A ‘chromogenic’ and ‘fluorogenic’ bis-Schiff base sensor for rapid detection of hydrazine both in solution and vapour phases

2015 ◽  
Vol 7 (24) ◽  
pp. 10385-10393 ◽  
Author(s):  
Anupam Ghorai ◽  
Jahangir Mondal ◽  
Sumantra Bhattacharya ◽  
Goutam Kumar Patra
Keyword(s):  
Hydrogen Bonding ◽  
Schiff Base ◽  
Gas Phase ◽  
Schiff Base Ligand ◽  
Biological Samples ◽  
Rapid Detection ◽  
Cost Effective ◽  
Colorimetric Probe ◽  
Environmental And Biological Samples

A simple, cost effective Schiff base ligand has been exploited as a fluorescent-colorimetric probe for rapid detection of hydrazine both in liquid and gas phase based on hydrogen bonding recognition. It has good practical applicability in different environmental and biological samples.

A Novel and Cost Effective Isatin Based Schiff Base Fluorophore: Highly Efficient “Turn-Off” Fluorescent Sensor for the Selective Detection of Cysteine in Aqueous Medium

2021 ◽  
Author(s):  
SAVITHA D P ◽  
Deepa Sebastian ◽  
Anjali Krishna G ◽  
P. V. Mohanan
Keyword(s):  
Mass Spectrometry ◽  
Schiff Base ◽  
Aqueous Medium ◽  
13C Nmr ◽  
Schiff Base Ligand ◽  
Fluorescent Sensor ◽  
Cost Effective ◽  
Spectroscopic Methods ◽  
Selective Detection ◽  
Uv Visible

A novel schiff base ligand 3-(2-Amino-4, 5-dimethyl-phenylimino)-5-phenyl-1, 3-dihydro-indol-2-one (MPD 5MI) and was characterized using spectroscopic methods including UV visible, Infrared, 1H-NMR, 13C-NMR and mass spectrometry. The essential fluorescence properties such...

scholarly journals New Mononuclear Mn(III) Complexes with Hydroxyl-Substituted Hexadentate Schiff Base Ligands

2021 ◽  
Vol 7 (1) ◽  
pp. 12
Author(s):  
Peng-Yu Xu ◽  
Yu-Ting Wang ◽  
Zong-Mei Yu ◽  
Yong-Hua Li ◽  
Shi Wang
Keyword(s):  
Magnetic Properties ◽  
Hydrogen Bonding ◽  
Schiff Base ◽  
Crystal Structures ◽  
Schiff Base Ligand ◽  
High Spin State ◽  
Close Packing ◽  
Schiff Base Complexes ◽  
Schiff Base Ligands ◽  
Hydrogen Bonding Interactions

This paper reports the syntheses, crystal structures and magnetic properties of Mn(III) hexadentate Schiff base complexes [Mn(4-OH-sal-N-1,5,8,12)]NO3(1) and [Mn(4-OH-sal-N-1,5,8,12)]ClO4(2), where (4-OH-sal-N-1,5,8,12)2− (4,4′-((1E,13E)-2,6,9,13-tetraazatetradeca-1,13-diene-1,14-diyl)bis(3-methoxyphenol) is a new hydroxyl-substituted hexadentate Schiff base ligand. The introduction of the (4-OH-sal-N-1,5,8,12)2− ligand induces more hydrogen bonding interactions, in addition to promoting the formation of intermolecular interactions among the cations. However, the close-packing structures of both complexes lead to their stabilization in the high-spin state in the temperature range of 2−300 K.

Binuclear CuLn complexes (LnIII=Gd, Tb, Dy) of alcohol-functionalized bicompartmental Schiff-base ligand. Hydrogen bonding and magnetic behaviors

2016 ◽  
Vol 439 ◽  
pp. 24-29 ◽  
Author(s):  
Fatima Zohra Chiboub Fellah ◽  
Soumia Boulefred ◽  
Abdelghani Chiboub Fellah ◽  
Bahjat El Rez ◽  
Carine Duhayon ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Schiff Base ◽  
Schiff Base Ligand

Rapid detection of an anthrax biomarker based on the recovered fluorescence of carbon dot–Cu(ii) systems

