A linear cobalt(II) complex with maximal orbital angular momentum from a non-Aufbau ground state

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10387075" target="_blank" >RIV/00216208:11320/18:10387075 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1126/science.aat7319" target="_blank" >https://doi.org/10.1126/science.aat7319</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1126/science.aat7319" target="_blank" >10.1126/science.aat7319</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A linear cobalt(II) complex with maximal orbital angular momentum from a non-Aufbau ground state

Popis výsledku v původním jazyce

Orbital angular momentum is a prerequisite for magnetic anisotropy, although in transition metal complexes it is typically quenched by the ligand field. By reducing the basicity of the carbon donor atoms in a pair of alkyl ligands, we synthesized a cobalt(II) dialkyl complex, Co(C(SiMe(2)ONaph)(3))(2) (where Me is methyl and Naph is a naphthyl group), wherein the ligand field is sufficiently weak that interelectron repulsion and spin-orbit coupling play a dominant role in determining the electronic ground state. Assignment of a non-Aufbau (d(x2-y2,)d(xy))(3)(d(xz), d(yz),)(3)(d(z2))(1) electron configuration is supported by dc magnetic susceptibility data, experimental charge density maps, and ab initio calculations. Variable-field far-infrared spectroscopy and ac magnetic susceptibility measurements further reveal slow magnetic relaxation via a 450-wave number magnetic excited state.

Název v anglickém jazyce

A linear cobalt(II) complex with maximal orbital angular momentum from a non-Aufbau ground state

Popis výsledku anglicky

Orbital angular momentum is a prerequisite for magnetic anisotropy, although in transition metal complexes it is typically quenched by the ligand field. By reducing the basicity of the carbon donor atoms in a pair of alkyl ligands, we synthesized a cobalt(II) dialkyl complex, Co(C(SiMe(2)ONaph)(3))(2) (where Me is methyl and Naph is a naphthyl group), wherein the ligand field is sufficiently weak that interelectron repulsion and spin-orbit coupling play a dominant role in determining the electronic ground state. Assignment of a non-Aufbau (d(x2-y2,)d(xy))(3)(d(xz), d(yz),)(3)(d(z2))(1) electron configuration is supported by dc magnetic susceptibility data, experimental charge density maps, and ab initio calculations. Variable-field far-infrared spectroscopy and ac magnetic susceptibility measurements further reveal slow magnetic relaxation via a 450-wave number magnetic excited state.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Science

ISSN

0036-8075

e-ISSN

—

Svazek periodika

362

Číslo periodika v rámci svazku

6421

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

000453845000052

EID výsledku v databázi Scopus

2-s2.0-85056786775