The state of anthraquinone in sulfuric acid (UV and IR spectra)

1967 ◽  
Vol 1 (6) ◽  
pp. 565-568
Author(s):  
V. V. Kozlov ◽  
Yu. A. Kolesnik ◽  
L. A. Kazitsyna
Keyword(s):  
Sulfuric Acid ◽  
Ir Spectra ◽  
The State ◽  
Uv And Ir Spectra

Steric effects in the UV and IR spectra of alkyl and aryl thioureides, thioureas, and thiouracils

1970 ◽  
Vol 12 (3) ◽  
pp. 393-396
Author(s):  
K. A. Nuridzhanyan ◽  
V. G. Blinova
Keyword(s):  
Ir Spectra ◽  
Steric Effects ◽  
Uv And Ir Spectra

Spectral Investigations of the Effects of 60Co-Gamma Irradiation on Iodothyronine and Iodotyrosines

1987 ◽  
Vol 41 (1) ◽  
pp. 74-79
Author(s):  
A. Obaid ◽  
S. Basahl ◽  
A. Diefallah ◽  
R. Abu-Eittah
Keyword(s):  
Ir Spectra ◽  
Gamma Irradiation ◽  
Uv Spectra ◽  
Uv And Ir Spectra ◽  
60Co Gamma ◽  
Carbonyl Absorption

Solids of 3-iodo-, 3–5–di-iodotyrosine and 3,5-di-iodothyronine were irradiated by 60Co-gamma irradiation for a period of about twenty hours. The effects of irradiation were investigated through a study of the UV and IR spectra of irradiated samples. UV spectra showed the presence of a new band at 360 nm which was assigned to the formation of IO−. IR spectra showed a strong carbonyl absorption and the removal of the carboxylate band in the case of thyronine only. For comparison, the spectra of the studied compounds were investigated before irradiation.

Mechanism of Precipitate Removal of Arsenic and Bismuth Impurities from Copper Electrolyte by Antimony

2011 ◽  
Vol 402 ◽  
pp. 51-56 ◽  
Author(s):  
Fa Xin Xiao ◽  
Dao Cao ◽  
Jian Wei Mao ◽  
Xiao Ni Shen
Keyword(s):  
Sulfuric Acid ◽  
Ir Spectroscopy ◽  
Chemical Analysis ◽  
Ir Spectra ◽  
Structure Morphology ◽  
Copper Electrolyte ◽  
Removal Of Arsenic

This paper aims to discover the mechanism of removal of arsenic and bismuth from copper electrolyte under the function of antimony. The precipitate was obtained from a synthetic copper electrolyte containing 185g/L sulfuric acid, 45g/LCu2+, 10g/LAs, 0.5g/LBi and 1.2g/LSb. The structure, morphology and component of the precipitate are clarified by methods of chemical analysis, SEM, XRD, TEM and IR spectroscopy. The precipitate consists of 27.08% arsenic, 15.12% antimony, 12.08% bismuth. There are many irregular blocks, and dendritic particles on the surface.The characteristic bands in the IR spectra of the precipitate are O–H, As–OH, As–O, As–OX (X=As, Sb, Bi), Sb–OH and O–As–O. The precipitate is a mixture of microcrystalline of BiSb2O7, Bi12As2O23, SbAsO4 and (Sb,As)2O3 by XRD and electronic diffraction. The impurities of As, Sb and Bi are removed from copper electrolyte by antimony attributing to these precipitate.

ChemInform Abstract: UV and IR Spectra of the ClClO Molecule.

ChemInform ◽  
2010 ◽  
Vol 26 (31) ◽  
pp. no-no
Author(s):  
K. JOHNSSON ◽  
A. ENGDAHL ◽  
B. NELANDER
Keyword(s):  
Ir Spectra ◽  
Uv And Ir Spectra

VANILLINSÄURE ALS ENDPRODUKT DES ABBAUES VON ADRENALIN UND NORADRENALIN

1962 ◽  
Vol 39 (3) ◽  
pp. 385-394 ◽  
Author(s):  
Wilhelm Dirscherl ◽  
Helmut Thomas ◽  
Herbert Schriefers
Keyword(s):  
Melting Point ◽  
Ir Spectra ◽  
Paper Chromatography ◽  
Column Chromatography ◽  
Human Urine ◽  
Vanillic Acid ◽  
Mandelic Acid ◽  
Uv And Ir Spectra ◽  
Rat Livers

ABSTRACT In rat livers perfused with 3-methoxy-4-hydroxy-mandelic acid, formerly believed to be the endproduct of the metabolism of adrenaline and noradrenaline, three metabolites were detected by paper chromatography. After further purification by column chromatography, one of these substances was identified by melting point, shape of crystals, UV- and IR-spectra as vanillic acid. Perfusion with vanillic acid yielded only one metabolite in very small quantities. Because of its properties it is assumed to be a conjugate of vanillic acid. Hence vanillic acid, isolated in 1959 from human urine by Dirscherl & Schmidtmann, is the actual endproduct of the metabolism of adrenaline and noradrenaline.

scholarly journals Compounds of Complex Halo and Pseudohalo Acids of the Group II B Metals, Part I Etherate, Pyridine and Aniline Compounds of Zn(II)

1979 ◽  
Vol 34 (8) ◽  
pp. 1101-1106 ◽  
Author(s):  
A. G. Galinos ◽  
J. K . Kouinis ◽  
P. V. Ioannou ◽  
Th. F . Zafiropoulos ◽  
S. P. Perlepes
Keyword(s):  
Solid State ◽  
Ir Spectra ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Uv And Ir Spectra ◽  
Group Ii ◽  
Physical And Chemical ◽  
And Chemical Properties

The preparation of sixteen new etherate, pyridine and aniline compounds of complex halo and pseudohalo acids of Zn(II) is reported.The study of some physical and chemical properties as well as the UV and IR spectra of these compounds are discussed. Tetrahedral structures are proposed for all compounds in the solid state

Halogenokomplexe von Osmium(III) mit Pyridin, Pyrazin, Pyrimidin und einigen Methylhomologen.

1976 ◽  
Vol 31 (8) ◽  
pp. 1099-1105 ◽  
Author(s):  
A. Scheffler ◽  
W. Preetz
Keyword(s):  
Ir Spectra ◽  
Ligand Exchange ◽  
Mass Spectra ◽  
Exchange Reactions ◽  
Uv And Ir Spectra ◽  
Chromatographic Isolation

The preparation of mer-[OsX3B3], X = Cl, Br, I; B = pyridine, 3-resp. 4-picoline, pyrimidine, pyrazine, methylpyrazine, and the chromatographic isolation of four basemixed stereoisomers mer-[OsX3(py)n(mepyz)3-n], n= 1, 2, as solid crystalline products is described. Mass spectra and ligand exchange reactions confirm the structure of these complexes. The UV and IR spectra are discussed.

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