Novel one‐dimensional polymeric Cu(II) complexes via Cu(II)‐assisted hydrolysis of the 2,4‐ bis (3,5‐dimethyl‐1 H ‐pyrazol‐1‐yl)‐6‐methoxy‐1,3,5‐triazine pincer ligand: Synthesis, structure, and antimicrobial activities

2020 ◽  
Vol 34 (11) ◽  
Author(s):  
Saied M. Soliman ◽  
Ayman El‐Faham ◽  
Sobhy E. El Silk
Keyword(s):  
Antimicrobial Activities ◽  
Pincer Ligand ◽  
One Dimensional ◽  
Ligand Synthesis ◽  
Hydrolysis Of

scholarly journals Synthesis, Structure and In Vitro Anticancer Activity of Pd(II) Complex of Pyrazolyl-s-Triazine Ligand; A New Example of Metal-Mediated Hydrolysis of s-Triazine Pincer Ligand

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 119
Author(s):  
Jamal Lasri ◽  
Matti Haukka ◽  
Hessa H. Al-Rasheed ◽  
Nael Abutaha ◽  
Ayman El-Faham ◽  
...  
Keyword(s):  
Thermal Conditions ◽  
Molar Ratio ◽  
Chloride Salt ◽  
Pincer Ligand ◽  
Hydrogen Bonding Interactions ◽  
Square Planar ◽  
Hirshfeld Analysis ◽  
Hydrolysis Of ◽  
Mcf 7

The square planar complex [Pd(PT)Cl(H2O)]*H2O (HPT: 6-(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazine-2,4(1H,3H)-dione) was obtained by the reaction of 2-methoxy-4,6-bis(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazine (MBPT) pincer ligand with PdCl2 in a molar ratio (1:1) under thermal conditions and using acetone as a solvent. The reaction proceeded via C-N cleavage of one C-N moiety that connects the pyrazole and s-triazine combined with the hydrolysis of the O-CH3 group. The reaction of the chloride salt of its higher congener (PtCl2) gave [Pt(3,5-dimethyl-1H-pyrazole)2Cl2]. The crystal structure of [Pd(PT)Cl(H2O)]*H2O complex is stabilized by inter- and intra-molecular hydrogen bonding interactions. Hirshfeld analysis revealed that the H...H (34.6%), O...H (23.6%), and Cl...H (7.8%) interactions are the major contacts in the crystal. The charges at Pd, H2O, Cl and PT are changed to 0.4995, 0.2216, −0.4294 and −0.2917 instead of +2, 0, −1 and −1, respectively, using the MPW1PW91 method. [Pd(PT)Cl(H2O)]*H2O complex has almost equal activities against MDA-MB-231 and MCF-7 cell lines with IC50 of 38.3 µg/mL.

scholarly journals A New Chlorinated Phenolic Compound From the Antarctic Lichen, Pertusaria dactylina

2020 ◽  
Vol 15 (3) ◽  
pp. 1934578X2090288
Author(s):  
Man H. Koo ◽  
Min J. Kim ◽  
Jae E. Seo ◽  
Ji H. Kim ◽  
Se J. Han ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Phenolic Compound ◽  
Fast Atom Bombardment ◽  
2D Nmr ◽  
Antimicrobial Activities ◽  
Inhibitory Effect ◽  
Two Dimensional ◽  
One Dimensional ◽  
The Antarctic

A new chlorinated phenolic compound, methyl-3-chloro-2-hydroxy-4-methoxy-6-pentylbenzoate (1) and 4 known compounds (2-5) were isolated from the Antarctic lichen, Pertusaria dactylina ( Pertusariaceae). The structure of the new compound was determined by means of One-dimensional and two dimensional nuclear magnetic resonance (1D and 2D NMR) and high-resolution fast atom bombardment mass spectrometry (HRFABMS) experiments. The antimicrobial activities of compounds 1 to 5 against Staphylococcus aureus and Candida albicans were evaluated. The results showed that compound 1 exhibited a weak inhibitory effect against C. albicans with an IC50 value of 67 ± 7 μg/mL.

