(dppcb)Ru(bpy)2](PF6)4 (4) unequivocally shows that as a consequence of the population of the d–d state the photochemical reactivity is switched on. Since single crystal X-ray structure analyses are a major clue to the understanding of photophysical and photochemical properties, also the X-ray structures of 1–3 are given. 相似文献
15.
《Inorganic chemistry communications》2007,10(8):948-951
The lantern complex PdII(μ-OOCMe)4CoII(NCMe) (1) was transformed into the pentanuclear double-lantern acetate-bridged heterobimetallic complex [Pd(μ-OOCMe)4Co]2(μ-OOCMe)2Pd(py)2 (py is pyridine) (2) by two routes: (i) reaction of 1 with pyridine and (ii) reaction of 1 with trans-Pd(py)2(OOCMe)2. Complex 2 × 3C6H6 was characterised by single-crystal X-ray diffraction, DTA-TG and magnetic susceptibility data. 相似文献
16.
Two mixed-ligand metal–organic complexes [Cd2(adipato)(phen)2(NO3)2(H2O)2](H2O)6 (1) and {[Cd(adipato)(phen)](H2O)3}n (2) have been synthesized upon the reaction of Cd(II) nitrate with 1,10-phenanthroline (phen) and adipate under similar conditions. For 1, the adipato-bridged dinuclear entities are extended into a 3-D supramolecular architecture via hydrogen bonds and π–π stacking. Interestingly, a well-resolved 1-D water morphology consisting of alternate cyclic water tetramer and hexamer is detected as the guests in each channel of this 3-D lattice. Whereas 2 represents a layered coordination polymer in which the CdII centers are interlinked by adipate dianions via different coordination modes. 相似文献
17.
By using a semi-rigid tripodal ligand 1,1′,1′′-(2,4,6-trimethylbenzene-1,3,5-triyl)tris(methylene)tripyridinium-4-olate) (L), six isomorphous lanthanum metal-organic frameworks (MOFs), namely, [Pr(L)2(Cl)2]·(Cl)(DMF)0.5·(H2O)·(1), [Nd(L)2(Cl)2]·(Cl)(2), [Tb(L)2(Cl)2]·(Cl)·(DMF)·(H2O)(3), [Eu(L)2(Cl)2]·(Cl)(DMF)·(H2O)(4), [La(L)2(Cl)2]·(Cl)(5), [Sm(L)2(Cl)2]·(Cl) (DMF)·(H2O) (6), were obtained and characterized by single crystal X-ray diffraction, IR and elemental analysis. Six compounds are isostructural with Ln3 + (Ln = Pr, Nd, Tb, Eu, La, Sm) and in which the Ln3 + is considered as a 6-connecting node and the L ligand is a 3-connecting node to afford a (3,6)-connected 2D layer with kgd topology, which further stacks into 3D supramolecular networks through C-H…O weak interactions. Luminescent properties of these lanthanide MOFs have also been assessed at ambient temperature, in which the Pr3 +-1 and the La3 +-5 are slightly blue-shifted with respect to the ligand. Series of sharp peaks characteristic of the Eu3 +-4, the Tb3 +-3 and Sm3 + − 6 metal-centered luminescence appear. The Nd3 +-2 has no emission. 相似文献
18.
《Inorganic chemistry communications》2000,3(3):107-110
The reaction of 2-[((2-(4-imidazoyl)ethyl)amino)carbonyl]-6-[((2-amino-2-methylpropyl)amino)methyl]pyridine (L) with ZnII(NO3)2·6H2O has afforded a novel one-dimensional polymeric ZnII complex, (ZnII(L)(NO3)2)n (2). Complex 2 crystallizes in the space group P21/n with a=8.955(3), b=13.216(3), c=18.941(3) Å, β=103.39(2)°, V=2180.6(10) Å3, and Z=4. The geometry of each ZnII is approximately a trigonal bipyramid: three nitrogens and one oxygen of the amide group are coordinated to the zinc while the fifth site is occupied by the imidazole nitrogen of a neighboring unit. 相似文献
19.
Theocharis C. Stamatatos Spyros P. Perlepes Catherine P. Raptopoulou Vassilis Psycharis Costas S. Patrickios Anastasios J. Tasiopoulos Athanassios K. Boudalis 《Inorganic chemistry communications》2009,12(5):402-405
The use of 1,1′-oxalyldiimidazole, (im)COCO(im), for the synthesis of coordination complexes is explored for the first time. The [Cu2(O2CMe)4(H2O)2]/(im)COCO(im) reaction system in 96% EtOH yields the new, 1D coordination polymer [Cu(ox)(Him)2]n (1), where Him is the neutral imidazole and ox2? is the oxalate(-2) ligand. A mechanism for the hydrolytic decomposition of the ligand is proposed. Complex 1 comprises neutral, zigzag chains with the η1:η1:η1:η1:μ (2.1111 using Harris notation) ox2? ligand bridging two neighboring CuII centers; two cis Him groups complete a Jahn–Teller distorted octahedral geometry at the metal. The dc, variable-temperature magnetic susceptibility data for the complex reveal antiferromagnetic CuII?CuII exchange interactions. 相似文献
20.
Yong Wang Hong-Bin Xu Zhong-Min Su Kui-Zhan Shao Ya-Hui Zhao Hong-Peng Cui Ya-Qian Lan Xiang-Rong Hao 《Inorganic chemistry communications》2006,9(12):1207-1211
Depending on the different coordinated anions used, reaction of Cd(II) salt with 2,2′-(1,4-butanediyl)bis(1H-benzimidazole) results in the formation of two coordination polymers: a 1D chain {[Cd(H2C4BIm)Cl2] · (H2C4BIm)}n (1), and a 2D sheet [Cd(HC4BIm)(NCS)]n (2) which features distorted 4.82 topology (H2C4BIm = 2,2′-(1,4-butanediyl)bis(1H-benzimidazole)). The fluorescence properties for both the complexes have been studied. 相似文献