2-Formylphenoxyacetic acid Schiff bases: a promising ligand scaffold for readily available trigonal prismatic Co(II) single-ion magnets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73622209" target="_blank" >RIV/61989592:15310/23:73622209 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2023/qi/d3qi01691a" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2023/qi/d3qi01691a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d3qi01691a" target="_blank" >10.1039/d3qi01691a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

2-Formylphenoxyacetic acid Schiff bases: a promising ligand scaffold for readily available trigonal prismatic Co(II) single-ion magnets

Popis výsledku v původním jazyce

This article presents a series of six mononuclear Co(II) complexes 1-6 featuring ligands derived from a hexadentate Schiff base family, originating from the condensation of (2-formylphenoxy)acetic acid with various diamines. Notably, these complexes uniquely prefer a trigonal prism geometry, presenting a novel approach to synthesizing complexes with this distinctive shape. The compounds were characterized by elemental analysis, FT-IR spectroscopy, and single-crystal and powder XRD techniques. Furthermore, the magnetism was investigated by DC and AC magnetic measurements and also complemented by X-band EPR spectroscopy. The results reveal that the prepared complexes behave as field-induced single-molecule magnets, characterized by a substantial negative axial zero-field splitting D-parameter and spin reversal energetic barrier U-eff reaching values up to 72 K. The theoretical methods based on CASSCF/NEVPT2 calculations were applied to rationalize their magnetic properties. Moreover, these complexes hold promising potential for further functionalization, offering opportunities to enhance their properties, particularly towards developing zero-field single-molecule magnets as evidenced by the slow relaxation of magnetization in zero static magnetic field observed for the zinc-diluted complex 1Zn.

Název v anglickém jazyce

2-Formylphenoxyacetic acid Schiff bases: a promising ligand scaffold for readily available trigonal prismatic Co(II) single-ion magnets

Popis výsledku anglicky

This article presents a series of six mononuclear Co(II) complexes 1-6 featuring ligands derived from a hexadentate Schiff base family, originating from the condensation of (2-formylphenoxy)acetic acid with various diamines. Notably, these complexes uniquely prefer a trigonal prism geometry, presenting a novel approach to synthesizing complexes with this distinctive shape. The compounds were characterized by elemental analysis, FT-IR spectroscopy, and single-crystal and powder XRD techniques. Furthermore, the magnetism was investigated by DC and AC magnetic measurements and also complemented by X-band EPR spectroscopy. The results reveal that the prepared complexes behave as field-induced single-molecule magnets, characterized by a substantial negative axial zero-field splitting D-parameter and spin reversal energetic barrier U-eff reaching values up to 72 K. The theoretical methods based on CASSCF/NEVPT2 calculations were applied to rationalize their magnetic properties. Moreover, these complexes hold promising potential for further functionalization, offering opportunities to enhance their properties, particularly towards developing zero-field single-molecule magnets as evidenced by the slow relaxation of magnetization in zero static magnetic field observed for the zinc-diluted complex 1Zn.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Inorganic Chemistry Frontiers

ISSN

2052-1545

e-ISSN

2052-1553

Svazek periodika

10

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

14

Strana od-do

7319-7332

Kód UT WoS článku

001101380600001

EID výsledku v databázi Scopus

2-s2.0-85176775748