Two modifications of the diacidobis(ethylenediamine)nickel compound Nien2NO2NCS

1965 ◽  
Vol 6 (1) ◽  
pp. 155-156 ◽  
Author(s):  
A. E. Shvelashvili ◽  
M. A. Porai-Koshits ◽  
A. S. Antsyshkina
Keyword(s):  
Nickel Compound

scholarly journals Crystal structure of a nickel compound comprising two nickel(II) complexes with different ligand environments: [Ni(tren)(H2O)2][Ni(H2O)6](SO4)2

2020 ◽  
Vol 76 (3) ◽  
pp. 314-317
Author(s):  
Karilys González Nieves ◽  
Dalice M. Piñero Cruz
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Molar Ratio ◽  
Water Molecules ◽  
Nickel Compound ◽  
Counter Anion ◽  
Cationic Complex ◽  
Coordinated Water ◽  
Co Precipitation ◽  
Metal Ligand

The title compound, diaqua[tris(2-aminoethyl)amine]nickel(II) hexaaquanickel(II) bis(sulfate), [Ni(C6H18N4)(H2O)2][Ni(H2O)6](SO4)2 or [Ni(tren)(H2O)2][Ni(H2O)6](SO4)2, consists of two octahedral nickel complexes within the same unit cell. These metal complexes are formed from the reaction of [Ni(H2O)6](SO4) and the ligand tris(2-aminoethyl)amine (tren). The crystals of the title compound are purple, different from those of the starting complex [Ni(H2O)6](SO4), which are turquoise. The reaction was performed both in a 1:1 and 1:2 metal–ligand molar ratio, always yielding the co-precipitation of the two types of crystals. The asymmetric unit of the title compound, which crystallizes in the space group Pnma, consists of two half NiII complexes and a sulfate counter-anion. The mononuclear cationic complex [Ni(tren)(H2O)2]2+ comprises an Ni ion, the tren ligand and two water molecules, while the mononuclear complex [Ni(H2O)6]2+ consists of another Ni ion surrounded by six coordinated water molecules. The [Ni(tren)(H2O)2] and [Ni(H2O)6] subunits are connected to the SO4 2− counter-anions through hydrogen bonding, thus consolidating the crystal structure.

The cis-octahedral structure of the diacidobis(ethylenediamine)nickel compound Nien2NCSCl and Nien2NCSBr

1965 ◽  
Vol 6 (1) ◽  
pp. 157-158
Author(s):  
A. E. Shvelashvili ◽  
M. A. Porai-Koshits ◽  
A. S. Antsyshkina
Keyword(s):  
Nickel Compound ◽  
Octahedral Structure

Mononuclear and Binuclear Complexes of Platinum(0) Containing (Alkynyl)phenylsilanes

1999 ◽  
Vol 52 (1) ◽  
pp. 51 ◽  
Author(s):  
Martin A. Bennett ◽  
Christopher J. Cobley ◽  
David C. R. Hockless ◽  
Thomas Klettke
Keyword(s):  
Spectroscopic Data ◽  
Chair Conformation ◽  
Membered Ring ◽  
Binuclear Complexes ◽  
Nickel Compound ◽  
X Ray ◽  
X Ray Crystallography

Reaction of bis(cycloocta-1,5-diene)platinum(0) with the (alkynyl)phenylsilanes Ph3SiC2But, Ph2Si(C2But)2 and PhSi(C2But)3 gives, respectively, [Pt (Ph3SiC2But)2] (1b), [Pt {Ph2Si(C2But)}]2 (2b), and [Pt {PhSi(C2But)3}]2 (4b), which contain zerovalent platinum atoms coordinated by two alkyne units. Spectroscopic data indicate that (2b) and (4b) contain two PtC4 and two SiC4 tetrahedra joined at the corners. X-Ray crystallography shows that complex (4b) is isostructural and isomorphous with the known nickel analogue, two of the alkyne units being uncoordinated; the central eight-membered ring comprising two silicon, four alkyne carbon and two platinum atoms has an approximate chair conformation. In contrast, the monomer (1b) is isostructural but not isomorphous with the analogous nickel compound (1a); in the crystal there is evidence for a weak intramolecular phenyl-phenyl interaction.

Ni 2 P/Al 2 O 3 hydrodesulfurization catalysts prepared by separating the nickel compound and hypophosphite

2017 ◽  
Vol 292 ◽  
pp. 133-142 ◽  
Author(s):  
Dapeng Liu ◽  
Anjie Wang ◽  
Chenguang Liu ◽  
Roel Prins
Keyword(s):  
Nickel Compound ◽  
Hydrodesulfurization Catalysts

scholarly journals Two good metals make a semiconductor: A potassium-nickel compound under pressure

2020 ◽  
Vol 102 (13) ◽  
Author(s):  
Adebayo A. Adeleke ◽  
Elissaios Stavrou ◽  
Adebayo O. Adeniyi ◽  
Biao Wan ◽  
Huiyang Gou ◽  
...  
Keyword(s):  
Nickel Compound
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