Ni Dmg 2 2+ Name
Names | |
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Systematic IUPAC name | |
Identifiers | |
3D model (JSmol) |
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ECHA InfoCard | 100.006.147 |
EC Number | |
PubChemCID | |
CompTox Dashboard(EPA) | |
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Properties | |
C4H6NiO4 | |
Molar mass | 176.781 g·mol−1 |
Appearance | Green Solid |
Odor | slight acetic acid |
Density | 1.798 g/cm3 (anhydrous) 1.744 g/cm3 (tetrahydrate) |
Melting point | decomposes when heated [1][2] |
Easily soluble in cold water, hot water | |
Solubility | Soluble in methanol insoluble in diethyl ether, n-octanol |
+4,690.0·10−6 cm3/mol | |
Structure | |
monoclinic | |
P21/c | |
α = 90°, β = 93.6°, γ = 90°[3] | |
Lattice volume (V) | 471.5 |
2 | |
distorted octahedral | |
Hazards | |
NFPA 704 (fire diamond) | |
Lethal dose or concentration (LD, LC): | |
350 mg/kg (rat, oral) 410 mg/kg (mouse, oral)[4] | |
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 |
Nickel(II) acetate is the name for the coordination compounds with the formula Ni(CH3CO2)2·x H2O where x can be 0, 2, and 4. The green tetrahydrate Ni(CH3CO2)2·4 H2O is most common. It is used for electroplating.
Ni(CN) 4 2-= Ni 2+ + 4CN-. In Ni(CN) 4 2-, there is Ni 2+ ion for which the electronic configuration in the valence shell is 3d 8 4s 0. In presence of strong field CN-ions, all the electrons are paired up. The empty 4d, 3s and two 4p orbitals undergo dsp 2 hybridization to.
Synthesis and structure[edit]
The compound can be prepared by treating nickel or nickel(II) carbonate with acetic acid:
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- NiCO3 + 2 CH3CO2H + 3 H2O → Ni(CH3CO2)2·4 H2O + CO2
The green tetrahydrate has been shown by X-ray crystallography to adopt an octahedral structure, the central nickel centre being coordinated by four water molecules and two acetate ligands.[5] It may be dehydrated in vacuo, by reaction with acetic anhydride,[6] or by heat.[7]
Safety[edit]
Nickel salts are carcinogenic and irritate the skin.
References[edit]
Ni Dmg 2 2+ Name Meaning
- ^M. A. Mohamed, S. A. Halawy, M. M. Ebrahim: 'Non-isothermal decomposition of nickel acetate tetrahydrate', in: Journal of Analytical and Applied Pyrolysis, 1993, 27 (2), S. 109–110. doi:10.1016/0165-2370(93)80002-H.
- ^G. A. M. Hussein, A. K. H. Nohman, K. M. A. Attyia: 'Characterization of the decomposition course of nickel acetate tetrahydrate in air', in: Journal of Thermal Analysis and Calorimetry, 1994, 42, S. 1155–1165; doi:10.1007/BF02546925.
- ^Downie, T. C.; Harrison, W.; Raper, E. S.; Hepworth, M. A. (15 March 1971). 'A three-dimensional study of the crystal structure of nickel acetate tetrahydrate'. Acta Crystallographica Section B. 27 (3): 706–712. doi:10.1107/S0567740871002802.
- ^'Nickel metal and other compounds (as Ni)'. Immediately Dangerous to Life and Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
- ^Van Niekerk, J. N.; Schoening, F. R. L. (1953). 'The crystal structures of nickel acetate, Ni(CH3COO)2·4H2O, and cobalt acetate, Co(CH3COO)2·4H2O'. Acta Crystallogr.6 (7): 609–612. doi:10.1107/S0365110X5300171X.
- ^Lascelles, Keith; Morgan, Lindsay G.; Nicholls, David; Beyersmann, Detmar (2005). 'Nickel Compounds'. Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a17_235.pub2.
- ^Tappmeyer, W. P.; Davidson, Arthur W. (1963). 'Cobalt and Nickel Acetates in Anhydrous Acetic Acid'. Inorg. Chem.2 (4): 823–825. doi:10.1021/ic50008a039.
AcOH | He | ||||||||||||||||
LiOAc | Be(OAc)2 BeAcOH | B(OAc)3 | AcOAc ROAc | NH4OAc | AcOOH | FAc | Ne | ||||||||||
NaOAc | Mg(OAc)2 | Al(OAc)3 ALSOL Al(OAc)2OH Al2SO4(OAc)4 | Si | P | S | ClAc | Ar | ||||||||||
KOAc | Ca(OAc)2 | Sc(OAc)3 | Ti(OAc)4 | VO(OAc)3 | Cr(OAc)2 Cr(OAc)3 | Mn(OAc)2 Mn(OAc)3 | Fe(OAc)2 Fe(OAc)3 | Co(OAc)2, Co(OAc)3 | Ni(OAc)2 | Cu(OAc)2 | Zn(OAc)2 | Ga(OAc)3 | Ge | As(OAc)3 | Se | BrAc | Kr |
RbOAc | Sr(OAc)2 | Y(OAc)3 | Zr(OAc)4 | Nb | Mo(OAc)2 | Tc | Ru(OAc)2 Ru(OAc)3 Ru(OAc)4 | Rh2(OAc)4 | Pd(OAc)2 | AgOAc | Cd(OAc)2 | In | Sn(OAc)2 Sn(OAc)4 | Sb(OAc)3 | Te | IAc | Xe |
CsOAc | Ba(OAc)2 | Hf | Ta | W | Re | Os | Ir | Pt(OAc)2 | Au | Hg2(OAc)2, Hg(OAc)2 | TlOAc Tl(OAc)3 | Pb(OAc)2 Pb(OAc)4 | Bi(OAc)3 | Po | At | Rn | |
Fr | Ra | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og | |
↓ | |||||||||||||||||
La(OAc)3 | Ce(OAc)x | Pr | Nd | Pm | Sm(OAc)3 | Eu(OAc)3 | Gd(OAc)3 | Tb | Dy(OAc)3 | Ho(OAc)3 | Er | Tm | Yb(OAc)3 | Lu(OAc)3 | |||
Ac | Th | Pa | UO2(OAc)2 | Np | Pu | Am | Cm | Bk | Cf | Es | Fm | Md | No | Lr |