Nickel Compound | ScienceGate

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.

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

Journal of Structural Chemistry ◽

10.1007/bf00743891 ◽

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

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Two modifications of the diacidobis(ethylenediamine)nickel compound Nien2NO2NCS

Journal of Structural Chemistry ◽

10.1007/bf00743890 ◽

1965 ◽

Vol 6 (1) ◽

pp. 155-156 ◽

Cited By ~ 2

Author(s):

A. E. Shvelashvili ◽

M. A. Porai-Koshits ◽

A. S. Antsyshkina

Keyword(s):

Nickel Compound

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

Australian Journal of Chemistry ◽

10.1071/c98135 ◽

1999 ◽

Vol 52 (1) ◽

pp. 51 ◽

Cited By ~ 4

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.

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