But since Ni is in +2 oxidation state in the complex, the electronic configuration would be Ar 3d8 4s0. Now, dmg is a strong field ligand which causes the two unpaired electrons to get paired up. Thus there will be 4 pairs of electrons plus an empty d orbital in 3d. The dmg ligand is a bidentate ligand. Reaction favors the formation of the nickel(II) ion, causing the dissolution of Ni(DMG)2 back into the mother liquor. Mac os 10.9 virtualbox image download. Adding tartarate or citrate ions before the precipitation of the red nickel complex prevents interference from Cr, Fe and other metals. These anions selectively form tightly bound soluble. If the pH does become too low the equilibrium of the above reaction favors the formation of the nickel (II) ion, causing the dissolution of Ni (DMG) 2 back into the mother liquor. Dmg america icon. A slight excess of the reagent has no action on the precipitate, but a large excess should be avoided because of the possible precipitation of the reagent itself.
Ni Dmg 2 Complex
(Redirected from Ni(dmgH)2)
![]()
Nickel bis(dimethylglyoximate) is the coordination complex with the formula Ni[ONC(CH3)C(CH3)NOH]2. The compound is a bright red solid. It achieved prominence for its use in the qualitative analysis of nickel.[1]
Structure[edit]
Microsoft publisher download mac. Nickel(II) is square planar.[2] It is surrounded by two equivalents of the conjugate base (dmgHâ) of dimethylglyoxime (dmgH2). The pair of organic ligands are joined through hydrogen bonds to give a macrocyclic ligand. The complex is distinctively colored and insoluble leading to its use as a chelating agent in the gravimetric analysis of nickel.
Ni(dmg)2 Name
The use of dimethylglyoxime as a reagent to detect nickel was reported by L. A. Chugaev in 1905.[3]
References[edit]
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Nickel_bis(dimethylglyoximate)&oldid=879626005'
Comments are closed.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |