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sigmaaldrichImage: sigmaaldrichThe ethylenediaminecomplexesof nickelare quite stable in neutral and alkaline solutions, but they cannot exist in acidic solution. Part of the purple solution, as shown above, was added to some dilute sulphuric acid. When this is done, the complex is destroyed at once and a plain green solution, containing hydrated nickel(II) ions is obtained.
Nickel - ethylenediamine complexes
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Dichlorobis(ethylenediamine)nickel(II) - Wikipedia
Dichlorobis(ethylenediamine)nickel(II) is the inorganic compound with the formula Ni 2 Cl 4 (en) 4, where en = ethylenediamine. It is a salt of the coordination complex [Ni 2 Cl 2 (en) 4] 2+ with chloride counterions. This blue solid is soluble in water and polar organic solvents.Chemical formula: C₈H₃₂Cl₄N₈Ni₂Melting point: > (decomposes)Density: 1 g/cm³Molar mass: 499 g·mol−1
Nickel - ethylenediamine complexes
Nickel - ethylenediamine complexes. Ethylenediamine, NH 2 CH 2 CH 2 NH 2 is a well-known ligand for many transition metals. It is a bidentate ligand, capable of coordination on both nitrogen atoms. In this webpage, the different complexes with nickel(II) are demonstrated. One of the complexes is isolated in the form of the perchlorate salt.[PDF]
Analysis of Ni Complex Lab Worksheet - University of Idaho
Coordination complexes consist of a metal ion that is attached (bonded) to elements and/or other compounds called ligands. In this lab the ligands that will be attached to the nickel ion are: H2O, SO4 2-, and ethylenediamine (abbreviated “en”). Ethylenediamine is a weak base, with the formula H2N-CH2-CH2-NH2. For background on coordination complexes, you may want to consult Section 22.3[PDF]
Preparation and Analysis of a Complex Nickel Salt
Two Nickel-ethylenediamine complexes will be synthesize with the general formula, [Ni(en) x(H 2O) 6-2x]SO 4 • Y H 2O. The analysis of the two nickel salts consist of (1) determining the percent yield of the products and (2) the analysis of the “x” and “y” values in the formula in order to determine the the nickel and ethylenediamine content[PDF]
Experiment 5: SYNTHESIS OF
The ethylenediamine (en) molecule acts as the ligand in this reaction and because it bonds to the nickel ion in two different positions, it is called a chelating ligand. The word “chelate” has Greek and Latin origins referring to a claw-like or pincer action.[PDF]
Complexes of Nickel
2. Nickel salts and their solutions will irritate the eyes upon contact. Dust from solid nickel salts in harmful, and the compounds are assumed to be poisonous if ingested. Clean Up 1. Pour the waste into the waste bottle. a. If there is not a date on the waste bottle fill out the date. 2. Return the materials to the cart in the demonstration library room.
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