Novel eight-coordinated Cd(II) complexes with two homologous pyridine alcohols : crystal structure, spectroscopic and thermal properties
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dc.type
JournalArticle
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dc.description.physical
97-104
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dc.abstract.en
Two novel cadmium(II) complexes with homologous pyridine alcohols: [Cd(2-MeOHPy)
2
(NO
3
)
2
](
1
) and
[Cd(2-EtOHPy)
2
(NO
3
)
2
](
2
) have been prepared and characterized by elemental analysis, X-ray crystallo-
graphic studies, spectroscopic (IR,
1
H and
13
C NMR) and thermal properties. IR, NMR and X-ray analysis
have confirmed a bidentate fashion of coordination of heteroaromatic alcohols with Cd(II) ions. 2-MeO-
HPy bound directly to the central ion by N, O-donor atoms giving five-membered chelate ring but 2-
EtOHPy formed less stable six-membered chelate ring. In the complex (
1
) and (
2
) bidentate nitrate
ligands are arranged in
cis
position for organic ligands. In both cases cadmium(II) ions are eight-coordi-
nated and shape of coordination polyhedral can be described as pseudo-dodecahedron (CdN
2
O
6
chromo-
phore type). The crystal packing of Cd(II) complexes are stabilized by intermolecular classical hydrogen
bonds of O
A
H
O and non-classical C
A
H
O type. In addition, there are
p
–
p
stacking interactions
between almost parallel-displaced pyridine rings of 2-hydroxymethylpyridine in the two neighbouring
complex (
1
) molecules but the hydrogen interactions in (
2
) are formed by C
A
H donor group of Py rings
and
p
-electron system of neighbouring one.
pl
dc.subject.en
cadmium(II) complexes
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dc.subject.en
2-hydroxyethylpyridine
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dc.subject.en
2-hydroxymethylpyridine
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dc.subject.en
X-ray data
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dc.subject.en
spectroscopic and thermal properties
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dc.description.volume
1012
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dc.description.points
20
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dc.identifier.doi
10.1016/j.molstruc.2011.12.052
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dc.identifier.eissn
1872-8014
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dc.title.journal
Journal of Molecular Structure
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dc.language.container
eng
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dc.affiliation
Wydział Chemii : Zakład Krystalochemii i Krystalofizyki