Results 291 to 300 of about 95,990 (357)

Cobalt(II) gluconate complexes

Australian Journal of Chemistry, 1970
A study of the cobalt(11) gluconate system has confirmed the existence of an unstable cationic species [Co(C6H1107)]+, in solutions of pH <7.5, and two insoluble compounds, CO2(OH)3(C6H11O7),xH2O and CO3(C6H10O7)2(OH)2,2H2O, formed in solutions of pH 7.5-9.5.
JF Ashton, WF Pickering
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Diazabutadiene cobalt(II) complexes

Transition Metal Chemistry, 1986
Studies on the chelates of cobalt(II) with the bidentate ligands 1,4-diphenyl(2,3-dimethyl-1,4-diazabutadiene) (PMB) and 1,4-di(p-methoxyphenyl)-2,3-dimethyl-1,4-diazabutadiene (MPMB) have been carried out. On the basis of elemental analyses, the complexes are [Co(PMB)Cl2], [Co(PMB)2(C1O4)2], [Co(MPMB)Cl2] and [Co(MPMB)2(ClO4)2].
Mar�a Jos� Camaz�n, Amparo Alvarez-Vald�s, Jos� R. Masaguer, Maria Carmen Navarro-Ranninger   +3 more
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NN-dialkylcarbamato-complexes of cobalt(II)

Journal of the Chemical Society, Dalton Transactions, 1984
By reaction of anhydrous cobalt(II) chloride with a secondary amine and carbon dioxide in a hydrocarbon solvent, NN-dialkylcarbamato-complexes of cobalt(II), [Con(O2CNR2)2n](R = Et or Pri), have been prepared. The crystal and molecular structure of the hexameric violet derivative, [Co6(O2CNEt2)12], has been solved by X-ray diffraction methods.
BELLI, DANIELA, CALDERAZZO, FAUSTO, B. GIOVANNITTI, G. PELIZZI   +3 more
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Pyrazole complexes of cobalt(II)

Journal of the Chemical Society A: Inorganic, Physical, Theoretical, 1970
Cobalt acetylacetonates react with hydrazine hydrate in ethanolic solution to give bis-(3,5-dimethylpyrazolato)-cobalt(II). This and the corresponding salts of pyrazole and 3-methylpyrazole can also be prepared from cobalt(II) salts in basic solution. These compounds are believed to possess polymeric tetrahedral structures. In the absence of added base
M. J. Bagley, D. Nicholls, B. A. Warburton   +2 more
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Zwitterionic complexes of cobalt(II)

Journal of the Chemical Society, Dalton Transactions, 1973
Pseudotetrahedral zwitterionic complexes of stoicheiometry [CoX3–L–L+], where X = Cl, Br, or I and L–L+ represents the cationic ligands Ph2PC2H4N(H)R2(R = H, Me, or Et) have been prepared by the reaction of L–LX– with CoX2. In the cases R = Me or Et, identical complexes were also prepared by the reaction of cobalt(II) halides with the unprotonated ...
R. A. Kolodny, T. L. Morris, R. C. Taylor   +2 more
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Cobalt(II) complexes with hydantoin

Russian Journal of Inorganic Chemistry, 2008
Complexes of Co(II) with hydantoin (L, C3H4N2O2) have been synthesized. The complexes had the following compositions: [CoL2(OH2)2](NO3)2 · 2H2O, [CoL2(OH2)2]Cl2 · 3H2O, and [CoL2(OH2)2]SO4 · 2H2O. The individual character of the synthesized compounds are proved by the study of the IR absorption spectra (400–4000 cm−1) of all the compounds and the ...
L. N. Ambroladze, Ts. D. Turkadze, I. Z. Moseshvili   +2 more
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Low-spin cobalt(II) complexes. Part II. Cyanide complexes

Journal of the Chemical Society A: Inorganic, Physical, Theoretical, 1967
The complexes present in freshly-prepared solutions containing cobalt(II) and cyanide ions have been investigated. The main complex is identified as the hexaco-ordinate [Co(CN)5H2O]3– by comparison of its spectrum with those of the analogous isocyanide complexes.
J. M. Pratt, R. J. P. Williams
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Cobalt(II) Complexes of Isothiazole

Canadian Journal of Chemistry, 1971
The preparation and spectral properties are reported for complexes of CoX2 (X = Cl, Br, I) and Co(ClO4)2 with isothiazole (L). The following complexes have been prepared: CoL2X2, CoL4X2, and CoL6(ClO4)2. In the solid state, CoL2X2 (X = Br, Cl) are octahedral and polymeric, CoL4X2 (X = Br, Cl) are octahedral, CoL2I2 is tetrahedral, [CoL6](ClO4)2 is ...
R. Rivest, A. Weisz
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Cobalt(II) complexes of pyradine

Inorganica Chimica Acta, 1970
Abstract Pyridine complexes of cobalt(II) perchlorate, tetrafluoroborate, and nitrate have been prepared and studied by a variety of physical methods in both the solid and solution states. Their behavior is found to be generally similar to that of their nickel(II) analogues.
D.W. Herlocker, M.R. Rosenthal
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