ChemInform Abstract: PREPARATION, INFRARED SPECTRA, VISIBLE REFLECTANCE SPECTRA, AND MAGNETIC MOMENTS OF COPPER(II) COMPLEXES OF N,N′-DI(2-HYDROXYETHYL)ETHYLENEDIAMINE, N-(2-HYDROXYETHYL)ETHYLENEDIAMINE, AND N-(2-HYDROXYPROPYL)ETHYLENEDIAMINE

The complexes of the Mn(II), Fe (II), Co(II), Ni(II), and Gu(II) halides with pyrazine (1,4-diazine), pyrimidine (1,3-diazine), and pyridazine (1,2-diazine) were prepared and studied by various physical methods. Reflectance spectra, infrared spectra from 4000–80 cm−1, and magnetic moments were determined. The data are suggestive of an octahedral environment involving halide and azine bridging in the 1: 1 complexes, and an octahedral environment involving halide bridging and terminal azines in the 1: 2 complexes.

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Transition metal acetates

Canadian Journal of Chemistry ◽

10.1139/v68-572 ◽

1968 ◽

Vol 46 (22) ◽

pp. 3443-3446 ◽

Cited By ~ 90

Author(s):

D. A. Edwards ◽

R. N. Hayward

Keyword(s):

Solid State ◽

Thermogravimetric Analysis ◽

Transition Metal ◽

Infrared Spectra ◽

Magnetic Moments ◽

Acetate Group ◽

Visible Spectra

Some anhydrous transition metal acetates (Mn(II), Co(II), Cu(II), Ni(II), Zn(II), Ag(I), Mo(II), Ce(III), La(III)) have been prepared and their infrared spectra measured in the solid state. The infrared spectra have been related to established modes of bonding of the acetate group to metals. Thermal decompositions of the anhydrous acetates have been investigated by thermogravimetric analysis; magnetic moments and visible spectra have been measured.

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Effects of the hunting method on meat quality from fallow deer and wild boar and preliminary studies for predicting lipid oxidation using visible reflectance spectra

European Journal of Wildlife Research ◽

10.1007/s10344-014-0814-3 ◽

2014 ◽

Vol 60 (3) ◽

pp. 519-526 ◽

Cited By ~ 15

Author(s):

Giulia Francesca Cifuni ◽

Andrea Amici ◽

Michela Contò ◽

Paolo Viola ◽

Sebastiana Failla

Keyword(s):

Lipid Oxidation ◽

Wild Boar ◽

Meat Quality ◽

Fallow Deer ◽

Reflectance Spectra ◽

Visible Reflectance

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Some studies in inorganic complexes. XXV. Cobalt(II) and nickel(II) complexes of 2-Acetamidopyridine and 2-Aminomethyl-6-rnethylpyridine, and the cobalt(II) complex of 2-Methylpyridine-6-carboxylic acid

Australian Journal of Chemistry ◽

10.1071/ch9691841 ◽

1969 ◽

Vol 22 (9) ◽

pp. 1841 ◽

Cited By ~ 23

Author(s):

KH Shaw ◽

GJ Sutton

Keyword(s):

Magnetic Properties ◽

Carboxylic Acid ◽

Absorption Spectra ◽

Infrared Spectra ◽

Reflectance Spectra ◽

Inorganic Complexes

Complexes of cobalt(II) and nickel(II) with the ligands 2- acetamidopyridine (acpy) and 2-aminomethyl-6-methylpyridine (mepic) have been prepared and studied. They included [Co(acpy)2X2], [Co(mepic)2X2], [Ni(acpy)2X2], and [Ni-(mepic)2X2], in which X is Cl, Br, I, or NCS; [Co(acpy)2(NO3)2], [Co(mepic)2(NO3)2], [Ni(acpy)2(NO3)2], [Ni(mepic)3NO3]NO3, [Co(acpy)3](ClO4)2, [Co(mepic)3](ClO4)2, [Co(mepic)3](CoCl4), [Ni(acpy)2(H2O)2](ClO4)2, and [Ni(mepic)2(H2O)2](ClO4)2. The inner complex of 2-methylpyridine-6- carboxylic acid [Co(mepiac)2,2H2O)] was also isolated. In all cases, the magnetic properties, conductances, reflectance spectra, absorption spectra, and infrared spectra are in agreement with the concept that they are spin-free, six-coordinate octahedral complexes. The substance [Ni(mepic)2NO3]NO3 contains both bidentate and ionic nitrate.

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Cobalt(II), nickel(II) and copper(II) complexes of some 2'-hydroxychalcones

Australian Journal of Chemistry ◽

10.1071/ch9800737 ◽

1980 ◽

Vol 33 (4) ◽

pp. 737 ◽

Cited By ~ 58

Author(s):

M Palaniandavar ◽

C Natarajan

Keyword(s):

Infrared Spectra ◽

Metal Ion ◽

Magnetic Moments ◽

Phenyl Group ◽

Ligand Field ◽

Square Planar ◽

Spin Pairing ◽

Square Configuration ◽

Electron Sink ◽

Octahedral Configuration

Metal(II) bis-chelates of the type ML2 [M = CoII, NiII, CuII; L = 2'- hydroxy-5'-X-chalcone where X = H, CH3, Cl] have been prepared and studied. Structures have been assessed by the measurement of magnetic moments, ligand field and infrared spectra and thermal properties. These chelates possess low-spin trans-square-planar configuration and show resistance to adduct formation in contrast to metal(II) chelates of β-diketones, salicylaldehyde, o-hydroxyaryl ketones and esters and o-hydroxy-crotonophenones, which have high-spin octahedral configuration. Extensive conjugation lowers the energy of the π3* orbital which enters into a very strong dπ-π3* interaction leading to spin-pairing. �� Infrared spectra indicate that the carbonyl group is perturbed only slightly by coordination to metal. A change in metal ion affects v(C=O), v(M-O) and other vibrations and the order of stability, namely, Co ≈ Ni < Cu, inferred from these vibrations is as expected for the low-spin square configuration of the chelates. Introduction of substituents (5'-X) alters only v(M-O) significantly and the order of stability, namely, Cl > CH3 > H, derived from v(M-O) is consistent with Taft's resonance polar parameters of the substituents. All these observations are explained by the electron sink property of the phenyl group.

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