Exploration of unconventional π–hole and C–H⋯H–C types of supramolecular interactions in a trinuclear Cd(ii) and a heteronuclear Cd(ii)–Ni(ii) complex and experimental evidence for preferential site selection of the ligand by 3d and 4d metal ions

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 39376-39386 ◽  
Author(s):  
Saikat Banerjee ◽  
Antonio Bauzá ◽  
Antonio Frontera ◽  
Amrita Saha
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Experimental Evidence ◽  
Schiff Base Ligand ◽  
Site Selection ◽  
Supramolecular Interactions ◽  
Preferential Site ◽  
Selection Of

We report the synthesis of a trinuclear cadmium(ii) (1) and a di(phenoxido)-bridged dinuclear cadmium(ii)–nickel(ii) (2) complex derived from a bicompartmental (N2O4) Schiff base ligand.

scholarly journals Synthesis and Spectral Analysis of Some Metal Ions Complexes with Mixed Ligands of Schiff Base and 1, 10-Phenanthroline

2017 ◽  
Vol 14 (1) ◽  
pp. 135-147
Author(s):  
Baghdad Science Journal
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Metal Complexes ◽  
Mass Spectrometer ◽  
Schiff Base Ligand ◽  
Metal Ion ◽  
Molecular Structures ◽  
Spectroscopic Techniques ◽  
Metal Ion Complexes ◽  
Free Schiff Base

The free Schiff base ligand (HL1) is prepared by being mixed with the co-ligand 1, 10-phenanthroline (L2). The product then is reacted with metal ions: (Cr+3, Fe+3, Co+2, Ni+2, Cu+2 and Cd+2) to get new metal ion complexes. The ligand is prepared and its metal ion complexes are characterized by physic-chemical spectroscopic techniques such as: FT-IR, UV-Vis, spectra, mass spectrometer, molar conductivity, magnetic moment, metal content, chloride content and microanalysis (C.H.N) techniques. The results show the formation of the free Schiff base ligand (HL1). The fragments of the prepared free Schiff base ligand are identified by the mass spectrometer technique. All the analysis of ligand and its metal complexes are in good agreement with the theoretical values indicating the purity of Schiff base ligand and the metal complexes. From the above data, the molecular structures for all the metal complexes are proposed to be octahedral

GET: A Function for Preferential Site Selection of Additional Borehole Drilling

2004 ◽  
Vol 13 (1-4) ◽  
pp. 139-146 ◽  
Author(s):  
A.A. HASSANIPAK ◽  
M. SHARAFODIN
Keyword(s):  
Site Selection ◽  
Estimation Error ◽  
Central Iran ◽  
Vertical Column ◽  
Preferential Site ◽  
Borehole Drilling ◽  
Average Estimation Error ◽  
Linear Product ◽  
Selection Of

Abstract The essential aims of additional borehole drilling are to improve the reliability of grade and tonnage estimates in each reserve class and to increase ore tonnages. The “GET” function presented in this paper considers strategies for achieving both of these goals simultaneously, and therefore is advantageous for selecting sites for additional boreholes. The “GET” function is either a linear or a non-linear product of three variables G, E, and T: f(G,E,T,) = GαEβTγ where the values of any or all of the exponents α, β, and γ may differ from unity at the discretion of the user. G and E are the average estimated block grade and the average estimation error for ore blocks in one vertical column, and T is the compounded ore thickness within the column. To illustrate its utility, the GET function has been used for determination of the most advantageous sites for additional drilling in the Shah-Kuh Pb-Zn deposit in west central Iran.

Construction of a 1-D Sm(iii) coordination polymer with a long-chain Schiff base ligand: dual-emissive response to metal ions

2020 ◽  
Vol 7 (2) ◽  
pp. 464-469 ◽  
Author(s):  
Jieni Liu ◽  
Ting Zhu ◽  
Xiaoping Yang ◽  
Hongfen Chen ◽  
Dongliang Shi ◽  
...  
Keyword(s):  
Schiff Base ◽  
Coordination Polymer ◽  
Metal Ions ◽  
Schiff Base Ligand ◽  
Ppm Level ◽  
Long Chain

A 1-D coordination polymer [Sm(HL)2(NO3)]n was constructed using a new flexible Schiff base ligand that has a long-chain (CH2)10 backbone, and it shows dual-emissive response to metal ions, especially to Co2+ at the ppm level.

scholarly journals An antipyrine based fluorescence “turn-on” dual sensor for Zn2+ and Al3+ and its selective fluorescence “turn-off” sensing towards 2,4,6-trinitrophenol (TNP) in the aggregated state

2019 ◽  
Vol 18 (11) ◽  
pp. 2717-2729 ◽  
Author(s):  
Sudipto Dey ◽  
Ashim Maity ◽  
Milan Shyamal ◽  
Debasish Das ◽  
Samir Maity ◽  
...  
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Schiff Base Ligand ◽  
Turn On ◽  
Dual Sensor ◽  
Fluorescence Turn On

A 2,6-diformyl-p-cresol (DFC)-4-amino antipyrine (AP) based dual signaling fluorescent Schiff base ligand (DFCAP) is found to exhibit colorimetric and fluorescence turn on selective sensing towards metal ions, Zn2+ and Al3+.

COMPLEXES OF SOME METAL IONS WITH A SCHIFF BASE LIGAND DERIVED FROM ISATIN AND O-AMINOPHENOL

2010 ◽  
Vol 104 (3) ◽  
pp. 121-124 ◽  
Author(s):  
Aly M. Hassaan ◽  
Mohamed A. Khalifa ◽  
Aziza K. Shehata
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Schiff Base Ligand

Kinetics of Schiff base ligand transfer and rate enhancement by metal ions

1973 ◽  
Vol 26 (11) ◽  
pp. 2541 ◽  
Author(s):  
WW Fee ◽  
A Gaetano
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Schiff Base Ligand ◽  
Chain Reaction ◽  
Schiff Base Ligands ◽  
Rate Enhancement ◽  
Rate Acceleration ◽  
Ligand Transfer ◽  
Kinetics Of

The kinetics of the transfer of Schiff base ligands between their nickel(II) and zinc(II) complexes have been examined in dmso. Reactions completed in the presence of added nickel(II) and zinc(II) ions indicate the occurrence of a coordination chain reaction with rate acceleration prompted by one chain initiating and one chain propa- gating step.

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