dc.contributor.author | Mishra, Abhudaya | en |
dc.contributor.author | Tasiopoulos, Anastasios J. | en |
dc.contributor.author | Wernsdorfer, W. | en |
dc.contributor.author | Moushi, Eleni E. | en |
dc.contributor.author | Moulton, B. | en |
dc.contributor.author | Zaworotko, M. J. | en |
dc.contributor.author | Abboud, K. A. | en |
dc.contributor.author | Christou, George | en |
dc.creator | Mishra, Abhudaya | en |
dc.creator | Tasiopoulos, Anastasios J. | en |
dc.creator | Wernsdorfer, W. | en |
dc.creator | Moushi, Eleni E. | en |
dc.creator | Moulton, B. | en |
dc.creator | Zaworotko, M. J. | en |
dc.creator | Abboud, K. A. | en |
dc.creator | Christou, George | en |
dc.date.accessioned | 2019-11-21T06:21:31Z | |
dc.date.available | 2019-11-21T06:21:31Z | |
dc.date.issued | 2008 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/55863 | |
dc.description.abstract | Four heterometallic, enneanuclear Mn8Ce clusters [Mn 8CeO8(O2CMe)12(H2O) 4] (4), [Mn8CeO8(O2CMe) 12(py)4] (5), [Mn8CeO8(O 2CPh)12(MeCN)4] [Mn8CeO 8(O2CPh)12(dioxane)4] (6), and [Mn8CeO8(O2CCHPh2) 12(H2O)4] (7) have been prepared by various methods. Their cores are essentially isostructural and comprise a nonplanar, saddlelike [MnIII8O8]8+ loop containing a central CeIV ion attached to the eight μ3-O2- ions. Peripheral ligation around the [Mn 8CeO8]12+ core is provided by eight μ- and four μ3-O2CR- groups. Terminal ligation on four MnIII atoms is provided by H2O in 4 and 7, pyridine in 5, and MeCN/dioxane in 6. Solid-state magnetic susceptibility studies, fits of dc magnetization vs field and temperature data, and in-phase ac susceptibility studies in a zero dc field have established that complexes 4, 5, and 7 possess S = 16, S = 4 or 5, and S = 6 ± 1 spin ground states, respectively, but in all cases there are very low-lying excited states. The large variation in the ground-state spins for this isostructural family is rationalized as due to a combination of weak exchange interactions between the constituent MnIII atoms, and the presence of both nearest-neighbor and next-nearest-interactions of comparable magnitudes. Magnetization vs applied dc field sweeps on single crystals of 4·4H2O and 7·4H2O·3MeCN·2CH2Cl2 down to 0.04 K have established that these two complexes are new single-molecule magnets (SMMs). The former also shows an exchange-bias, a perturbation of its single-molecule properties from very weak intermolecular interactions mediated by hydrogen-bonding interactions with lattice-water molecules of crystallization. © 2008 American Chemical Society. | en |
dc.source | Inorganic chemistry | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-46749129830&doi=10.1021%2fic8001064&partnerID=40&md5=e4b4261f96e5d4d31ed49e402fae98a2 | |
dc.title | Single-molecule magnets: A family of MnIII/CeIV complexes with a [Mn8CeO8]12+ core | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1021/ic8001064 | |
dc.description.volume | 47 | |
dc.description.issue | 11 | |
dc.description.startingpage | 4832 | |
dc.description.endingpage | 4843 | |
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 :55</p> | en |
dc.source.abbreviation | Inorg.Chem. | en |
dc.contributor.orcid | Tasiopoulos, Anastasios J. [0000-0002-4804-3822] | |
dc.gnosis.orcid | 0000-0002-4804-3822 | |