Competing Phases Involving Spin-State and Ligand Structural Orderings in a Multistable Two-Dimensional Spin Crossover Coordination Polymer
| العنوان: | Competing Phases Involving Spin-State and Ligand Structural Orderings in a Multistable Two-Dimensional Spin Crossover Coordination Polymer |
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| المؤلفون: | Francisco Javier Valverde-Muñoz, Elzbieta Trzop, Eric Collet, Daopeng Zhang, José Antonio Real, M. Carmen Muñoz, Lucía Piñeiro-López |
| المساهمون: | Instituto de Ciencia Molecular (ICMol), Universitat de València (UV), Institut de Physique de Rennes (IPR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), PROMETEO/2016/147, Generalitat Valenciana, ANR-13-BS04-0002, Agence Nationale de la Recherche, CTQ2013-46275-P, European Regional Development Fund, MDM-2015-0538, Ministerio de Econom?a y Competitividad, Universitat de Val?ncia, Centre National de la Recherche Scientifique, 21671121, National Natural Science Foundation of China, Institut Universitaire de France, Rennes M?tropole, ANR-13-BS04-0002,FEMTOMAT,Etude femtoseconde rayons X et optique de la dynamique ultrarapide de photocommutation de matériaux moléculaires magnétiques(2013), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Crystal Growth & Design Crystal Growth & Design, 2017, 17 (5), pp.2736-2745. ⟨10.1021/acs.cgd.7b00218⟩ Crystal Growth & Design, American Chemical Society, 2017, 17 (5), pp.2736-2745. ⟨10.1021/acs.cgd.7b00218⟩ RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname |
| بيانات النشر: | American Chemical Society (ACS), 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Spin states, Condensed matter physics, 010405 organic chemistry, Ligand, Chemistry, Coordination polymer, Spontaneous symmetry breaking, General Chemistry, 010402 general chemistry, Condensed Matter Physics, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, Crystallography, Spin crossover, FISICA APLICADA, Phase (matter), [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], General Materials Science, Single crystal, Multistability |
| الوصف: | [EN] Competition between spin-crossover and structural ligand ordering is identified as responsible for multistability and generation of six different phases in a rigid two-dimensional coordination polymer formulated {Fe-II[Hg-II(SCN)(3)](2) mu-(4,4'-bipy)(2)}(n) (1) (4,4'-bipy = 4,4'-bipyridine). The structure of 1 consists of infinite linear [Fe(mu-4,4'-bipy)](n)(2n+) chains linked by in situ formed {[Hg-II(SCN)(3)](2)(mu-4,4'-bipy)}(2n-) anionic dimers. The thermal dependence of the high-spin fraction, his, features four magnetic phases defined by steps following the sequence gamma(HS) = 1 (phase 1) gamma(HS) = 1/2 (phase 2) gamma(HS) approximate to 1/3 (phase 3) gamma(HS) = 0 (phase 4) These four magnetic states are consistent with structural ordering stemming from the different commensurate or incommensurate high and low-spin populations [HS] [HS:LS], approximate to [HS:2LS] [LS1] inferred from single crystal-analysis. Furthermore, two additional phases are generated at low temperature. One, LS2 (gamma(HS) = 0, phase 5); is due to spontaneous symmetry breaking of the : LS-1 state below 85 K The other results from irradiating the low-temperature-LS2 Phase at 15 K with red light to photogenerate a HS phase of low symmetry (HS*) (gamma(HS) = 1, phase 6). Detailed structural studies of the six phases-unravd the pivotal role-played by the internal dihedral angle of the 4,4'-bipy ligands in the microscopic. mechanism responsible for multistability and multistep behavior in 1. This work was supported by the Spanish Ministerio de Economia y Competitividad (MINECO), FEDER (CTQ2013-46275-P and CTQ2016-78341-P), Unidad de Excelencia Maria de Maeztu (MDM-201S-0538), the Generalitat Valenciana through PROMETEO/2016/147, and the Institut Universitaire de France, the National Research Agency (ANR-13-BS04-0002), Rennes Metropole and CNRS (Post-Doc funding of E.T.). L.P.L. and F.J.V.M. thank to the Universidad de Valencia and a MINECO for a predoctoral (FPI) grant. Prof. D. Zhang thanks for the support from the Natural Science Foundation of China (21671121). |
| وصف الملف: | application/pdf |
| تدمد: | 1528-7505 1528-7483 |
| DOI: | 10.1021/acs.cgd.7b00218 |
| DOI: | 10.1021/acs.cgd.7b00218⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8070906bf515b7cc2203d7facec5b8ed https://doi.org/10.1021/acs.cgd.7b00218 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....8070906bf515b7cc2203d7facec5b8ed |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15287505 15287483 |
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| DOI: | 10.1021/acs.cgd.7b00218 |