Symmetry of octa-coordination environment has a substantial influence on dinuclear TbIII triple-decker single-molecule magnets

Chemical Science
Keiichi KatohMasahiro Yamashita

Abstract

Single-molecule magnet (SMM) properties of terbium(iii)-phthalocyaninato and porphyrinato mixed ligand triple-decker complexes, [(TTP)Tb(Pc)Tb(TTP)] (1) and [(Pc)Tb(Pc)Tb(TTP)] type (2), were studied and were compared with those of the TbIII homoleptic triple-decker complex [(obPc)Tb(obPc)Tb(obPc)] (3) in order to elucidate the relationship between octa-coordination environments and SMM properties (TbIII = terbium(iii), TTP2- = tetraphenylporphyrinato, Pc2- = phthalocyaninato, obPc2- = 2,3,9,10,16,17,23,24-octabutoxyphthalocyaninato). By combining TTP2- and Pc2- with TbIII ions, it is possible to make three octa-coordination environments: SP-SP, SAP-SP and SAP-SAP sites, where SAP is square-antiprismatic and SP is square-prismatic. The direction and magnitude of the ligand field (LF) strongly affect the magnetic properties. Complexes 2 and 3, which have SAP-SAP sites, undergo dual magnetic relaxation processes in the low temperature region in a direct current magnetic field. On the other hand, 1, which has an SP-SP environment, undergoes a single magnetic relaxation process, indicating that the octa-coordination environments strongly influence the SMM properties. The SMM behaviour of dinuclear TbIII SMMs 1-3 were explained by u...Continue Reading

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Citations

Dec 1, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Leena MandalMasahiro Yamashita
Mar 13, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Ling ZhangWen-Bin Sun
Aug 27, 2019·Chemistry : a European Journal·Diogo A GálicoMuralee Murugesu
Feb 19, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Xingrui GaoPeng Chen
Jul 29, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Peter HahnBerthold Kersting
Feb 28, 2017·Chemical Communications : Chem Comm·Xiao-Lei LiJinkui Tang
Jul 12, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Ekaterina N TarakanovaLarisa G Tomilova
Jun 16, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Tsutomu YamabayashiMasahiro Yamashita
Aug 5, 2017·Materials·Ryo NakanishiMasahiro Yamashita
Aug 11, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Yu FangSong Gao
Feb 25, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Jing-Yuan GeJing-Lin Zuo
Jan 8, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Yu FangSong Gao
Jan 8, 2022·Dalton Transactions : an International Journal of Inorganic Chemistry·Krishna Sundar DasRaju Mondal

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Methods Mentioned

BETA
X-ray
column chromatography

Software Mentioned

SAP
SHELXL
Mercury

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