New derivatives of an enneanuclear Mn SMM

M. Murugesu, G. Christou, W. Wernsdorfer, E.K. Brechin

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The reaction of the neutral triangular species [MnO(OCR)L] (R = Me, Ph, CMe; L = py) with the tripodal ligands Htmp (1, 1, 1-tris(hydroxymethyl)propane) and Hpeol (pentaerythritol) affords the enneanuclear complexes [MnO(OCMe)(tmp)(py)(HO)] (2); [MnO(OCMe)(Hpeol)(py)(HO)] (3); [MnO(OCCMe)(Hpeol)(py)(HO)] (4); and [MnO(OCPh)(Hpeol)(py)(HO)] (5). Complexes 2-5 are characterized by spin ground states of S = 17/2 with axial zero-field splitting parameters in the range D = -0.26-0.30 cm. Sweep-rate and temperature dependent hysteresis loops diagnostic of SMM behaviour are observed below 1.2 K featuring steps at regular intervals of field.
Original languageEnglish
Pages (from-to)1845-1848
Number of pages4
Issue number9-11
Publication statusPublished - 15 Jun 2007


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