Nickel Dmg Structure

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.

Night in the woods mac download. Home seems different now and her friends have grown and changed. But things aren’t the same.

  • Structure of nickel dmg? Why is Ni(DMG)2 not an oxidising agent, although it has EAN=34? What are the uses of a nickel DMG complex? What is the spin state of a hexammine nickel II complex ion? What is the oxidation state of nickel dimethylglyoxime? What is the shape of Cu(CN)42-?
  • Nickel sulfides consist of NiS 2, which has a pyrite structure, and Ni 3 S 4, which has a spinel structure. All the nickel dihalides are known to exist. These compounds are usually yellow to dark brown in colour. Preparation directly from the elements is possible for all except NiF 2, which is best prepared from reaction of F 2 on NiCl 2 at 350°C.
Nickel bis(dimethylglyoximate)
Names
IUPAC name
nickel;N-[(Z)-3-nitrosobut-2-en-2-yl]hydroxylamine
Other names
Identifiers
3D model (JSmol)
ChemSpider
EC Number
PubChemCID
  • InChI=1S/2C4H8N2O2.Ni/c2*1-3(5-7)4(2)6-8;/h2*5,7H,1-2H3;/b2*4-3-;
  • CC(=C(C)N=O)NO.CC(=C(C)N=O)NO.[Ni]
Properties
C8H14N4NiO4
Molar mass288.917 g·mol−1
Appearancered solid
Density1.698 g/cm3
Hazards
GHS pictograms
GHS Signal wordWarning
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]

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

  1. ^Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN978-0-08-037941-8.
  2. ^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)
  3. ^Lev Tschugaeff (1905). 'Über ein neues, empfindliches Reagens auf Nickel'. Berichte der deutschen chemischen Gesellschaft. 38 (3): 2520–2522. doi:10.1002/cber.19050380317.
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Nickel_bis(dimethylglyoximate)&oldid=879626005'
Dimethylglyoxime
Names
IUPAC name
Other names
  • Dimethylglyoxime
  • Diacetyl dioxime
  • Butane-2,3-dioxime
  • Chugaev's reagent
Identifiers
  • 95-45-4
ChEMBL
ChemSpider
  • 10606175
ECHA InfoCard100.002.201
EC Number
PubChemCID
RTECS number
  • EK2975000
UNII
  • InChI=1S/C4H8N2O2/c1-3(5-7)4(2)6-8/h7-8H,1-2H3/b5-3-,6-4+
  • InChI=1/C4H8N2O2/c1-3(5-7)4(2)6-8/h7-8H,1-2H3/b5-3-,6-4+
  • CC(=NO)C(C)=NO
Properties
C4H8N2O2
Molar mass116.120 g·mol−1
AppearanceWhite/Off White Powder
Density1.37 g/cm3
Melting point 240 to 241 °C (464 to 466 °F; 513 to 514 K)
Boiling pointdecomposes
low
Structure
0
Hazards
Main hazardsToxic, Skin/Eye Irritant
Safety data sheetExternal MSDS
GHS pictograms
GHS Signal wordDanger
H228, H301
P210, P240, P241, P264, P270, P280, P301+310, P321, P330, P370+378, P405, P501
NFPA 704 (fire diamond)
Related compounds
Hydroxylamine
salicylaldoxime
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
verify (what is ?)
Infobox references

Dimethylglyoxime is a chemical compound described by the formula CH3C(NOH)C(NOH)CH3. Its abbreviation is dmgH2 for neutral form, and dmgH for anionic form, where H stands for hydrogen. This colourless solid is the dioxime derivative of the diketone butane-2,3-dione (also known as diacetyl). DmgH2 is used in the analysis of palladium or nickel. Its coordination complexes are of theoretical interest as models for enzymes and as catalysts. Many related ligands can be prepared from other diketones, e.g. benzil.

Preparation[edit]

Dimethylglyoxime can be prepared from butanone first by reaction with ethyl nitrite to give biacetyl monoxime. The second oxime is installed using sodium hydroxylamine monosulfonate:[1]

Complexes[edit]

Dimethylglyoxime is used to detect and quantify nickel, which forms the bright red complex nickel bis(dimethylglyoximate) (Ni(dmgH)2). The reaction was discovered by L. A. Chugaev in 1905.[2]

Cobalt complexes have also received much attention. In chloro(pyridine)cobaloxime[3] the macrocycle [dmgH]22− mimics the macrocyclic ligand found in vitamin B12.

Structure of chloro(pyridine)cobaloxime.

References[edit]

Nickel Dmg Structure List

  1. ^Semon, W. L.; Damerell, V. R. (1930). 'Dimethylglyoxime'. Organic Syntheses. 10: 22. doi:10.15227/orgsyn.010.0022.CS1 maint: multiple names: authors list (link)
  2. ^Lev Tschugaeff (1905). 'Über ein neues, empfindliches Reagens auf Nickel'. Berichte der Deutschen Chemischen Gesellschaft. 38 (3): 2520–2522. doi:10.1002/cber.19050380317.
  3. ^Girolami, G. S.; Rauchfuss, T.B.; Angelici, R. J. (1999). Synthesis and Technique in Inorganic Chemistry: A Laboratory Manual (3rd ed.). pp. 213–215.

Nickel Dmg Structure Crossword

Retrieved from 'https://en.wikipedia.org/w/index.php?title=Dimethylglyoxime&oldid=922963518'