New structural types of Mn16 single-molecule magnets: W-shaped topology from reductive aggregation

Inorganic Chemistry
Annaliese E ThuijsGeorge Christou

Abstract

Two new Mn16 clusters are reported: [Mn16O10(OH)3(OMe)8(O2CPhBut)17(MeOH)5] (2) and [Mn16O16(OMe)6(O2CPh)12(NO3)4(MeOH)2(H2O)4] (3). The complexes were obtained by reductive aggregation of MnO4– in CH2Cl2/MeOH, and oxidation of MnII and preformed (NnBu4)[Mn4IIIO2(O2CPh)9(H2O)] with CeIV, respectively. The core of 2 has a Mn16III core with an unusual 1:2:3:4:3:2:1 layer structure and a W-shaped pleated topology, whereas 3 contains a central 2 × 3 Mn6IV planar grid held within a nonplanar Mn10III loop and is a rare example of a complex with nitrate ions bridging like carboxylate ions. Variable-temperature, solid-state dc susceptibility, and ac susceptibility studies reveal that 2 and 3 possess S = 12 and S = 8 ground states, respectively. Fits of dc magnetization data collected over a temperature range of 1.8–4.0 K and a magnetization range of 0.1–4 T were fit to give S = 12, D = −0.16(2) cm–1, g = 1.98(3) for 2 and S = 8, D = −0.22(1) cm–1, g = 1.99(2) for 3, where D is the axial zero-field splitting parameter. The ac in-phase (χM′T) susceptibility below 15 K confirmed the ground-state spin values of 2 and 3, as determined from dc data, and the appearance of frequency-dependent out-of-phase (χM″) signals revealed that both compl...Continue Reading

References

May 13, 1996·Physical Review Letters·J R FriedmanR Ziolo
Apr 4, 2002·Journal of the American Chemical Society·Colette BoskovicGeorge Christou
Aug 31, 2002·Angewandte Chemie·Jonathan T BrockmanGeorge Christou
Jan 28, 2003·Angewandte Chemie·Dante Gatteschi, Roberta Sessoli
Dec 11, 2003·Journal of the American Chemical Society·Anastasios J TasiopoulosGeorge Christou
Jan 6, 2004·Angewandte Chemie·Anastasios J TasiopoulosGeorge Christou
Apr 15, 2004·Angewandte Chemie·Anastasios J TasiopoulosGeorge Christou
Sep 30, 2004·Journal of the American Chemical Society·Núria Aliaga-AlcaldeGeorge Christou
Nov 9, 2004·Inorganic Chemistry·Philippa KingGeorge Christou
Aug 11, 2005·Physical Review Letters·W WernsdorferG Christou
Oct 18, 2005·Chemical Communications : Chem Comm·Euan K Brechin
Nov 22, 2005·Inorganic Chemistry·Philippa KingGeorge Christou
Jul 6, 2006·Angewandte Chemie·Ayuk M AkoAnnie K Powell
Dec 21, 2006·Angewandte Chemie·Theocharis C StamatatosGeorge Christou
Jan 18, 2007·Dalton Transactions : an International Journal of Inorganic Chemistry·Maria ManoliEuan K Brechin
Jul 31, 2007·Inorganic Chemistry·Maria ManoliEuan K Brechin
Oct 13, 2007·Inorganic Chemistry·Anastasios J TasiopoulosGeorge Christou
Nov 6, 2007·Inorganic Chemistry·Oliver Waldmann
Apr 16, 2008·Inorganic Chemistry·Abhudaya MishraGeorge Christou
Jun 25, 2008·Inorganic Chemistry·Sonali J ShahDavid N Hendrickson
Oct 16, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Anastasios J Tasiopoulos, Spyros P Perlepes
Jan 28, 2009·Acta Crystallographica. Section D, Biological Crystallography·Anthony L Spek
Apr 14, 2009·Inorganic Chemistry·Louise N DaweLaurence K Thompson
May 8, 2009·Chemical Society Reviews·Rashmi Bagai, George Christou
Aug 20, 2009·Journal of the American Chemical Society·Jeffrey D Rinehart, Jeffrey R Long
Apr 24, 2010·Chemical Society Reviews·George E KostakisAnnie K Powell
Apr 28, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Marco HaryonoYves Journaux
Jun 30, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Mei WangQiu-Tian Liu
Oct 5, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Che-Chih WuEn-Che Yang
Dec 15, 2010·Inorganic Chemistry·Constantina PapatriantafyllopoulouGeorge Christou
Feb 11, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Hui-Sheng WangXiao-Zeng You

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Citations

Nov 9, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Radovan HerchelZdeněk Trávníček

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