4f-intermediate valence in an ytterbium-bipyridine coordination solid

Evgeniia Luneva; Maja A. Dunstan; Frédéric Aribot; Nathan J. Yutronkie; Joseph E. McPeak; Andrei Rogalev; Grégory Nocton; Kasper S. Pedersen

doi:10.1039/d5cc04048e

4f-intermediate valence in an ytterbium-bipyridine coordination solid

Evgeniia Luneva
, Maja A. Dunstan
, Frédéric Aribot
, Nathan J. Yutronkie
, Joseph E. McPeak
, Andrei Rogalev
, Grégory Nocton
, Kasper S. Pedersen

Technical University of Denmark
European Synchrotron Radiation Facility
University of Copenhagen
CNRS

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

We report the first structurally characterised coordination solids based on decamethylytterbocene, using bipyridine linkers to form YbCp^*₂(bipy) and YbCp^*₂(Me2bipy). Analogous to their mononuclear cousins known for intermediate valence, spectroscopic evidence suggests that YbCp^*₂(bipy) features a multiconfigurational ground state, composed of a superposition of an open-shell ligand non-innocent 4f¹³(π*)¹ state and a closed-shell 4f¹⁴ state. Our findings mark a first step toward increasing electronic correlations in lanthanide-organic frameworks, with the aim of realising materials with coexisting electronic transport and emergent magnetic properties.

langue originale	Anglais
Pages (de - à)	14999-15002
Nombre de pages	4
journal	Chemical Communications
Volume	61
Numéro de publication	77
Les DOIs	https://doi.org/10.1039/d5cc04048e
état	Publié - 23 sept. 2025
Modification externe	Oui

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10.1039/d5cc04048e

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title = "4f-intermediate valence in an ytterbium-bipyridine coordination solid",

abstract = "We report the first structurally characterised coordination solids based on decamethylytterbocene, using bipyridine linkers to form YbCp*2(bipy) and YbCp*2(Me2bipy). Analogous to their mononuclear cousins known for intermediate valence, spectroscopic evidence suggests that YbCp*2(bipy) features a multiconfigurational ground state, composed of a superposition of an open-shell ligand non-innocent 4f13(π*)1 state and a closed-shell 4f14 state. Our findings mark a first step toward increasing electronic correlations in lanthanide-organic frameworks, with the aim of realising materials with coexisting electronic transport and emergent magnetic properties.",

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doi = "10.1039/d5cc04048e",

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TY - JOUR

T1 - 4f-intermediate valence in an ytterbium-bipyridine coordination solid

AU - Luneva, Evgeniia

AU - Dunstan, Maja A.

AU - Aribot, Frédéric

AU - Yutronkie, Nathan J.

AU - McPeak, Joseph E.

AU - Rogalev, Andrei

AU - Nocton, Grégory

AU - Pedersen, Kasper S.

PY - 2025/9/23

Y1 - 2025/9/23

N2 - We report the first structurally characterised coordination solids based on decamethylytterbocene, using bipyridine linkers to form YbCp*2(bipy) and YbCp*2(Me2bipy). Analogous to their mononuclear cousins known for intermediate valence, spectroscopic evidence suggests that YbCp*2(bipy) features a multiconfigurational ground state, composed of a superposition of an open-shell ligand non-innocent 4f13(π*)1 state and a closed-shell 4f14 state. Our findings mark a first step toward increasing electronic correlations in lanthanide-organic frameworks, with the aim of realising materials with coexisting electronic transport and emergent magnetic properties.

AB - We report the first structurally characterised coordination solids based on decamethylytterbocene, using bipyridine linkers to form YbCp*2(bipy) and YbCp*2(Me2bipy). Analogous to their mononuclear cousins known for intermediate valence, spectroscopic evidence suggests that YbCp*2(bipy) features a multiconfigurational ground state, composed of a superposition of an open-shell ligand non-innocent 4f13(π*)1 state and a closed-shell 4f14 state. Our findings mark a first step toward increasing electronic correlations in lanthanide-organic frameworks, with the aim of realising materials with coexisting electronic transport and emergent magnetic properties.

UR - https://www.scopus.com/pages/publications/105016829763

U2 - 10.1039/d5cc04048e

DO - 10.1039/d5cc04048e

M3 - Article

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AN - SCOPUS:105016829763

SN - 1359-7345

VL - 61

SP - 14999

EP - 15002

JO - Chemical Communications

JF - Chemical Communications

IS - 77

ER -

4f-intermediate valence in an ytterbium-bipyridine coordination solid

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