Matches in SemOpenAlex for { <https://semopenalex.org/work/W2035273217> ?p ?o ?g. }
- W2035273217 endingPage "12872" @default.
- W2035273217 startingPage "12862" @default.
- W2035273217 abstract "The structural characterization of complexes [MnII4MnIII22(pdol)12(OCH3)12(O)16(N3)6] (1) and [MnII4MnIII22(pdol)12(OCH3)12(O)16(OH)2(H2O)(OCH3)3]·ClO4·5CH3OH (2), where pdol2- is di-2-pyridyl methanediol, reveals that each has a metallacryptand shell that encapsulates a manganese oxide core. Variable-temperature direct current magnetic susceptibility measurements on 2 indicate a paramagnetic ground state that results from an overall antiferromagnetic interaction in the cluster, with χT values decreasing from 300 K (51.2 cm3 K mol-1) to 2 K (19.8 cm3 K mol-1). Variable-temperature alternating current magnetic susceptibility measurements imply that both 1 and 2 behave as single-molecule magnets. Fitting the frequency-dependent out-of-phase magnetic susceptibility to the Arrhenius equation yields an effective energy barrier, Ueff, to magnetization relaxation of 16.5 ± 0.7 K (11.5 ± 0.5 cm-1) for 1 and 36.2 ± 2.0 K (25.1 ± 1.4 cm-1) for 2. The larger value for 2 is in agreement with the lower molecular symmetry, larger magnetoanisotropy, and higher ground spin state of 2 compared to those of 1. This observation suggests a new strategy for increasing the blocking temperatures in high-nuclearity manganese clusters." @default.
- W2035273217 created "2016-06-24" @default.
- W2035273217 creator A5001884632 @default.
- W2035273217 creator A5007203822 @default.
- W2035273217 creator A5030517003 @default.
- W2035273217 creator A5052855333 @default.
- W2035273217 creator A5054486321 @default.
- W2035273217 creator A5056575288 @default.
- W2035273217 creator A5081940180 @default.
- W2035273217 creator A5084987684 @default.
- W2035273217 date "2005-08-26" @default.
- W2035273217 modified "2023-10-11" @default.
- W2035273217 title "Metallacryptate Single-Molecule Magnets: Effect of Lower Molecular Symmetry on Blocking Temperature" @default.
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