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(Redirected from Ni(dmgH)2)
DMG stands for Dimethylglyoxime. It forms a complex with Nickel which is insoluble and precipitates. Thus, determination of Ni and its quantification can be done by using DMG. DMG can also be used for determination of Bi and Pd. Gravimetric analys. NOTE: DMG is insoluble in water and is used as a 1% solution in ethanol. A slight excess of the reagent is needed to precipitate all the Ni 2+, but a large excess should be avoided because of the possible precipitation of the DMG (white precipitate) itself due to its low solubility in water.
- Mar 30, 2009 The decomposition of Ni(dmg) 2 directly to metallic nickel particles, under the present experimental conditions, makes the normally required reducing agents such as H 2 no longer necessary in the formation of phase-pure metallic nickel for catalyzing the CNTs formation.
- An alcoholic solution of dimethyglyoxime (DMG) is used as the precipitating reagent during the experiment because DMG is only slightly soluble in water (0.063 g in 100 mL at 25 C). It is therefore crucial to avoid the addition of too large an excess of the reagent because it.
- Balance the reaction of Ni + (Dmg) = Ni(Dmg)2 using this chemical equation balancer!
Names | |
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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]
Uses Of Ni Dmg 2 Structure
![Uses of ni dmg 2017 Uses of ni dmg 2017](/uploads/1/2/6/2/126237941/385693733.jpg)
Structure[edit]
Open Dmg 2 File
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]
Uses Of Ni Dmg 2 Pdf
- ^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)
- ^Tschugaeff, Lev (1905). 'Über ein neues, empfindliches Reagens auf Nickel' [About a new, sensitive reagent on nickel] (PDF). Berichte der deutschen chemischen Gesellschaft (in German). 38 (3): 2520–2522. doi:10.1002/cber.19050380317.
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