Browsing Química Inorgánica by Issue Date
Now showing items 1-20 of 71
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Synthesis and characterization of new Mannich base ligand. Structure of N, N-bis-(4,5-dimethyl-2-hydroxybenzyl)-N(2-pyridylmethyl)amine
(MDPI, 2006)Examples of interesting ligands previously requiring lengthy synthetic procedures have been prepared by one step routes, opening the way to more extensive studies of their complexes and to possible applications. New amine ... -
Crystal structure of H4L1 (N-N’-Bis(o-hydroxybenzoyl)ethylenediamine)
(MDPI, 2006)Three bis-amide bis-phenoxy N2O2 ligands were obtained from the 2:1 molar reaction of phenyl salicylate and the diamines (1,2-diaminoethane, 1,3-diaminopropane and 1,4-diaminobutane) to yield H4Ln (H4L1, H4L2, H4L3 ... -
Crystal Structure of H2L (N,N'-BIS(3-METHOXYSALICYLIDENE)-1,4-Diaminobutane
(MDPI, 2007)Three multidentate Schiff-base ligands were obtained by condensation of different diamines (1,3-diaminopropane, 1,3-diamino-2,2-dimethylpropane, 1,4-diaminobutane) and 3-methoxy-2-hydroxybenzaldehyde to yield H 2 L n (H 2 ... -
Synthesis of Multidentate Schiff Base Ligands. Crystal Structure of (N-N’-BIS(3-Ethoxysalicylidene)-1,3-Diamino-2,2-Dimethylpropane
(MDPI, 2008)The hexadentate Schiff base ligands were prepared by condensation of 3-ethoxy-2-hydroxybenzaldehyde and different diamines (1,3-diaminopropane, 1,3-diamino-2,2-dimethylpropane, 1,4-diaminobutane) to yield H2Ln (H2L1, H2L2 ... -
A novel zinc(II) complex with the ligand 2,20,200-(1,4,7-triazanonane-1,4,7-triyl)- triacetate (NOTA)
(Int Union Crystallography, 2009)The zinc(II) complex with NOTA [2,20 ,200-(1,4,7-triazanonane1,4,7-triyl)triacetate] has previously been synthesized and studied in solution, but was not isolated. The corresponding title ZnII complex pentasodium(I) ... -
The crystal structure of a compartmental heptadentate ligand
(MDPI, 2009)2-(2-hydroxyphenyl)-1,3-bis[4-(2-hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazolidine (H3L) was obtained with high purity by Schiff's condensation between 5-bromosalicyaldehyde and triethylenetetramine. Its recrystallisation ... -
Crystal structure of (n-n'-bis(3-ethoxysalicylidene)-1,2-diaminopropane
(MDPI, 2009)Three hexadentate Schiff base ligands were obtained by condensation of 3-ethoxy-2-hydroxybenzaldehyde and different diamines (1,2-diaminoethane, 1,2-diaminopropane, 1,2-diamino-2-metylpropane) to yield H2Ln (H2L1, H2L2 and ... -
Synthesis of dicompartimental schiff base ligands : Crystal structure of (n-n'-bis(3- methoxy or 3-ethoxysalicylidene)-1,2-diamine-2-methylpropane
(MDPI, 2010)The condensation of 3-methoxy or 3-ethoxy-2-hydroxybenzaldehyde and 1,2 diamine -2-methylpropane, to yield at the dianionic hexadentate Schiff base ligands H2 Ln (H2 L1 , H2 L2 respectively). The ligands have been characterised ... -
Double imidazolidine condensation in a polynucleating Schiff base
(MDPI, 2010)Condensation of pentaethylenehexamine and 3-bromo-5-chlorosalicylaldehyde yielded the bisimidazolidine Schiff base ligand 5,6\'-(1E,1\'E)-(2,2\'-(3,3\'-(ethane-1,2- diyl)bis(2-(3-bromo-5-chloro-2-hydroxyphenyl)imidazolid ... -
Imine-tetrahydroquinazoline tautomerism in a tosilated Schiff base
