Nickel Dmg Complex Structure
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| Names | |
|---|---|
| IUPAC name nickel;N-[(Z)-3-nitrosobut-2-en-2-yl]hydroxylamine | |
| Other names | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider | |
| EC Number | |
PubChemCID | |
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| Properties | |
| C8H14N4NiO4 | |
| Molar mass | 288.917 g·mol−1 |
| Appearance | red solid |
| Density | 1.698 g/cm3 |
| Hazards | |
| GHS pictograms | |
| GHS Signal word | Warning |
| H315, H317, H319, H335, H351 | |
| P201, P202, P261, P264, P271, P272, P280, P281, P302+352, P304+340, P305+351+338, P308+313, P312, P321, P332+313, P333+313, P337+313, P362, P363, P403+233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
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]
Experiment: Gravimetric Determination of Nickel The purpose of this experiment is to determine the% nickel (by weight) in an unknown nickel-containing ore by means of gravimetric methods. INTRODUCTION The separation of nickel from other ions in a sample is a good example of specificity in quantitative analysis. The structure of nickel dimethyl-glyoxime Ludwig Edward Godycki Iowa State College Follow this and additional works at:Part of thePhysical Chemistry Commons This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University. Complex involving oxine starts to decompose around 320°C and is converted finally to nickel oxide The three Ni(II) complexes were found to be diamagnetic and they were of pale rosy red colour. However, Ni(pipdtc)(DMG) complex was of light rosy green colour. How to open dmg file in macbook. These complexes were insoluble in common organic solvents. 2DMG(aq) + Ni2+(aq) - Ni(DMG)2(s) + 2H2O(l) Ni(DMG)2(s) is a red precipitate. As you can see nickel has not been oxidized, nickel is not oxidized as the Ni2+ ion only forms a complex. DMG has to be in an alcohol solution because It is the conjugate base, not dmgH2 itself, that forms the complexes.
Structure[edit]
Nickel(II) is square planar.[2] It is surrounded by two equivalents of the conjugate base (dmgH−) 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.
The use of dimethylglyoxime as a reagent to detect nickel was reported by L. A. Chugaev in 1905.[3]
References[edit]
Nickel Dmg Complex Structure List
- ^Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN978-0-08-037941-8.
- ^Donald E. Williams, Gabriele Wohlauer, R. E. Rundle (1959). 'Crystal Structures of Nickel and Palladium Dimethylglyoximes'. J. Am. Chem. Soc. 81: 755–756. doi:10.1021/ja01512a066.CS1 maint: uses authors parameter (link)
- ^Lev Tschugaeff (1905). 'Über ein neues, empfindliches Reagens auf Nickel'. Berichte der deutschen chemischen Gesellschaft. 38 (3): 2520–2522. doi:10.1002/cber.19050380317.