Field-induced slow magnetic relaxation in low-spin S = 1/2 mononuclear osmium(v) complexes

Dalton Transactions : an International Journal of Inorganic Chemistry
Qian-Qian SuTai-Chu Lau

Abstract

Photochemical reactions of (PPh4)[OsVI(N)(L)(CN)3] (NO2-OsN) with piperidine and pyrrolidine afforded two osmium(v) hydrazido compounds, (PPh4)[OsV(L)(CN)3(NNC5H10)] ([PPh4]1) and (PPh4)[OsV(L)(CN)3(NNC4H8)] ([PPh4]2), respectively. Their structures consist of isolated, mononuclear distorted octahedral osmium anions that are well-separated from each other by PPh4+. Their low spin S = 1/2 and L = 1 ground state was confirmed by magnetometry and DFT calculations. Interestingly, both compounds exhibit slow magnetic relaxation under a bias dc-field. These osmium(v) complexes are potentially useful building-blocks for the construction of molecule-based architectures with interesting magnetic properties. In contrast, the structurally related (PPh4)[OsIII(L)(CN)3(NH3)] ([PPh4]3), which also has a low-spin S = 1/2 ground state but with a different electronic configuration (5d5), does not exhibit slow magnetic relaxation, due to the absence of any orbital moment (L = 0). Furthermore, the structurally different osmium(v) hydrazido compound reported by Meyer, [OsV(tpy)(Cl)2(NNC5H10)](PF6) (4[PF6]), also does not exhibit slow magnetic relaxation due possibly to a change in magnetic anisotropy from axial for [PPh4]1 and [PPh4]2 to planar.

References

Apr 12, 2001·Nature·M N Leuenberger, D Loss
Mar 16, 2007·Physical Review Letters·Arzhang ArdavanRichard E P Winpenny
Dec 25, 2007·Acta Crystallographica. Section A, Foundations of Crystallography·George M Sheldrick
Feb 26, 2008·Nature Materials·Lapo Bogani, Wolfgang Wernsdorfer
Jan 9, 2010·Journal of the American Chemical Society·Danna E FreedmanJeffrey R Long
Mar 25, 2010·The Journal of Chemical Physics·Giovanni Scalmani, Michael J Frisch
Jul 27, 2010·Chemical Communications : Chem Comm·Jing XiangTai-Chu Lau
Sep 9, 2011·Journal of the American Chemical Society·Titel JurcaDarrin S Richeson
Dec 7, 2011·Journal of the American Chemical Society·Joseph M Zadrozny, Jeffrey R Long
Feb 14, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Jing XiangTai-Chu Lau
Sep 12, 2012·Journal of the American Chemical Society·Julia VallejoEmilio Pardo
Jan 11, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Shiori HinoTakashi Kajiwara
Jan 18, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Jing XiangTai-Chu Lau
Jan 26, 2013·Journal of the American Chemical Society·Renaud RuampsNathalie Guihéry
Apr 17, 2013·Journal of the American Chemical Society·Silvia Gomez-CocaEliseo Ruiz
Jun 22, 2013·Nature Chemistry·Joseph M ZadroznyJeffrey R Long
Aug 21, 2013·Journal of the American Chemical Society·José Martínez-LilloJ Krzystek
Sep 27, 2013·Journal of the American Chemical Society·Xiaowen FengJeffrey R Long
Dec 10, 2013·Journal of the American Chemical Society·Corine MathonièreJeremy M Smith
Dec 25, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Jennifer J Le RoyMuralee Murugesu
Jul 2, 2014·Nature Communications·Silvia Gómez-CocaFernando Luis
Jul 30, 2014·Journal of the American Chemical Society·Prinson P SamuelNaresh S Dalal
Oct 21, 2014·Nature Communications·Katharina BaderJoris van Slageren
Oct 24, 2014·Journal of the American Chemical Society·Joseph M ZadroznyDanna E Freedman
Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·George M Sheldrick
Feb 27, 2015·Chemical Society Reviews·Gavin A Craig, Mark Murrie
Jul 23, 2015·Journal of the American Chemical Society·Valentin V NovikovRichard E P Winpenny
Aug 12, 2015·Chemistry : a European Journal·Saurabh Kumar SinghGopalan Rajaraman
Sep 1, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·A Ben KhélifaK Bernot
Jul 21, 2016·Nature Communications·Kasper S PedersenRodolphe Clérac
Oct 26, 2016·Chemical Communications : Chem Comm·Xiaowen FengRodolphe Clérac
Oct 18, 2016·Chemical Science·Mei DingJeremy M Smith
Dec 13, 2016·Journal of the American Chemical Society·Xiao-Nan YaoSong Gao
Jan 10, 2017·Inorganic Chemistry·Roman BočaDušan Valigura
Jan 14, 2017·Chemical Communications : Chem Comm·Jing XiangTai-Chu Lau
Jun 28, 2017·Chemistry : a European Journal·Kasper S PedersenRodolphe Clérac

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Citations

Nov 6, 2020·Angewandte Chemie·Nina X GuJonas C Peters
Dec 24, 2020·Chemical Communications : Chem Comm·Qian-Qian SuTai-Chu Lau
Oct 13, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Min PengTai-Chu Lau

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