6533b823fe1ef96bd127f666
RESEARCH PRODUCT
Rare‐earth cyclobutadienyl sandwich complexes: Synthesis, structure and dynamic magnetic properties
Akseli MansikkamäkiFu-sheng GuoAkira SekiguchiBenjamin M. DayBenjamin M. DayRichard A. LayfieldSean Giblinsubject
magneettiset ominaisuudetcyclobutadienyl ligandsmagneetitchemistry.chemical_element010402 general chemistry01 natural sciencesCatalysisDeprotonationAnisotropyta116magnetsAlkylQuantum tunnellingchemistry.chemical_classificationkemiallinen synteesiorganometallics dysprosium010405 organic chemistryLigandOrganic ChemistrykompleksiyhdisteetGeneral Chemistryharvinaiset maametallitMagnetic hysteresis0104 chemical sciencesCrystallographychemistryMagnetDysprosiumsingle-moleculerare-earth elementsdescription
The potassium cyclobutadienyl [K2{η4‐C4(SiMe3)4}] (1) reacts with MCl3(THF)3.5 (M=Y, Dy) to give the first rare‐earth cyclobutadienyl complexes, that is, the complex anions [M{η4‐C4(SiMe3)4}{η4‐C4(SiMe3)3‐κ‐(CH2SiMe2}]2−, (2M), as their dipotassium salts. The tuck‐in alkyl ligand in 2M is thought to form through deprotonation of the “squarocene” complexes [M{η4‐C4(SiMe3)4}2]− by 1. Complex 2Dy is a single‐molecule magnet, but with prominent quantum tunneling. An anisotropy barrier of 323(22) cm−1 was determined for 2Dy in an applied field of 1 kOe, and magnetic hysteresis loops were observed up to 7 K. nonPeerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-01-01 |