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):  
Author(s):  
Karilys González Nieves ◽  
Dalice M. Piñero Cruz

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.


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

1999 ◽  
Vol 52 (1) ◽  
pp. 51 ◽  
Author(s):  
Martin A. Bennett ◽  
Christopher J. Cobley ◽  
David C. R. Hockless ◽  
Thomas Klettke

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.


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

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