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.

Some studies in inorganic complexes. XX. Further reactions of 2-thioaminopyridine

1966 ◽  
Vol 19 (11) ◽  
pp. 2059 ◽  
Author(s):  
GJ Sutton
Keyword(s):  
Magnetic Susceptibility ◽  
Nitrogen Atom ◽  
Absorption Spectra ◽  
Infrared Spectra ◽  
Visible Region ◽  
Metal Chelates ◽  
Sulphur Atom ◽  
Inorganic Complexes

The following complexes of 2-thioamidopyridine (thiopic) were prepared and studied : [RhCl2 thiopic2]Cl,2H2O; [RhCl2 thiopic2][RhCl4 thiopic]; [RhCl, thiopic2]ClO4; [RhBr2 thiopic2]ClO4; [RhI2 thiopic2]ClO4,H2O; [Rh thiopic3][ClO4]3; [Ag thiopic]ClO4; [AuCl2 thiopic][AuCl4]; [Au thiopic2][AuI2]; [RuCl2 thiopic2], C2H5OH; [Os thiopic3]Br3; [Cr thiopic3]Br3; [MnI3 thiopic2]; [In thiopic3]Cl3,H2O. The following substances were also prepared and studied: [RhI2 pic2]I2,H2O; [RhCl, en,]Cl,H2O; [Rh phenan3]Br3 (where pic is 2-aminomethylpyridine, en is ethylenediamine, and phenan is 1,10-phenanthroline). The conductances of all of the aforementioned substances in NN?-dimethylformamide agreed with their structures as metal chelates as indicated. Studies of absorption spectra in the visible region were also made, and infrared spectra showed that bonding had occurred through the sulphur atom of the -C(=S)NH, group in the case of rhodium(III), gold(I), gold(III), ruthenium(II), osmium(III), and silver(I) complexes, whereas with chromium(III), manganese(II), and indium(III) coordination was by the nitrogen atom. Measurements of magnetic susceptibility showed that the rhodium(III), gold(I), gold(III), ruthenium(II), and osmium(III) complexes were spin-paired, whereas those of chromium(III) and manganese(II) were spin free.

Basic halides and related species of molybdenum(III). II. Spectroscopic and magnetic properties of MoOF(H2O)3 and MoOCl(H2O)3

1976 ◽  
Vol 29 (4) ◽  
pp. 717 ◽  
Author(s):  
DJ Stabb
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Absorption Spectroscopy ◽  
Infrared Spectra ◽  
Electronic Spectra ◽  
Related Species ◽  
Bound Water ◽  
Temperature Range ◽  
Field Dependent

Two basic halides of molybdenum(111), namely MoOF(H2O)3 and MoOCl(H2O)3 (some samples containing additional loosely bound water), were investigated by absorption spectroscopy in the range 200-50000 cm-1, and by magnetic susceptibility measurements over a temperature range of 100-300 K. Infrared spectra showed bands at about 670 and 1600 cm-l, but not in the range 800-1100 cm-1. Electronic spectra showed poorly defined bands superimposed on strong general absorption. Very weak paramagnetism was observed: this was field dependent. The results are interpreted to show the compounds to be oxygen-bridged polymers [MOX(H2O)3O]n, rather than species containing Mo=O or Mo-0-H groups.

ISOLATION AND IDENTIFICATION OF TWO PHENAZINES FROM A STRAIN OF PSEUDOMONAS AUREOFACIENS

1965 ◽  
Vol 43 (9) ◽  
pp. 1055-1062 ◽  
Author(s):  
J. I. Toohey ◽  
C. D. Nelson ◽  
G. Krotkov
Keyword(s):  
Carboxylic Acid ◽  
Absorption Spectra ◽  
Infrared Absorption ◽  
Chemical Properties ◽  
The Other ◽  
Isolation And Identification ◽  
Pseudomonas Aureofaciens ◽  
Infrared Absorption Spectra

A method is described for the purification of two phenazine compounds from cultures of a strain of Pseudomonas aureofaciens. The chemical properties of the compounds are described and the ultraviolet, visible, and infrared absorption spectra are shown. One compound is identified as phenazine-1-carboxylic acid and the other is probably 2-hydroxyphenazine-1-carboxylic acid.

SYNTHESES AND ABSORPTION SPECTRA OF 2-SUBSTITUTED-3-HYDROXY-5-PYRAZOLONES: 4-n-HEXYL-5-PYRAZOLONES-4-C14

1954 ◽  
Vol 32 (9) ◽  
pp. 823-838 ◽  
Author(s):  
Paul E. Gagnon ◽  
Jean L. Boivin ◽  
Roderick MacDonald ◽  
Leo Yaffe
Keyword(s):  
Absorption Spectra ◽  
Infrared Spectra ◽  
Alkaline Solution ◽  
Diethyl Malonate ◽  
Ultraviolet Absorption ◽  
Methyl Ethyl ◽  
Specific Activities

2-Monosubstituted-3-hydroxy-5-pyrazolones were prepared from diethyl malonate itself and diethyl malonates monosubstituted with methyl, ethyl, propyl, butyl, amyl, hexyl, heptyl, and benzyl groups by condensation of the esters with o-, m-, and p-chlorophenylhydrazines, and n-hexylhydrazine. By using diethyl n-hexyl malonate-2-C14 and o-, m-, and p-chlorophenylhydrazines, and n-hexylhydrazine as starting materials the corresponding pyrazolones labelled with C14 were obtained. Their specific activities were 7.0, 8.8, 9.0, and 8.8 µc./gm. respectively. Ultraviolet absorption spectra were determined in neutral and alkaline solution and the infrared spectra were also obtained. From the data it was possible to ascribe the tautomeric structures best suited for the compounds.

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