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Syntheses and structural studies of the nickel(II) octahedral complexes Ni(N∩N)xL2 with nitrogen-containing and carboxylate ligands
A series of new mononuclear octahedral nickel(II) complexes with the Ni(N∩N) x L 2 framework ( x = 2 or 3, N∩N = Рhen (1,10-phenanthroline), AMPy (2-(aminomethyl)pyridine), L is H 2 O, anions of carboxylic acids (CF 3 CO 2 −, CCl 3 CO 2 −, HCO 2 −), chloride ion, and water) is synthesized and descri...
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| Published in: | Russian journal of coordination chemistry 2017-05, Vol.43 (5), p.269-277 |
|---|---|
| Main Authors: | , , , , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | A series of new mononuclear octahedral nickel(II) complexes with the Ni(N∩N)
x
L
2
framework (
x
= 2 or 3, N∩N = Рhen (1,10-phenanthroline), AMPy (2-(aminomethyl)pyridine), L is H
2
O, anions of carboxylic acids (CF
3
CO
2
−, CCl
3
CO
2
−, HCO
2
−), chloride ion, and water) is synthesized and described by IR spectroscopy, mass spectrometry, elemental analysis, and X-ray diffraction analysis: [Ni(Рhen)
2
(OH
2
)Cl]Cl · 2H
2
O (I), [Ni(Рhen)
2
(OH
2
)(O
2
CCF
3
)](O
2
CCF
3
) (
II, IIa
), [Ni(Рhen)
2
(HCOO)
1.618
(H
2
O)
0.382
](HCOO)
0.382
· 4.618H
2
O (
III
), ([Ni(Рhen)
2
(OH
2
)
2
](O
2
CCCl
3
)
2
· 6.2H
2
O (
IV
), [Ni(AMPy)
2
(OH
2
)
2
](HCO
2
)
2
· 6H
2
O (V), and [Ni(Рhen)
3
](CCl
3
COO)
2
· 7H
2
O (
VI
). The subunit containing two formate ligands in the inner sphere of the [Ni(Рhen)
2
(HCO
2
)
2
] complex prevails in the crystal structure of complex
III
, which is not characteristic of the nickel carboxylate complexes of this type. In aqueous solutions complex
IV
undergoes decarboxylation to form [Ni(Рhen)
2
(CO
3
)] · 7H
2
O. A change in the nature of the N-donor ligands in Ni(N∩N)
2
L
2
leads to the change (
cis
or
trans
) in the configuration of the whole complex (СIF files CCDC no. 880414 (
I
), 842336 (
II
), 1430414 (
IIa
), 1478111 (
III
), 1430430 (
IV
), 1443133 (
V
), and 1430415 (
VI
)). |
|---|---|
| ISSN: | 1070-3284 1608-3318 |
| DOI: | 10.1134/S1070328417050050 |