FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1948801510> ?p ?o ?g. }

• W1948801510 endingPage "1003" @default.
• W1948801510 startingPage "1003" @default.
• W1948801510 abstract "A family of tetranuclear mixed-valent Mn(II)(2)/Mn(III)(2) complexes of type [Mn(4)(LH(2))(2)(LH)(2)(H(2)O)(x)(RCO(2))(2)](Y)2.nS has been synthesised and structurally characterised, where LH(3) = triethanolamine (N(CH(2)CH(2)OH)(3)), (R=CH(3), x=2, Y = CH(3)CO(2)-, n=2, S = H(2)O; 1), (R=C(6)H(5), x=0, Y=C(6)H(5)CO(2)-, n=1, S = CH(3)CN; 2), (R=C(2)H(5), x=0, Y=ClO(4)(-), n=0; 3). A common structural core was deduced from X-ray crystallography and consists of a rhomboidal (planar-diamond) array with two 7-coordinate Mn(II) wingtip (w) centres and two 6-coordinate Mn(III) body (b) centres. The Mn(III) ions are bridged to the Mn(II) ions by mu3-oxygen atoms from a deprotonated alcohol arm of each tridentate LH(2-) ligand and by mu2-oxygen atoms from each tetradentate LH(2)(-) ligand. The four nitrogen atoms from LH(2-) and LH(2)(-) groups, together with bridging and terminal carboxylates oxygens complete the outer coordination sites around the Mn atoms. A feature of these clusters is that they are linked together in the crystal lattice by hydrogen-bonding interactions involving a non-coordinated hydroxyl arm on each LH(2-) group. Detailed DC and AC magnetic susceptibility measurements and magnetisation isotherms have been made on the three complexes and show that intra-cluster ferromagnetic coupling is occurring between the S = 2 Mn(III) and S = 5/2 Mn(II) ions to yield S = 9 ground states. The g, J(bb) and J(wb) parameters have been deduced. Inter-cluster antiferromagnetic coupling was noted in and this influences the magnetisation versus field behaviour and the temperature and magnitude of the out-of-phase AC chiM maxima in comparison to those observed for and. An Arrhenius plot of the reciprocal temperature of the maxima in chiM obtained at different frequencies (10 to 1500 Hz), in the range 1.75 K to 4 K, against the natural logarithm of the magnetization relaxation rate (1/tau) yielded values of the activation energies and pre-exponential factors for two of these new tetranuclear single-molecule magnets (SMMs), and. The activation energies were compared with the potential energy barrier height, U, for magnetisation direction reversal (U = DS(2)) using the axial zero-field splitting parameter, D, deduced from the DC M/H isotherm analysis for these S = 9 species. The very small separation of S = 9 and 8 levels for these clusters highlights the limitations in the determination of D values from M/H data at low temperatures." @default.
• W1948801510 created "2016-06-24" @default.
• W1948801510 creator A5043580508 @default.
• W1948801510 creator A5057309074 @default.
• W1948801510 creator A5077691241 @default.
• W1948801510 creator A5086077890 @default.
• W1948801510 creator A5087607114 @default.
• W1948801510 creator A5023038149 @default.
• W1948801510 date "2004-01-01" @default.
• W1948801510 modified "2023-10-09" @default.
• W1948801510 title "Synthesis, structure and magnetism of new single molecule magnets composed of MnII2MnIII2 alkoxo-carboxylate bridged clusters capped by triethanolamine ligandsElectronic supplementary information (ESI) available: Detailed magnetisation discussion, Mn bond valence sums (Table S1), H-bonding details (Table S2). See http://www.rsc.org/suppdata/dt/b3/b312672b/" @default.
• W1948801510 cites W1518247323 @default.
• W1948801510 cites W1539796472 @default.
• W1948801510 cites W1965100534 @default.
• W1948801510 cites W1975568695 @default.
• W1948801510 cites W1978276605 @default.
• W1948801510 cites W2002949852 @default.
• W1948801510 cites W2032787413 @default.
• W1948801510 cites W2034238855 @default.
• W1948801510 cites W2039245213 @default.
• W1948801510 cites W2040892195 @default.
• W1948801510 cites W2066746481 @default.
• W1948801510 cites W2069007678 @default.
• W1948801510 cites W2071774753 @default.
• W1948801510 cites W2074900494 @default.
• W1948801510 cites W2077835498 @default.
