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However, homochiral cyanido\u2010bridged dimetallic complexes are rare, and making them ferroelectric is a great challenge. Introducing C\u2212F\u22c5\u22c5\u22c5K interactions between the guest chiral cations and the host [KFe(CN)\n                    <jats:sub>6<\/jats:sub>\n                    ]\n                    <jats:sup>2\u2212<\/jats:sup>\n                    framework, gives three\u2010dimensional cyanido\u2010bridged dimetallic multiferroics, [\n                    <jats:italic>R<\/jats:italic>\n                    \u2010 and\n                    <jats:italic>S<\/jats:italic>\n                    \u20103\u2010fluoropyrrolidinium]\n                    <jats:sub>2<\/jats:sub>\n                    [KFe(CN)\n                    <jats:sub>6<\/jats:sub>\n                    ] (\n                    <jats:italic>R<\/jats:italic>\n                    \u2010 and\n                    <jats:italic>S<\/jats:italic>\n                    \u20103\u2010FPC). The mirror\u2010symmetric vibrational circular dichroism (VCD) signal shows their enantiomeric nature.\n                    <jats:italic>R<\/jats:italic>\n                    \u2010 and\n                    <jats:italic>S<\/jats:italic>\n                    \u20103\u2010FPC crystallize in the same chiral\u2010polar space group\n                    <jats:italic>P<\/jats:italic>\n                    2\n                    <jats:sub>1<\/jats:sub>\n                    at 298\u2005K. Piezoresponse force microscopy (PFM), polarizing optical microscopy, and temperature\u2010dependent second\u2010harmonic generation (SHG) measurements show their multiferroic properties (the coexistence of ferroelectricity and ferroelasticity), in line with the Aizu notation of 222F2.\n                    <jats:italic>R<\/jats:italic>\n                    \u20103\u2010FPC shows excellent ferroelectricity with saturated polarization up to 9.4\u2005\u03bcC\u2009cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    .\n                  <\/jats:p>","DOI":"10.1002\/anie.202204135","type":"journal-article","created":{"date-parts":[[2022,6,7]],"date-time":"2022-06-07T06:45:50Z","timestamp":1654584350000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":41,"title":["Homochiral Multiferroic Cyanido\u2010Bridged Dimetallic Complexes Assembled by C\u2212F\u22c5\u22c5\u22c5K Interactions"],"prefix":"10.1002","volume":"61","author":[{"given":"Yu","family":"Mao","sequence":"first","affiliation":[{"name":"State Key Laboratory of Bioelectronics Jiangsu Key Laboratory for Biomaterials and Devices Southeast University  Nanjing 210096 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao\u2010Gang","family":"Chen","sequence":"additional","affiliation":[{"name":"Ordered Matter Science Research Center Nanchang University  Nanchang 330031 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhu\u2010Xiao","family":"Gu","sequence":"additional","affiliation":[{"name":"Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics Southeast University  Nanjing 211189 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhi\u2010Xu","family":"Zhang","sequence":"additional","affiliation":[{"name":"Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics Southeast University  Nanjing 211189 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xian\u2010Jiang","family":"Song","sequence":"additional","affiliation":[{"name":"Ordered Matter Science Research Center Nanchang University  Nanchang 330031 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ning","family":"Gu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Bioelectronics Jiangsu Key Laboratory for Biomaterials and Devices Southeast University  Nanjing 210096 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2364-0193","authenticated-orcid":false,"given":"Ren\u2010Gen","family":"Xiong","sequence":"additional","affiliation":[{"name":"Ordered Matter Science Research Center Nanchang University  Nanchang 330031 P. R. 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