Results 251 to 260 of about 251,192 (298)

Cobalt(II) and cobalt(III) coordination compounds

Journal of Chemical Education, 1989
This experiment illustrates the formation of tris(phenanthroline)cobalt complexes in the +2 and +3 oxidation states, the effect of coordination on reactions of the ligand, and the use of a ligand displacement reaction in recovering the transformed ligand.
Nicholas C. Thomas, Katrina Pringle, Glen B. Deacon   +2 more
openaire   +1 more source

Cobalt(II) Chloride

2008
[7646-79-9] Cl2Co (MW 129.84) InChI = 1S/2ClH.Co/h2*1H;/q;;+2/p-2 InChIKey = GVPFVAHMJGGAJG-UHFFFAOYSA-L (catalyst for functional group transformations,1-13 CC bond formations,8, 12, 14-17 oxidations and reductions,18-27 carbonylations28, 29) Physical Data: mp 86 °C; loses 6H2O at 110 °C; d 3.356 g cm−3 ...
Mariappan Periasamy, Maddali L. N. Rao, Javed Iqbal, T. Punniyamurthy   +3 more
openaire   +1 more source

Polarographic study on cobalt(II)-acetate and cobalt(II)-propionate complexes

Journal of Inorganic and Nuclear Chemistry, 1971
Abstract The formation constants of the systems cobalt(II)-acetate and cobalt(II)-propionate have been measured at 25 and 50°C, ionic strength 1·0 and pH 5·0, using the ion-indicator polarographic method with slight modifications. The method was tested by measuring the constants of the cobalt(II)-acetate system at 25°C by a pH method.
Pascual Héctor Tedesco, Velia B. De Rumi   +1 more
openaire   +1 more source

Determination of Cobalt(II)‐EDTA, Cobalt(III)‐EDTA, and Cobalt(II) in an Aqueous Solution

Journal of Environmental Quality, 1996
AbstractThe determination of Co‐EDTA species is critical to the understanding of radionuclide migration in the environment, as well as determining efficiencies of various complexed‐Co treatment technologies. A new, simple column‐oxidation separation methodology was devised to determine the fraction of uncomplexed Co(II), Co(II)‐EDTA, and Co(III)‐EDTA ...
David M. Ayres, Allen P. Davis
openaire   +1 more source

Cobalt(II) Acetate

2009
[6147-53-1] C4H14CoO8 (MW 249.08) InChI = 1S/2C2H4O2.Co.4H2O/c2*1-2(3)4;;;;;/h2*1H3,(H,3,4);;4*1H2/q;;+2;;;;/p-2 InChIKey = ZBYYWKJVSFHYJL-UHFFFAOYSA-L (mediator of CC bond formations,1-5 functional group transformations,6, 7 oxidations,8-14 reductions and carbonylations15-17) Physical Data: loses 4H2O at 140 °C; d 1.705
Mariappan Periasamy, Maddali L. N. Rao, Shifa Zhu, X. Peter Zhang   +3 more
openaire   +1 more source

Cobalt(II)- and Nickel(II)-Substituted Proteins

2007
The sections in this article are 1 Introduction 2 The Electronic Properties of High Spin Cobalt(II) and Nickel(II) Ions 3 Metal Substitution and NMR Parameters 4 Cobalt(II)-Substituted Proteins 5 Nickel(II)-Substituted Proteins 6 Cobalt(II)- and Nickel(II)-Substitution in Magnetically Coupled Dimers 7 Conclusions 8 ...
BANCI, LUCIA, PICCIOLI, MARIO
openaire   +2 more sources

Cobalt(II)-8-mercaptoquinolines complexing in cobalt(II) hexacyanoferrate(II) gelatin-immobilized matrix materials

Transition Metal Chemistry, 2002
Complexing processes between CoII and 8-mercaptoquinoline, or its various alkyl- and aryl-substituted derivatives, in contact with Co2[Fe(CN)6]-gelatin-immobilized matrix materials, with aqueous solutions of corresponding ligands, have been studied.
Oleg V. Mikhailov, Vladimir F. Sopin
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

ChemInform Abstract: SOME TETRANUCLEAR NICKEL(II), COBALT(II), AND MIXED COBALT(II)/COBALT(III) COMPLEXES OF A BINUCLEATING LIGAND

Chemischer Informationsdienst, 1973
AbstractNickel(II)‐, Kobalt(II)‐ und Koba1t(II)/Kobalt(III)‐Komplexe mit dem Liganden 4‐Hydroxy‐bis‐3,5‐[N‐(2′‐hydroxyphenyl)‐formimidoyl]‐toluol werden dargestellt.
B. F. HOSKINS, R. ROBSON, D. VINCE
openaire   +1 more source