• W1948801510 cites W2089632332 @default.
• W1948801510 cites W2157986221 @default.
• W1948801510 cites W2161478910 @default.
• W1948801510 doi "https://doi.org/10.1039/b312672b" @default.
• W1948801510 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15252679" @default.
• W1948801510 hasPublicationYear "2004" @default.
• W1948801510 type Work @default.
• W1948801510 sameAs 1948801510 @default.
• W1948801510 citedByCount "141" @default.
• W1948801510 countsByYear W19488015102012 @default.
• W1948801510 countsByYear W19488015102013 @default.
• W1948801510 countsByYear W19488015102014 @default.
• W1948801510 countsByYear W19488015102015 @default.
• W1948801510 countsByYear W19488015102016 @default.
• W1948801510 countsByYear W19488015102017 @default.
• W1948801510 countsByYear W19488015102018 @default.
• W1948801510 countsByYear W19488015102019 @default.
• W1948801510 countsByYear W19488015102020 @default.
• W1948801510 countsByYear W19488015102021 @default.
• W1948801510 countsByYear W19488015102022 @default.
• W1948801510 crossrefType "journal-article" @default.
• W1948801510 hasAuthorship W1948801510A5023038149 @default.
• W1948801510 hasAuthorship W1948801510A5043580508 @default.
• W1948801510 hasAuthorship W1948801510A5057309074 @default.
• W1948801510 hasAuthorship W1948801510A5077691241 @default.
• W1948801510 hasAuthorship W1948801510A5086077890 @default.
• W1948801510 hasAuthorship W1948801510A5087607114 @default.
• W1948801510 hasConcept C113196181 @default.
• W1948801510 hasConcept C115260700 @default.
• W1948801510 hasConcept C115624301 @default.
• W1948801510 hasConcept C116569031 @default.
• W1948801510 hasConcept C118629725 @default.
• W1948801510 hasConcept C121332964 @default.
• W1948801510 hasConcept C145148216 @default.
• W1948801510 hasConcept C168900304 @default.
• W1948801510 hasConcept C170493617 @default.
• W1948801510 hasConcept C178790620 @default.
• W1948801510 hasConcept C185592680 @default.
• W1948801510 hasConcept C197162081 @default.
• W1948801510 hasConcept C2775897365 @default.
• W1948801510 hasConcept C2778074193 @default.
• W1948801510 hasConcept C32546565 @default.
• W1948801510 hasConcept C32909587 @default.
• W1948801510 hasConcept C43617362 @default.
• W1948801510 hasConcept C55493867 @default.
• W1948801510 hasConcept C62520636 @default.
• W1948801510 hasConcept C71240020 @default.
• W1948801510 hasConcept C8010536 @default.
• W1948801510 hasConceptScore W1948801510C113196181 @default.
• W1948801510 hasConceptScore W1948801510C115260700 @default.
• W1948801510 hasConceptScore W1948801510C115624301 @default.
• W1948801510 hasConceptScore W1948801510C116569031 @default.
• W1948801510 hasConceptScore W1948801510C118629725 @default.
• W1948801510 hasConceptScore W1948801510C121332964 @default.
• W1948801510 hasConceptScore W1948801510C145148216 @default.
• W1948801510 hasConceptScore W1948801510C168900304 @default.
• W1948801510 hasConceptScore W1948801510C170493617 @default.
• W1948801510 hasConceptScore W1948801510C178790620 @default.
• W1948801510 hasConceptScore W1948801510C185592680 @default.
• W1948801510 hasConceptScore W1948801510C197162081 @default.
• W1948801510 hasConceptScore W1948801510C2775897365 @default.
• W1948801510 hasConceptScore W1948801510C2778074193 @default.
• W1948801510 hasConceptScore W1948801510C32546565 @default.
• W1948801510 hasConceptScore W1948801510C32909587 @default.
• W1948801510 hasConceptScore W1948801510C43617362 @default.
• W1948801510 hasConceptScore W1948801510C55493867 @default.
• W1948801510 hasConceptScore W1948801510C62520636 @default.
• W1948801510 hasConceptScore W1948801510C71240020 @default.
• W1948801510 hasConceptScore W1948801510C8010536 @default.
• W1948801510 hasIssue "7" @default.
• W1948801510 hasLocation W19488015101 @default.
• W1948801510 hasLocation W19488015102 @default.

• next