Synthesis, structures and photoluminescence of a series of 3D lanthanide–organic coordination polymers constructed from versatile 2,2′-bipyridine-3,3′-dicarboxylic acid 1,1′-dioxide and oxalic acid

CrystEngComm ◽  
2015 ◽  
Vol 17 (22) ◽  
pp. 4150-4160 ◽  
Author(s):  
Lijuan Zhang ◽  
Hongwei Zhu ◽  
Yan Guo ◽  
Yunshan Zhou ◽  
Qing Yue ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Dicarboxylic Acid ◽  
Coordination Polymers

Ultratrace level detection of Cu2+ in aqueous medium by novel Zn(II)-dicarboxylato – pyridyl coordination polymers and cell imaging with HepG2 cells

2021 ◽  
Author(s):  
Suprava Bhunia ◽  
Basudeb Dutta ◽  
Kunal Pal ◽  
Angeera Chandra ◽  
Kuladip Jana ◽  
...  
Keyword(s):  
Dicarboxylic Acid ◽  
Aqueous Medium ◽  
Coordination Polymers ◽  
Hepg2 Cells ◽  
Cell Imaging ◽  
Muconic Acid

Two newly designed coordination polymers (CPs), [Zn(adc)(4-Cltpy)(H2O)] (CP1) and [Zn(trans-muca)(4-Cltpy)] (CP2) (4-Cltpy = 4′-Chloro-2,2′:6′,2′′-terpyridine, H2adc = Acetylene- dicarboxylic acid, trans-H2muca = trans, trans-muconic acid) are synthesized and structurally characterized by...

Two- and three-dimensional coordination polymers based on zinc(II) and furan-2,5-dicarboxylic acid: structure variation due to metal-to-linker ratio

2018 ◽  
Vol 74 (12) ◽  
pp. 1719-1724 ◽  
Author(s):  
Yimin Mao ◽  
Peter Y. Zavalij
Keyword(s):  
Dicarboxylic Acid ◽  
Coordination Polymers ◽  
Three Dimensional ◽  
Molar Ratio ◽  
Monoclinic Space Group ◽  
Structure Variation ◽  
Space Group ◽  
Hydrogen Bonding Pattern ◽  
Solvent Molecules ◽  
A Chain

Two ZnII-based coordination polymers (CPs) were synthesized by the hydrothermal method, using Zn(NO3)2·6H2O and furan-2,5-dicarboxylic acid (FDCA) in dimethylformamide (DMF) solvent, at 95 °C. Poly[tetrakis(dimethylazanium) [tetrakis(μ2-furan-2,5-dicarboxylato-κ2 O 2:O 5)dizinc(II)]], {(C2H8N)4[Zn2(C6H2O5)4]} n or {[DMA]4[ZnII 2(FDC)4]} n (DMA = dimethylazanium and FDC = furan-2,5-dicarboxylate), (1), was obtained with a 1:1 molar ratio of ZnII and FDCA. It crystallized in the monoclinic space group C2/c. Coordinated by ZnII ions, FDC2− ligands form 21 double-stranded helices propagating along the b axis. The helices are interconnected and extend laterally in the a direction, forming a two-dimensional (2D) sheet-like network. The 2D sheets are stacked along the c direction without interconnections. DMA cations are cocrystallized in (1) and are hydrogen bonded with carboxylate O atoms of the FDC2− ligands. The hydrogen-bonding pattern consists of R 2 2(4) and R 2 2(10) motifs alternating in a chain. Poly[bis(dimethylazanium) [bis(μ4-furan-2,5-dicarboxylato-κO 2:κO 2′:κO 5:κO 5)bis(μ3-furan-2,5-dicarboxylato-κO 2:κO 2′:κO 5)dizinc(II)] dimethylformamide 3.08-solvate], {(C2H8N)2[Zn2(C6H2O5)4]·3.08C3H7NO} n or {[DMA]2[ZnII 3(FDC)4]·3.08DMF} n , (2), was obtained with a 1:2 molar ratio of ZnII and FDCA. It crystallized in the monoclinic space group P21/c, forming a three-dimensional network. The pores are filled with DMA cations and DMF solvent molecules.

STUDIES ON THE BIOSYNTHESIS OF PYOCYANINE

1962 ◽  
Vol 8 (1) ◽  
pp. 49-56 ◽  
Author(s):  
J. M. Ingram ◽  
A. C. Blackwood
Keyword(s):  
Amino Acids ◽  
Pseudomonas Aeruginosa ◽  
Oxalic Acid ◽  
Dicarboxylic Acid ◽  
Sodium Formate ◽  
Complete Medium ◽  
Tetracarboxylic Acid ◽  
Dipotassium Salt

The biosynthesis of pyocyanine, the blue phenazine pigment produced by Pseudomonas aeruginosa, was studied by the addition of radioactive substrates to a culture growing on a complete medium. The distribution of labelled carbon from radioactive substrates in the pyocyanine was examined by degrading the pigment to 1-hydroxyphenazine, quinoxaline dicarboxylic acid, quinoxaline, and pyrazine tetracarboxylic acid dipotassium salt, and thus 7 of the 13 carbons were assayed separately or in pairs.Glycerol-1,3-C14 is the principal donor of radioactivity to the pyocyanine carbon, but not all the carbon atoms tested were labeled. Alanine-U-C14 contributed carbon to pyocyanine also, but not to all carbons, and at a much lower level of efficiency than glycerol. However, with leucine-U-C14, all carbon atoms tested were labeled to a slight extent. These amino acids, when labeled specifically, and glutamate-U-C14, oxalic acid-C14, and sodium formate-C14 did not contribute significantly to pyocyanine carbon.The distribution of radioactivity from glycerol in the pyocyanine molecule suggests the pigment is formed from glycerol or a product closely related to it by the condensation of two carbon units or the condensation of four and two carbon units.

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