(MDPI, 2010)Condensation of the selectively tosilated N-(2-aminobenzyl)-4-methylbenzenesulfonamide with 2-hydroxybenzaldehyde gives rise to (E)-N-(2-(2- hydroxybenzylideneamino)benzyl)-4-methylbenzenesulfonamide in the solid state, ... -
A chemosensor for dihydrogenphosphate based on an oxoazamacrocycle possessing three thiourea arms
(Royal Society of Chemistry, 2012)We report a new H-bond macrocyclic chromogenic chemosensor in organic media, H3L, which displayed drastic changes in its UV–vis spectra revealing selectivity for dihydrogenphosphate over other inorganic anions, such as ... -
Synthesis and antimicrobial activities of gold(I) sulfanylcarboxylates
(Springer, 2012)Reaction of NaAuCl4·H2O and thiodiglycol (1:3 molar ratio) with 3-(aryl)-2-sulfanylpropenoic acids, H2 xspa = [x:p = 3-phenyl-, f = 3-(2-furyl)-, t = 3-(2-thienyl)-, o-py = 3-(2-pyridyl)-, Clp = 3-(2-chlorophenyl)-, ... -
Stereoselective Formation of Chiral Metallopeptides
(Wiley, 2012-05-03)Playing into our hands: The achiral bipyridine amino acid fluorenylmethyloxycarbonyl 5‐amino‐3‐oxapentanoic acid (Fmoc‐O1PenBpy‐OH) has been used for the solid‐phase synthesis of metallopeptides. Circular dichroism, molecular ... -
Biomimetic Catalysts for Oxidation of Veratryl Alcohol, a Lignin Model Compound
(MDPI, 2013)Kraft pulp has to be bleached to eliminate the chromophoric structures, which cause a darkening of the pulp. In Nature, an equivalent role is assumed by ligninolytic enzymes such as lignin peroxidases, manganese peroxidases ... -
Polyamine ligand-mediated self-assembly of gold and silver nanoparticles into chainlike structures in aqueousSolution: towards new nanostructured chemosensors
(Wiley, 2013)Polyamine ligands are very versatile compounds due to their water solubility and flexibility. In the present work, we have exploited the binding ability of a polyamine molecular linker (L 2−) bearing different functional ... -
Rhodamine‐appended bipyridine: XOR and OR logic operations integrated in an example of controlled metal migration
(Wiley, 2014)A new bipyridyl derivative 1 bearing rhodamine B as visible fluorophore was designed, synthesized and characterized as a fluorescent and colorimetric sensor for metal ions. Interaction with Cu2+, Zn2+, Cd2+, Hg+, and Hg2+ ... -
Analytical strategies based on quantum dots for heavy metal ions detection
(SPIE Digital Library, 2014)Heavy metal contamination is one of the major concerns to human health because these substances are toxic and retained by the ecological system. Therefore, in recent years, there has been a pressing need for fast and ... -
Programmed stereoselective assembly of DNA-binding helical metallopeptides
(Royal Society of Chemistry, 2014)A flexible and versatile synthetic approach for the construction of water-stable DNA-binding chiral peptide helicates based on the solid phase peptide synthesis (SPPS) methodology is reported -
Copper(II) Complexes of Cyclams Containing Nitrophenyl Substituents: Push–Pull Behavior and Scorpionate Coordination of the Nitro Group
(American Chemical Society, 2015)The three nitrophenyl–cyclam derivatives (nitrocyclams): 1-(4-nitrophenyl)-1,4,8,11-tetraazacyclotetradecane (2), 1-(2-nitrophenyl)-1,4,8,11-tetraazacyclotetradecane (3), and 1-(2,4-dinitrophenyl)-1,4,8,11-tetraazacyclotetradecane ...