Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, volume 37, issue 5, pages 333-342
Regularities of the formation of binuclear homo- and heteroleptic complexes of d metals with 3,3′-bis(dipyrrolylmethenes) in DMF
Publication type: Journal Article
Publication date: 2011-05-24
Quartile SCImago
Q3
Quartile WOS
Q3
Impact factor: 1.9
ISSN: 10703284, 16083318
General Chemistry
General Chemical Engineering
Abstract
The reactions of seven symmetrically alkylated tetradentate ligands 3,3′-bis(dipyrrolylmethenes) (H2L) with d-metal acetates (M(AcO)2) in DMF solutions at 298.15 K were studied by spectrophotometry. Helicands H2L were found to be structurally preorganized to form stable binuclear homoleptic two-helix helicates [M2L2] with Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) acetates. The coordination of the ligands by the metal ions included consecutive stages of formation of the heteroleptic [M2L(AcO)2] and homoleptic [M2L2] complexes. The [M2L(AcO)2] complexes were spectrally revealed in solutions containing a ligand excess (c H 2 L / c M(AcO) 2 > 1). An increase in the salt concentration shifted the system of equilibria to the homoligand product [M2L2]. The thermodynamic constants of the reactions increased in the series of complexing agents: Cu(II) < Cd(II) < Hg(II) < Ni(II) < Co(II) < Zn(II). An analysis of the data on the thermodynamic constants of [M2L2] helicate formation in solutions and the earlier obtained results of the IR and 1H NMR studies of the hydrobromic salts of the ligands (H2L · 2HBr) showed that the key regularities of the influence of the structural factors on the coordination properties of the ligands were in an increase in the stability of the [M2L2] complexes with an increase in the basicity of the ligands.
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- We do not take into account publications that without a DOI.
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Dudina N. A., Antina E. V., Guseva G. B. Regularities of the formation of binuclear homo- and heteroleptic complexes of d metals with 3,3′-bis(dipyrrolylmethenes) in DMF // Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya. 2011. Vol. 37. No. 5. pp. 333-342.
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Dudina N. A., Antina E. V., Guseva G. B. Regularities of the formation of binuclear homo- and heteroleptic complexes of d metals with 3,3′-bis(dipyrrolylmethenes) in DMF // Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya. 2011. Vol. 37. No. 5. pp. 333-342.
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TY - JOUR
DO - 10.1134/S1070328411040026
UR - https://doi.org/10.1134%2FS1070328411040026
TI - Regularities of the formation of binuclear homo- and heteroleptic complexes of d metals with 3,3′-bis(dipyrrolylmethenes) in DMF
T2 - Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
AU - Dudina, N A
AU - Antina, E V
AU - Guseva, G B
PY - 2011
DA - 2011/05/24 00:00:00
PB - Pleiades Publishing
SP - 333-342
IS - 5
VL - 37
SN - 1070-3284
SN - 1608-3318
ER -
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@article{2011_Dudina,
author = {N A Dudina and E V Antina and G B Guseva},
title = {Regularities of the formation of binuclear homo- and heteroleptic complexes of d metals with 3,3′-bis(dipyrrolylmethenes) in DMF},
journal = {Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya},
year = {2011},
volume = {37},
publisher = {Pleiades Publishing},
month = {may},
url = {https://doi.org/10.1134%2FS1070328411040026},
number = {5},
pages = {333--342},
doi = {10.1134/S1070328411040026}
}
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Dudina, N. A., et al. “Regularities of the formation of binuclear homo- and heteroleptic complexes of d metals with 3,3′-bis(dipyrrolylmethenes) in DMF.” Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, vol. 37, no. 5, May. 2011, pp. 333-342. https://doi.org/10.1134%2FS1070328411040026.