Structure of tetra(3,5-dinitrobenzoate) bis(Piperidine) hexaaquanickel(II)—[Ni(OH2)6](PipH)2(3,5-DNB)4·2H2O dihydrate

• Published in: Journal of structural chemistry Vol. 53; no. 1; pp. 189 - 192
• Main Authors: Miminoshvili, É. B., Miminoshvili, K. É., Sakvarelidze, T. N.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01-02-2012
• Subjects: Atomic; Atomic/Molecular Structure and Spectra; Brief Communications; Chemistry; Chemistry and Materials Science; Inorganic Chemistry; Molecular; Optical and Plasma Physics; Physical Chemistry; Solid State Physics; synthesis; dinitrobenzoate; piperidine; structural analysis; complex compounds; transition metals
• ISSN: 0022-4766; 1573-8779
• DOI: 10.1134/S002247661201026X

It is found that M(AmH)
2
(3,5-DNB)
4
·8H
2
O compounds (where M(II) = Co, Ni; AmH is piperidine PipH = (C
5
H
10
NH
2
)
+
or diethylamine DaH = (C
4
H
10
NH
2
)
+
cations; 3,5-DNB = (C
7
H
3
N
2
O
6
)
−
is the dinitrobenzoic acid anion) are isotypic. The structure of the Ni(PipH)
2
(3,5-DNB)
4
·8H
2
O single crystal is studied. The crystals have a monoclinic system,
P
2
1
/
n
space group,
Z
= 2,
a
= 6.7694(3) Å,
b
= 16.0746(6) Å,
c
= 23.1250(9) Å, β = 97.794(1)°,
V
= 2493.1(2) Å
3
,
T
= 153 K. The final value
R
(
F
) = 0.0407 was obtained for 8191 independent reflections with
I
> 2
σ
(
I
). The structural units of the compound studied are as follows: [Ni(OH
2
)
6
]
2+
complex hexaaquacation, two (PipH)
+
cations, four (3,5-DNB)
−
anions, and two molecules of water of crystallization with the structural formula [Ni(OH
2
)
6
](PipH)
2
(3,5-DNB)
4
·2H
2
O. Similar compounds of Ni(II) and Co(II) are isostructural.