Ln-Pt electron polarization effects on the magnetic relaxation of heterometallic Ho- and Er-Pt complexes

Takefumi Yoshida; David C Izuogu; Hai-Tao Zhang; Goulven Cosquer; Hitoshi Abe; Wolfgang Wernsdorfer; Brian K Breedlove; Masahiro Yamashita

doi:10.1039/c8dt03338b

Ln-Pt electron polarization effects on the magnetic relaxation of heterometallic Ho- and Er-Pt complexes

Dalton Trans. 2019 Jun 7;48(21):7144-7149. doi: 10.1039/c8dt03338b. Epub 2018 Sep 28.

Authors

Takefumi Yoshida¹, David C Izuogu², Hai-Tao Zhang¹, Goulven Cosquer¹, Hitoshi Abe³, Wolfgang Wernsdorfer⁴, Brian K Breedlove¹, Masahiro Yamashita⁵

Affiliations

¹ Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan. YOSHIDA.Takefumi@nims.go.jp.
² Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan. YOSHIDA.Takefumi@nims.go.jp and Department of Pure & Industrial Chemistry, University of Nigeria, 410001, Nsukka, Nigeria.
³ Institute of Materials Structure Science High Energy Accelerator Research Organization (KEK) 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan and Department of Materials Structure Science, School of High Energy Accelerator Science, SOKENDAI(the Graduate University for Advanced Studies) 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
⁴ Physikalisches Institut, Karlsruher Institut für Technologie Wolfgang-Gaede-Str. 1, D-76131 Karlsruhe, Germany and CNRS and Université Grenoble Alpes, Institut Néel, 38042 Grenoble, France.
⁵ Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aza-Aoba, Aramaki, Sendai 980-8578, Japan. YOSHIDA.Takefumi@nims.go.jp and WPI-Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 980-8577, Japan and School of Materials Science and Engineering, Nankai University, Tianjin 300350, China.

PMID: 30265262
DOI: 10.1039/c8dt03338b

Abstract

Heterometallic Ln-Pt complexes, with the formula [Ln₂Pt₃(H₂O)₂(SAc)₁₂] (Ln = Ho(1), Er(2); SAc = thioacetate), were synthesized. From natural bond orbital (NBO) and local orbital locator (LOL) analyses and X-ray absorption fine structure (XAFS) measurements, it was clear that the Ln-Pt interactions or electron polarization occurred. Butterfly-type hysteresis was observed for both 1 and 2. 1 and 2 underwent field-induced slow magnetic relaxation up to 4 K. These magnetic properties were induced by Ln-Pt electron polarization.