Complexes of 8-Amino-2-methylquinoline with divalent iron, cobalt, nickel, copper, and zinc sulphates

1970 ◽  
Vol 23 (7) ◽  
pp. 1375 ◽  
Author(s):  
MR Litzow ◽  
LF Power ◽  
AM Tait

The complexes formed by 8-amino-2-methylquinoline (maq) with iron(11), cobalt(11), nickel(11), copper(11), and zinc(11) sulphates have been prepared. The visible spectra, conductivities, and infrared spectra favour the assignment of dimeric octahedral stereochemistries for the copper(11) and zinc(11) complexes, involving ohelating sulphato groups. The complexes of iron(11), nickel(11), and cobalt(11) appear to be octahedral and monomeric with monodentate sulphato groups.


2021 ◽  
Vol 2 (1) ◽  
pp. 63-73
Author(s):  
Jéssica D. S. Vicente ◽  
Domingas C. Miguel ◽  
Afonso M. P. Gonçalves ◽  
Diogo M. Cabrita ◽  
José M. Carretas ◽  
...  

Ionic liquids are critical reagents for science and technical processes nowadays. Metals are the most used reagents in the industry. It is crucial to have a deeper understanding of how ionic liquids and metals could interact. In this article the interaction of those two families of compounds is accessed. The dissolution (reaction) of metals with ionic liquids is studied, namely the influence of temperature, redox potential, and availability of an oxidant in the process. The final state achieved by the iron metal samples was also addressed by Mössbauer spectroscopy.



2007 ◽  
pp. 251-256 ◽  
Author(s):  
George B. Kauffman ◽  
Richard A. Albers ◽  
Fred L. Harlan ◽  
R. Scott Stephens ◽  
Ronald O. Ragsdale




1978 ◽  
Vol 31 (11) ◽  
pp. 2409 ◽  
Author(s):  
HKJ Powell ◽  
JM Russell

The iron(II), nickel(II) and zinc(II) complexes of the diamine dioxime ligand 4,4,9,9-tetramethyl-5,8-diazadodecane-2,11-dione dioxime (H2dddo) and the cobalt(II), nickel(II) and zinc(II) complexes of its O-methyl ether (Hddmo) have been studied potentiometrically at 25°C, I 0.10M NaCl. Stability constant data are compared with those obtained for the copper(II) and cobalt(II) complexes of H2dddo and the copper(II) complexes of Hddmo. H2dddo coordinates in the oxime-oximato form [M(Hdddo)]+ with iron(II), cobalt(II), nickel(II) and zinc(II) Hddmo forms complexes with the ligand coordinated in the oxime form [M(Hddmo)]2+ and the oximato form [M(ddmo)]+. The complexes [Zn(Hddmo)2]2+, [Zn(Hddmo)(ddmo)]+ and [Co(ddmo)(OH)] were also characterized in aqueous solution. The stability order FeII < CoII < NiII < CuII > ZnII was observed for the formation of 1 : 1 complexes with the ligands Hdddo- (log K = 8.8, 11.7, 15.2, 23.3, 12.0 for Fe to Zn respectively) and Hddmo (5.7, 6.6, 12.1, 5.3 for Co to Zn). The infrared spectra of the complexes [Ni(Hdddo)] ClO4,H2O and [Zn(Hdddo)] ClO4 are discussed in terms of oxime-oximato hydrogen bonding.



1976 ◽  
Vol 48 (11) ◽  
pp. 1517-1519 ◽  
Author(s):  
Elvio. Giovannini ◽  
Giovanni B. Principato ◽  
Francesco. Rondelli




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