Structure and Magnetism of Seven-Coordinate Fe-III, Fe-II, Co-II and Ni-II Complexes Containing a Heptadentate 15-Membered Pyridine-Based Macrocyclic Ligand

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73591061" target="_blank" >RIV/61989592:15310/18:73591061 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/ejic.201800769" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/ejic.201800769</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ejic.201800769" target="_blank" >10.1002/ejic.201800769</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structure and Magnetism of Seven-Coordinate Fe-III, Fe-II, Co-II and Ni-II Complexes Containing a Heptadentate 15-Membered Pyridine-Based Macrocyclic Ligand

Popis výsledku v původním jazyce

A heptadentate macrocyclic ligand, H2L (3,12,18-triaza-6,9-dioxabicyclo[12.3.1]octadeca-1,14,16-triene-3,12-diacetic acid) with two acetate pendant arms, and its complexes [(FeL)-L-III]ClO4 (1), [(FeL)-L-II]H2O (2), [(CoL)-L-II]H2O (3), and [(NiL)-L-II]H2O (4) were synthesized. The complexes possess an axially compressed pentagonal bipyramidal geometry with the coordination numbers of 7 for 2 and 3, and 6 + 1 for 4. The magnetic susceptibility measurements revealed magnetic anisotropy for compounds 1-4 expressed by axial zero-field splitting (ZFS) parameters (D = -1.3 cm(-1) for 1, -9.6 cm(-1) for 2, 29.1 cm(-1) for 3, and -8.5 cm(-1) for 4), with a rhombic ZFS (E/D = 0, 0.006, 0, and 0.193, respectively). Field-induced slow relaxation of magnetization was observed for the Co-II complex 3 only. The structural and magnetic features of 1-4 were compared with those of similar complexes containing ligand with two 2-pyridylmethyl pendant arms. Magnetic features of the complexes were also evaluated using theoretical calculations (DFT, CASSCF/NEVPT2).

Název v anglickém jazyce

Structure and Magnetism of Seven-Coordinate Fe-III, Fe-II, Co-II and Ni-II Complexes Containing a Heptadentate 15-Membered Pyridine-Based Macrocyclic Ligand

Popis výsledku anglicky

A heptadentate macrocyclic ligand, H2L (3,12,18-triaza-6,9-dioxabicyclo[12.3.1]octadeca-1,14,16-triene-3,12-diacetic acid) with two acetate pendant arms, and its complexes [(FeL)-L-III]ClO4 (1), [(FeL)-L-II]H2O (2), [(CoL)-L-II]H2O (3), and [(NiL)-L-II]H2O (4) were synthesized. The complexes possess an axially compressed pentagonal bipyramidal geometry with the coordination numbers of 7 for 2 and 3, and 6 + 1 for 4. The magnetic susceptibility measurements revealed magnetic anisotropy for compounds 1-4 expressed by axial zero-field splitting (ZFS) parameters (D = -1.3 cm(-1) for 1, -9.6 cm(-1) for 2, 29.1 cm(-1) for 3, and -8.5 cm(-1) for 4), with a rhombic ZFS (E/D = 0, 0.006, 0, and 0.193, respectively). Field-induced slow relaxation of magnetization was observed for the Co-II complex 3 only. The structural and magnetic features of 1-4 were compared with those of similar complexes containing ligand with two 2-pyridylmethyl pendant arms. Magnetic features of the complexes were also evaluated using theoretical calculations (DFT, CASSCF/NEVPT2).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY

ISSN

1434-1948

e-ISSN

—

Svazek periodika

2018

Číslo periodika v rámci svazku

38

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

4286-4297

Kód UT WoS článku

000447549800010

EID výsledku v databázi Scopus

2-s2.0-85054601576