A long-tethered (P–B–P)-pincer ligand: synthesis, complexation, and application to catalytic dehydrogenation of alkanes

2016 ◽  
Vol 45 (40) ◽  
pp. 15931-15941 ◽  
Author(s):  
Enrique Huang Kwan ◽  
Yasushi Jack Kawai ◽  
Sei Kamakura ◽  
Makoto Yamashita
Keyword(s):  
Catalytic Dehydrogenation ◽  
Subsequent Reaction ◽  
Pincer Ligand ◽  
Ligand Synthesis

A new long-tethered boron-containing (P–B–P)-pincer ligand has been synthesized. This ligand was introduced to Ir to form (P–B–P)Ir(H)Cl complex. Subsequent reaction with nBuLi led to the formation of dihydride complex (P–B–P)Ir(H)2. Both complexes were found to be moderately active for the catalytic dehydrogenation of alkanes.

Phthalate hydrolysis under landfill conditions

2006 ◽  
Vol 53 (8) ◽  
pp. 119-127 ◽  
Author(s):  
S. Jonsson ◽  
V.A. Vavilin ◽  
B.H. Svensson
Keyword(s):  
Phthalic Acid ◽  
Dibutyl Phthalate ◽  
Solid Wastes ◽  
Distributed Model ◽  
Phthalic Acid Esters ◽  
Municipal Solid Wastes ◽  
One Dimensional ◽  
Ethylhexyl Phthalate ◽  
Hydrolysis Of ◽  
Acid Esters

Experimental data from a study using a landfill simulation reactor were used to develop and calibrate a one-dimensional distributed model of co-digestion of municipal solid waste and three phthalic acid diesters with different water solubilities. The three diesters were diethyl phthalate, dibutyl phthalate, and di-2-ethylhexyl phthalate. Two types of municipal solid wastes were assumed, easily degradable and recalcitrant. The model considered inhibition of hydrolysis of the recalcitrant fraction and phthalic acid esters, and also methanogenesis at acidic pH. The results indicated that the prolonged steady-state concentrations of the diesters in the leachates could be explained by equilibrium between physicochemical desorption and sorption processes for the three diesters. When methanogenic conditions were induced in the acidogenic landfill simulation reactor, inhibition of both hydrolysis of recalcitrant MSW and of phthalic acid esters ceased.

4-Chloropyridine-3-sulfonic acid

2006 ◽  
Vol 62 (4) ◽  
pp. o1490-o1491
Author(s):  
Xin-Biao Mao ◽  
Tie-Han Li ◽  
Chun-An Ma ◽  
Qing-Bao Song
Keyword(s):  
Crystal Structure ◽  
Hydrochloric Acid ◽  
Hydrogen Bonds ◽  
Sulfonic Acid ◽  
Dilute Hydrochloric Acid ◽  
Two Dimensional ◽  
One Dimensional ◽  
Compound C ◽  
Dimensional Network ◽  
Hydrolysis Of

The title compound, C5H4ClNO3S, was obtained by hydrolysis of 4-chloropyridine-3-sulfonamide in dilute hydrochloric acid. In the crystal structure, one-dimensional chains are formed via N—H...O hydrogen bonds. In addition, weak C—H...Cl hydrogen bonds link these chains into a two-dimensional network

Selenium Nanoparticles Synthesized via a Facile Hydrothermal Method

2012 ◽  
Vol 535-537 ◽  
pp. 289-292 ◽  
Author(s):  
Yi Fan Niu ◽  
Jean Pierre Guin ◽  
Remi Chassagnon ◽  
Frédéric Smektala ◽  
Abdesselam Abdelouas ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aspect Ratio ◽  
Large Scale ◽  
Hexagonal Phase ◽  
Colloidal Suspension ◽  
Anisotropic Growth ◽  
Facile Hydrothermal Method ◽  
Simple Process ◽  
One Dimensional ◽  
Hydrolysis Of

Crystalline selenium nanostructures were synthesized from the reaction of a GeSe3 glass with water at 85°C for 144 hours. The hydrolysis of the Ge-Se bonds releases Se fragments in the solution where they form a colloidal suspension of amorphous nanospheres. The later evolve toward a more stable hexagonal phase (trigonal) leading to the anisotropic growth of one-dimensional monocrystalline structures. Filaments, bars and tubes of monocrystalline trigonal selenium were obtained with diameters ranging from 10 nm to 1 µm and aspect ratio up to 180. This simple process in aqueous solution opens new perspectives for the synthesis of 1D nanoparticles of trigonal selenium at large scale.

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