A Mn15 single-molecule magnet consisting of a supertetrahedron incorporated in a loop
dc.contributor.author | Moushi, Eleni E. | en |
dc.contributor.author | Masello, A. | en |
dc.contributor.author | Wernsdorfer, W. | en |
dc.contributor.author | Nastopoulos, Vassilios | en |
dc.contributor.author | Christou, George | en |
dc.contributor.author | Tasiopoulos, Anastasios J. | en |
dc.creator | Moushi, Eleni E. | en |
dc.creator | Masello, A. | en |
dc.creator | Wernsdorfer, W. | en |
dc.creator | Nastopoulos, Vassilios | en |
dc.creator | Christou, George | en |
dc.creator | Tasiopoulos, Anastasios J. | en |
dc.date.accessioned | 2019-11-21T06:21:37Z | |
dc.date.available | 2019-11-21T06:21:37Z | |
dc.date.issued | 2010 | |
dc.identifier.issn | 1477-9226 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/55880 | |
dc.description.abstract | Two new Mn15 clusters consisting of a supertetrahedron which is incorporated in a loop are reported. The reactions of [Mn(O2CEt) 2]·2H2O with the diols 1,3-propanediol (H 2pd) or 2-methyl-1,3-propanediol (H2mpd) in the presence of KX (X = CN-, Cl-, Br-, NO3 -, ClO4 -, OCN-, SCN-) afforded compounds [Mn15K(μ4-O)4(O 2CEt)11(pd)12(py)2] (1) and [Mn 15K(μ4-O)4(O2CEt) 11(mpd)12(py)2] (2). The structural core of 1 and 2 consists of a Mn11 loop and a Mn9K supertetrahedron sharing a Mn5 triangle. To the best of our knowledge, the structural motif of a supertetrahedron incorporated in a loop appears for the first time in metal cluster chemistry. Variable-temperature, solid-state direct current (dc) magnetic susceptibility studies in the 300-5 K range showed that the χMT value increases with decreasing T suggesting the existence of predominant ferromagnetic exchange interactions and a relatively large ground state spin. This was confirmed by field-variable temperature magnetization measurements which were fitted using a matrix diagonalization method to give S∼ 23/2, g = 1.92(1) and D = -0.071(2) cm-1. In addition, compound 1 displays frequency-dependent alternating current (ac) signals suggesting single-molecule magnetism (SMM) behaviour. This was proven by magnetization vs. dc field sweeps on single-crystals of 1·0.7py·1. 3MeCN, which displayed sweep rate- and temperature-dependent hysteresis loops. © The Royal Society of Chemistry 2010. | en |
dc.source | Dalton Transactions | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-77952388080&doi=10.1039%2fb927205d&partnerID=40&md5=68503bf8b2b5e94cc62cea62768d697c | |
dc.subject | article | en |
dc.subject | chemistry | en |
dc.subject | synthesis | en |
dc.subject | Manganese | en |
dc.subject | Manganese compounds | en |
dc.subject | Magnetic susceptibility | en |
dc.subject | magnetism | en |
dc.subject | Single crystals | en |
dc.subject | X ray crystallography | en |
dc.subject | Magnetic materials | en |
dc.subject | Alternating current | en |
dc.subject | Hysteresis | en |
dc.subject | Magnetics | en |
dc.subject | Single-molecule magnet | en |
dc.subject | Molecular Conformation | en |
dc.subject | conformation | en |
dc.subject | Coordination Complexes | en |
dc.subject | coordination compound | en |
dc.subject | Crystallography, X-Ray | en |
dc.subject | Temperature dependent | en |
dc.subject | Ferromagnetic exchange interaction | en |
dc.subject | Variable temperature | en |
dc.subject | Magnetization measurements | en |
dc.subject | DC field | en |
dc.subject | Frequency-dependent | en |
dc.subject | Ground-state spins | en |
dc.subject | Hysteresis loops | en |
dc.subject | Propanediols | en |
dc.subject | Single-molecule | en |
dc.subject | Direct current | en |
dc.subject | Matrix-diagonalization method | en |
dc.subject | Metal cluster | en |
dc.subject | Structural core | en |
dc.subject | Structural motifs | en |
dc.subject | Sweep rates | en |
dc.title | A Mn15 single-molecule magnet consisting of a supertetrahedron incorporated in a loop | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1039/b927205d | |
dc.description.volume | 39 | |
dc.description.issue | 20 | |
dc.description.startingpage | 4978 | |
dc.description.endingpage | 4985 | |
dc.author.faculty | 002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences | |
dc.author.department | Τμήμα Χημείας / Department of Chemistry | |
dc.type.uhtype | Article | en |
dc.description.notes | <p>Cited By :20</p> | en |
dc.source.abbreviation | Dalton Trans. | en |
dc.contributor.orcid | Tasiopoulos, Anastasios J. [0000-0002-4804-3822] | |
dc.contributor.orcid | Nastopoulos, Vassilios [0000-0003-4190-1342] | |
dc.gnosis.orcid | 0000-0002-4804-3822 | |
dc.gnosis.orcid | 0000-0003-4190-1342 |
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