2017 ◽  
Vol 5 (28) ◽  
pp. 6962-6972 ◽  
Author(s):  
Pingjing Li ◽  
Ann Nee Ang ◽  
Huatao Feng ◽  
Sam F. Y. Li
Keyword(s):  
Biological Samples ◽  
Rapid Detection ◽  
Dipicolinic Acid ◽  
Sensitive Detection ◽  
Carbon Dot ◽  
Environmental And Biological Samples

The sensitive detection of dipicolinic acid (DPA) is strongly associated with the sensing of bacterial organisms in environmental and biological samples.

scholarly journals Di-μ-acetato-κ4 O:O-bis({2-[(piperidin-2-ylmethyl)iminomethyl]phenolato-κ3 N,N′,O}copper(II)) monohydrate

2012 ◽  
Vol 68 (6) ◽  
pp. m833-m833
Author(s):  
Xiao-qin Wang
Keyword(s):  
Hydrogen Bonding ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Title Compound ◽  
Planar Geometry ◽  
Hydrogen Bonding Interactions

In the binuclear centrosymmetric title compound, [Cu2(C13H17N2O)2(C2H3O2)2]·H2O, the CuII atom is coordinated by two N atoms and one O atom from the Schiff base ligand and an acetate O atom in a distorted suare-planar geometry. The water O atom is invoved in three different hydrogen-bonding interactions, as donor to the acetate O atom and to the the ligand O atom and as acceptor to a ligand N atom.

scholarly journals Symmetry in Recognition of Supramolecular Synthons–Competition between Hydrogen Bonding and Coordination Bond in Multinuclear CuII–4f Complexes with Bicompartmental Schiff Base Ligand

Symmetry ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 460
Author(s):  
Barbara Miroslaw ◽  
Dariusz Osypiuk ◽  
Beata Cristóvão ◽  
Halina Głuchowska
Keyword(s):  
Hydrogen Bonding ◽  
Schiff Base ◽  
Schiff Base Ligand ◽  
Topological Analysis ◽  
Coordination Bond ◽  
Supramolecular Polymer ◽  
X Ray Diffraction ◽  
Magnetic Studies ◽  
Covalently Bonded ◽  
Supramolecular Aggregates

Classic Cu–O coordination bonds in 1 or elongated semi-coordination ones in 2 and 3 were applied to construct CuII–4f complexes composed of trinuclear subunits linked through μ-NO3− ions with formulae given as [Cu2Tm(H2tehy)2]2(NO3)6·H2O, (1), {[Cu2Ho(H2tehy)2(NO3)2][Cu2Ho(H2tehy)2(H2O)2]}(NO3)4·2H2O, (2), and {[Cu2Er(H2tehy)2(H2O)]2([Cu2Er(H2tehy)2(NO3)]2}(NO3)10·2H2O·4CH3OH, (3), where H2tehy = C19H20N2O4 is a tetrahydroxy Schiff base ligand. Topological analysis showed that the same characteristic motif of coordination accompanied by hydrogen bonds involving the uncoordinated nitrate oxygen atom and ligand’s phenoxy O atoms is responsible for linking trinuclear subunits into a hexanuclear one as well as for bridging the hexanuclear coordination units in 3 into a 1D supramolecular polymer, with the Cu–O distance being 3.19(1) Å, much longer than the limit of a semi-coordination bond (3.07 Å). The Cambridge Structural Database was used to discuss issues of crystallographic criteria (distance and angular preferences) for the assessment of the stabilizing or destabilizing effect of hydrogen bonding on coordination. The presented results show that the symmetrically repeated arrangement of molecules may provide a useful tool for identifying higher order non-covalently bonded supramolecular aggregates. The complexes 1–3 have been characterized by X-ray diffraction, FTIR, and thermal analysis. The magnetic studies indicated the ferromagnetic interaction between CuII and HoIII ions.

Spin-crossover in an iron(iii) complex showing a broad thermal hysteresis

2021 ◽  
Author(s):  
Cyril Rajnák ◽  
Romana Mičová ◽  
Ján Moncoľ ◽  
Ľubor Dlháň ◽  
Christoph Krüger ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Mononuclear Complex ◽  
Hysteresis Width ◽  
Thermally Induced

A pentadentate Schiff-base ligand 3,5Cl-L2− and NCSe− form a iron(iii) mononuclear complex [Fe(3,5Cl-L)(NCSe)], which shows a thermally induced spin crossover with a broad hysteresis width of 24 K between 123 K (warming) and 99 K (cooling).

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