| Title: |
Assisted Self‐Assembly to Target Heterometallic Mn‐Nd and Mn‐Sm SMMs: Synthesis and Magnetic Characterisation of [Mn 7 Ln 3 (O) 4 (OH) 4 (mdea) 3 (piv) 9 (NO 3 ) 3 ] (Ln=Nd, Sm, Eu, Gd)** |
| Authors: |
Kaemmerer, Hagen; Mereacre, Valeriu; Ako, Ayuk; Mameri, Samir; Anson, Christopher; Clérac, Rodolphe; Powell, Annie |
| Contributors: |
Karlsruher Institut für Technologie (KIT); Université de Strasbourg (UNISTRA); Centre de Recherche Paul Pascal (CRPP); Université de Bordeaux (UB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Source: |
ISSN: 0947-6539. |
| Publisher Information: |
HAL CCSD; Wiley-VCH Verlag |
| Publication Year: |
2021 |
| Collection: |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
| Subject Terms: |
Manganese; Lanthanides; Assisted self-assembly; Single-molecule magnets; Cooperativity; [CHIM.MATE]Chemical Sciences/Material chemistry; [CHIM.COOR]Chemical Sciences/Coordination chemistry |
| Description: |
International audience ; In an assisted self-assembly approach starting from the [Mn 6 O 2 (piv) 10 (4-Me-py) 2 (pivH) 2 ] cluster a family of Mn Ln compounds (Ln = Pr Yb) was synthesised. The reaction of [Mn 6 O 2 (piv) 10 (4-Me-py) 2 (pivH) 2 ] (1) with N-methyldiethanolamine (mdeaH 2) and Ln(NO 3) 3 • 6H 2 O in MeCN generally yields two main structure types: for Ln = Tb Yb a previously reported Mn 5 Ln 4 motif is obtained, whereas for Ln = Pr Eu a series of Mn 7 Ln 3 clusters is obtained. Within this series the Gd III analogue represents a special case because it shows both structural types as well as a third Mn 2 Ln 2 inverse butterfly motif. Variation in reaction conditions allows access to different structure types across the whole series. This prompts further studies into the reaction mechanism of this cluster assisted self-assembly approach. For the Mn 7 Ln 3 analogues reported here variable-temperature magnetic susceptibility measurements suggest that antiferromagnetic interactions between the spin carriers are dominant. Compounds incorporating Ln = Nd III (2), Sm III (3) and Gd III (5) display SMM behaviour. The slow relaxation of the magnetisation for these compounds was confirmed by ac measurements above 1.8 K. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
hal-03423483; https://hal.archives-ouvertes.fr/hal-03423483; https://hal.archives-ouvertes.fr/hal-03423483/document; https://hal.archives-ouvertes.fr/hal-03423483/file/21,%20chemistry%2023%20hal.pdf |
| DOI: |
10.1002/chem.202102912 |
| Availability: |
https://hal.archives-ouvertes.fr/hal-03423483; https://hal.archives-ouvertes.fr/hal-03423483/document; https://hal.archives-ouvertes.fr/hal-03423483/file/21,%20chemistry%2023%20hal.pdf; https://doi.org/10.1002/chem.202102912 |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.B392621F |
| Database: |
BASE |