Ferromagnetically coupled tetranuclear Ni(<sc>ii</sc>)-2-oxy-aceto- or benzo-phenonate complexes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00617356" target="_blank" >RIV/68081723:_____/25:00617356 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2025/ra/d4ra08700c" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2025/ra/d4ra08700c</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4ra08700c" target="_blank" >10.1039/d4ra08700c</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ferromagnetically coupled tetranuclear Ni(<sc>ii</sc>)-2-oxy-aceto- or benzo-phenonate complexes

Popis výsledku v původním jazyce

Reaction of 2-hydroxy-acetophenone (HL) or 2-hydroxy-benzophenone (HL ') with nickel(ii) acetate provides the tetrakis-[(mu 3-methanolato-kappa 3O:O:O)(methanol-kappa O)(2-oxyacetophenone-kappa 2O,O ')nickel(ii)], [Ni(L)(mu 3-CH3O)(CH3OH)]4 (1) or tetrakis-[(mu 3-methanolato-kappa 3O:O:O)(aqua-kappa O)(2-oxybenzophenone-kappa 2O,O ')nickel(ii)] monohydrate, [Ni(L ')(mu 3-CH3O)(H2O)]4<middle dot>H2O (2). Molecular structure determination demonstrates each nickel(ii) ion is six-coordinate with a distorted octahedral geometry defined by three oxygen atoms from three methoxide fragments, a methanol (1) or water (2) molecule, and two oxygen atoms from the acetophenonate (L-) or benzophenonate (L '-) ligand, such that the four nickel atoms and four methoxide groups represent a cubane-type structural topology with each methoxide fragment bridging three of the metal centers. Stabilization of the cubane core occurs via intramolecular O-H & ctdot, O hydrogen bonds. Solid-state magnetic measurements along with computational modeling confirm dominant ferromagnetic interactions for the compounds, attributed to their cubane topology and the Ni-O-Ni angles adopting values lower than 100 degrees. Thermogravimetric analysis (TGA) suggests thermal decomposition of the complexes with successive release of the lattice water, coordinated solvents (MeOH or H2O), OCH3 groups and fragmented ligand species, supported by differential scanning calorimetry (DSC) studies. Cyclic voltammetry reveals a quasi-reversible two electrons charge transfer process in N,N-dimethylformamide.

Název v anglickém jazyce

Ferromagnetically coupled tetranuclear Ni(<sc>ii</sc>)-2-oxy-aceto- or benzo-phenonate complexes

Popis výsledku anglicky

Reaction of 2-hydroxy-acetophenone (HL) or 2-hydroxy-benzophenone (HL ') with nickel(ii) acetate provides the tetrakis-[(mu 3-methanolato-kappa 3O:O:O)(methanol-kappa O)(2-oxyacetophenone-kappa 2O,O ')nickel(ii)], [Ni(L)(mu 3-CH3O)(CH3OH)]4 (1) or tetrakis-[(mu 3-methanolato-kappa 3O:O:O)(aqua-kappa O)(2-oxybenzophenone-kappa 2O,O ')nickel(ii)] monohydrate, [Ni(L ')(mu 3-CH3O)(H2O)]4<middle dot>H2O (2). Molecular structure determination demonstrates each nickel(ii) ion is six-coordinate with a distorted octahedral geometry defined by three oxygen atoms from three methoxide fragments, a methanol (1) or water (2) molecule, and two oxygen atoms from the acetophenonate (L-) or benzophenonate (L '-) ligand, such that the four nickel atoms and four methoxide groups represent a cubane-type structural topology with each methoxide fragment bridging three of the metal centers. Stabilization of the cubane core occurs via intramolecular O-H & ctdot, O hydrogen bonds. Solid-state magnetic measurements along with computational modeling confirm dominant ferromagnetic interactions for the compounds, attributed to their cubane topology and the Ni-O-Ni angles adopting values lower than 100 degrees. Thermogravimetric analysis (TGA) suggests thermal decomposition of the complexes with successive release of the lattice water, coordinated solvents (MeOH or H2O), OCH3 groups and fragmented ligand species, supported by differential scanning calorimetry (DSC) studies. Cyclic voltammetry reveals a quasi-reversible two electrons charge transfer process in N,N-dimethylformamide.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

RSC Advances

ISSN

2046-2069

e-ISSN

2046-2069

Svazek periodika

15

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

4250-4261

Kód UT WoS článku

001415328300001

EID výsledku v databázi Scopus

2-s2.0-85219438578