Collected Item: “Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands”
Врста публикације
Рад у часопису
Верзија рада
објављена верзија
Језик рада
енглески
Аутор/и (Милан Марковић, Никола Николић)
Jelena Rogan, Dejan Poleti, Ljiljana Karanović, Zvonko Jagličić
Наслов рада (Наслов - поднаслов)
Synthesis, magnetic, thermal and structural properties of Co(II), Ni(II) and Cu(II) complexes containing isophthalato ligands
Наслов часописа
Journal of Molecular Structure
Издавач (Београд : Просвета)
Elsevier BV
Година издавања
2011
Сажетак на енглеском језику
A series of novel ternary Co(II), Ni(II) and Cu(II) complexes containing 2,20-dipyridylamine (dipya), 2,20-
bipyridine (bipy), and 1,10-phenanthroline (phen), as aromatic diamine ligands, and dianion of isophthalic acid (ipht) have been prepared by ligand exchange reactions from diluted H2O/EtOH solutions. The complexes were characterized by elemental analysis, IR spectroscopy, magnetic susceptibility measurements and TG and DSC analysis. Three complexes, Cu(dipya)(ipht)H2O (1), Co(dipya)(ipht)2H2O (2) and Cu(ipht)(phen)2H2O (5) are polymeric with bis-monodentate ipht, while the other two complexes M(bipy)(ipht)4H2O, M@Co(II) (3) and Ni(II) (4), contain ipht as a counter ion. All Co(II) and Ni(II) complexes are (pseudo)octahedral, while Cu(II) complexes have square-pyramidal or distorted octahedral geometry. The variable temperature magnetic susceptibility measurements showed very weak antiferromagnetic behaviour for all complexes. Dehydration processes, decomposition mechanisms and thermal stability of 1–5 are assumed. One complex from the above series, [Ni(bipy)(H2O)4](ipht) (4), and one additional complex, [Co(bipy)(ipht)]n (6), are obtained as single-crystals and their structures are determined from X-ray diffraction data. In both structures M(II) centers are in deformed octahedral environment and they are linked by hemi-ipht ligands (4) and two different bridging ipht ligands (6). Three-dimensional networks in 4 and 6 are governed by strong noncovalent interactions. The cations and ipht anions in 4 are connected by hydrogen bonds building double layers parallel to ab-plane that are further packed by π•••π interactions. In 6 double chains extending along b-axis are strengthened by interchain π•••π interactions constructing a three-dimensional framework.
bipyridine (bipy), and 1,10-phenanthroline (phen), as aromatic diamine ligands, and dianion of isophthalic acid (ipht) have been prepared by ligand exchange reactions from diluted H2O/EtOH solutions. The complexes were characterized by elemental analysis, IR spectroscopy, magnetic susceptibility measurements and TG and DSC analysis. Three complexes, Cu(dipya)(ipht)H2O (1), Co(dipya)(ipht)2H2O (2) and Cu(ipht)(phen)2H2O (5) are polymeric with bis-monodentate ipht, while the other two complexes M(bipy)(ipht)4H2O, M@Co(II) (3) and Ni(II) (4), contain ipht as a counter ion. All Co(II) and Ni(II) complexes are (pseudo)octahedral, while Cu(II) complexes have square-pyramidal or distorted octahedral geometry. The variable temperature magnetic susceptibility measurements showed very weak antiferromagnetic behaviour for all complexes. Dehydration processes, decomposition mechanisms and thermal stability of 1–5 are assumed. One complex from the above series, [Ni(bipy)(H2O)4](ipht) (4), and one additional complex, [Co(bipy)(ipht)]n (6), are obtained as single-crystals and their structures are determined from X-ray diffraction data. In both structures M(II) centers are in deformed octahedral environment and they are linked by hemi-ipht ligands (4) and two different bridging ipht ligands (6). Three-dimensional networks in 4 and 6 are governed by strong noncovalent interactions. The cations and ipht anions in 4 are connected by hydrogen bonds building double layers parallel to ab-plane that are further packed by π•••π interactions. In 6 double chains extending along b-axis are strengthened by interchain π•••π interactions constructing a three-dimensional framework.
Волумен/том или годиште часописа
985
Број часописа
2-3
Почетна страна
371
Завршна страна
379
DOI број
10.1016/j.molstruc.2010.11.024
ISSN број часописа
0022-2860
Кључне речи на српском (одвојене знаком ", ")
комплекси прелазних метала, карбоксилатни лиганди, N-лиганди, кристална структура, магнетна својства
Кључне речи на енглеском (одвојене знаком ", ")
transition metal complexes, carboxylate ligands, N ligands, crystal structure, magnetic properties
Линк
https://api.elsevier.com/content/article/PII:S0022286010008902?httpAccept=text/xml
Шира категорија рада према правилнику МПНТ
M20
Ужа категорија рада према правилнику МПНТ
М23
Пројект у склопу кога је настао рад
Министарство за науку и технолошки развој Републике Србије (пројекат бр. 142030)
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