Synthesis, structure, and magnetic properties of a Mn(21) single-molecule magnet

Inorganic Chemistry
E C SañudoGeorge Christou

Abstract

The reaction of [Mn(3)O(O(2)CMe)(6)(py)(3)](ClO(4)) (1; 3Mn(III)) with [Mn(10)O(4)(OH)(2)(O(2)CMe)(8)(hmp)(8)](ClO(4))(4) (2; 10Mn(III)) in MeCN affords the new mixed-valent complex [Mn(21)O(14)(OH)(2)(O(2)CMe)(16)(hmp)(8)(pic)(2)(py)(H(2)O)](ClO(4))(4) (3; 3Mn(II)-18Mn(III); hmp(-) is the anion of 2-(hydroxymethyl)pyridine), with an average Mn oxidation state of +2.85. Complex 3.7MeCN crystallizes in the triclinic space group P. The structure consists of a low symmetry [Mn(21)(micro(4)-O)(4)(micro(3)-O)(12)(micro-O)(16)] core, with peripheral ligation provided by 16 MeCO(2)(-), 8 hmp(-), and 2 pic(-) groups and one molecule each of water and pyridine. The magnetic properties of 3 were investigated by both dc and ac magnetic susceptibility measurements. Fitting of dc magnetization data collected in the 0.1-0.8 T and 1.8-4.0 K ranges gave S = (17)/(2), D approximately -0.086 cm(-)(1), and g approximately 1.8, where S is the molecular spin of the Mn(21) complex and D is the axial zero-field splitting parameter. ac susceptibility studies in the 10-997 Hz frequency range reveal the presence of a frequency-dependent out-of-phase ac magnetic susceptibility (chi(M)' ') signal consistent with slow magnetization relaxation rates. Fittin...Continue Reading

References

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Jul 18, 2002·Chemical Communications : Chem Comm·David J PriceKeith S Murray
Aug 15, 2002·Journal of the American Chemical Society·Euan K BrechinGeorge Christou
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Feb 20, 2004·Journal of the American Chemical Society·Monica SolerGeorge Christou

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Citations

Jun 22, 2005·Chemical Communications : Chem Comm·Stefania TanaseJan Reedijk
Oct 18, 2005·Chemical Communications : Chem Comm·Euan K Brechin
Apr 8, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Lidia Rosado Piquer, E Carolina Sañudo
Nov 20, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Lei SunChangneng Chen
Jun 13, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Jianfeng WuJinkui Tang
Feb 3, 2007·Angewandte Chemie·Ming-Hua ZengXiao-Ming Chen
Mar 19, 2008·Chemistry : a European Journal·Valeriu MereacreAnnie K Powell
Jul 22, 2008·Angewandte Chemie·Theocharis C StamatatosGeorge Christou
Nov 6, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Leigh F JonesEuan K Brechin
Apr 1, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Constantinos J MiliosEuan K Brechin
Apr 20, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Valeriu MereacreAnnie K Powell
Apr 20, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiao-Qing ZhaoAnnie K Powell
Apr 28, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Eleni E MoushiAnastasios J Tasiopoulos
Apr 24, 2010·Chemical Society Reviews·George E KostakisAnnie K Powell
Aug 4, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Chrysa KozoniConstantinos J Milios
Sep 8, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Taketo TaguchiGeorge Christou
Sep 22, 2005·Angewandte Chemie·Richard T W ScottEuan K Brechin
Apr 13, 2006·Dalton Transactions : an International Journal of Inorganic Chemistry·E Carolina SañudoRichard E P Winpenny
Dec 17, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Theocharis C StamatatosGeorge Christou
Jul 2, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Prasanta BhowmikShouvik Chattopadhyay
May 26, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·Amin KhanAnnie K Powell
Mar 9, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Pei-Pei YangDai-Zheng Liao
Sep 25, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Wei YangJian-Min Dou
Sep 29, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Alba Pons-BalaguéE Carolina Sañudo
Dec 8, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Christos M KizasAnastasios J Tasiopoulos
Jan 31, 2013·Chemistry : a European Journal·Rituparna BiswasAshutosh Ghosh
Jul 28, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·L Rosado PiquerE C Sañudo
Apr 16, 2008·Inorganic Chemistry·Abhudaya MishraGeorge Christou
Sep 5, 2009·Inorganic Chemistry·Taketo TaguchiGeorge Christou

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