Magnetic properties of lithium salt of nitroxyl free-radical carboxylic acid (4-carboxy-TEMPO)

2017 ◽  
pp. 1365-1365
Author(s):  
R. T. Pardasani ◽  
P. Pardasani
Keyword(s):  
Magnetic Properties ◽  
Free Radical ◽  
Carboxylic Acid ◽  
Lithium Salt

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

1969 ◽  
Vol 22 (9) ◽  
pp. 1841 ◽  
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.

Some studies in inorganic complexes. XXIV. Copper(II) complexes of 2-acetamidopyridine and 2-methylpyridine-6-carboxylic acid

1969 ◽  
Vol 22 (9) ◽  
pp. 1835 ◽  
Author(s):  
KH Shaw ◽  
GJ Sutton
Keyword(s):  
Magnetic Properties ◽  
Carboxylic Acid ◽  
Infrared Spectra ◽  
Coordinate Structure ◽  
Inorganic Complexes ◽  
Methyl Pyridine

Complexes of copper(II) with 2-acetamidopyridine (acpy) and with 2- methyl-pyridine-6-carboxylic acid (mepiac-H) have been prepared. The compounds studied included [Cu(acpy)2Cl2], [Cu(acpy)2Br2], [Cu(acpy)2(NCS)2], [Cu(acpy)2(NO3)2], [Cu(acpy)2(H2O)ClO4]ClO4,H2O, [Cu(mepiac)(mepiac-H)Cl], [Cu(mepiac)(mepiac-H)-Br], [Cu(mepiac)(mepiac-H)BrH2O], and [Cu(mepiac)2H2O]. The magnetic properties, conductances, reflectance and solution spectra, as well as infrared spectra, are in agreement with the copper(II) complexes of acpy being six-coordinate and those of mepiac-H having a five- coordinate structure.

scholarly journals Functionalization and Chemical Modification of 2-Hydroxyethyl Methacrylate with Carboxylic Acid

2012 ◽  
Vol 9 (3) ◽  
pp. 1135-1144 ◽  
Author(s):  
Mohammad Hossein Nasirtabrizi ◽  
L. Zargin ◽  
S. Khodabandlou ◽  
S. Rostamzadeh Mansour
Keyword(s):  
Thermal Analysis ◽  
Free Radical ◽  
Carboxylic Acid ◽  
Addition Reaction ◽  
Molar Ratio ◽  
Esterification Reaction ◽  
Hydroxyethyl Methacrylate ◽  
H Nmr ◽  
Temperature Ranges ◽  
Ft Ir

Free radical polymerization of the resulting monomers methyl methacrylate (MMA), ethyl methacrylate (EMA), methylacrylate (MA) and ethylacrylate (EA) with 2-hydroxyethyl methacrylate (HEMA) (in 1:1 mole ratio) were carried out using azobis(isoboutyronitrile) (AIBN) as initiator at the temperature ranges 60-70°C. The modification of polymers were carried out by 9-anthracenecarboxylic acid (9-ACA) via the esterification reaction between —OH of poly(HEMA) and —COOH of 9-ACA, in presence of N,N′-dicyclohexyl-carbodiimide (DCC), 4-(dimethylamino) pyridine (DMAP) and N,N-dimethyl formamid (DMF). It was found that the molar ratio acid/alcohol/catalysts= 0.02: 0.02: 0.02 and 0.002, optimal for preparation of the ester. As demonstrated by FT-IR,1H-NMR and dynamic mechanical thermal analysis (DMTA). The Tg value of methacrylate and acrylate copolymers containing 9-ACA groups was found to increase with incorporation of 9-ACA groups in polymer structures. The presence of 9-ACA groups in the polymer side chains created new polymers with novel modified properties that find some applications in polymer industry. These anthracenic factors could take part in cyclo addition reaction with other factors such as anhydrides and kinons.

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