{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T15:15:48Z","timestamp":1790262948200,"version":"4.1.0"},"reference-count":73,"publisher":"American Chemical Society (ACS)","issue":"11","license":[{"start":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T00:00:00Z","timestamp":1779753600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000266","name":"Engineering and Physical Sciences Research Council","doi-asserted-by":"publisher","award":["EP\/X042782\/1"],"award-info":[{"award-number":["EP\/X042782\/1"]}],"id":[{"id":"10.13039\/501100000266","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,6,9]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>van der Waals metal\u2013organic magnets (vdW MOMs) offer the possibility of realizing a wide range of magnetic functionalities not possible in inorganic vdW magnets. In particular, their modularity allows for specific control over ligand-mediated superexchange and hence their ground states. We report a new vdW MOM, CrCl2(btd) (btd = 2,1,3-benzothiadiazole), assembled from a high-energy early transition metal and a redox-active ligand, which leads to a small charge-transfer gap. We solve the structure using a combination of powder neutron diffraction and single-crystal electron diffraction, showing that this material contains Cr2+btd0. Magnetometry, neutron diffraction, and inelastic neutron scattering measurements allow us to quantitatively determine the magnetic properties of this vdW magnet, showing it is a collinear rectangular antiferromagnet with small easy-axis anisotropy (JCl = \u221215.31(5) K, Jbtd = \u22126.96(10) K, D = \u22122.0(2) K). Critically, we find that the superexchange through btd, with a low-lying LUMO, is significantly stronger than in the CrCl2(pym) (pym = pyrimidine) analogue (Jpym = +1.2(2) K), demonstrating that exchange can be enhanced by potentially redox-active ligands without actual electron-transfer onto ligands. This work provides a route toward vdW antiferromagnetic MOMs with strong magnetic superexchange.<\/jats:p>","DOI":"10.1021\/acs.chemmater.6c00516","type":"journal-article","created":{"date-parts":[[2026,5,26]],"date-time":"2026-05-26T20:53:07Z","timestamp":1779828787000},"page":"5649-5657","source":"Crossref","is-referenced-by-count":1,"title":["Enhancing\nSuperexchange through Frontier Orbital Engineering\nin a van der Waals Metal\u2013Organic Magnet"],"prefix":"10.1021","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3751-9781","authenticated-orcid":true,"given":"Jem","family":"Pitcairn","sequence":"first","affiliation":[{"name":"University of Nottingham , , University Park , ,","place":["Nottingham, United Kingdom, NG7 2RD"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mario Antonio T.","family":"Ongkiko","sequence":"additional","affiliation":[{"name":"University of Birmingham , , ,","place":["Birmingham, United Kingdom, B15 2TT"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter J.","family":"Speakman","sequence":"additional","affiliation":[{"name":"University of Nottingham , , University Park , ,","place":["Nottingham, United Kingdom, NG7 2RD"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeremiah P.","family":"Tidey","sequence":"additional","affiliation":[{"name":"University of Warwick , , Gibbet Hill Road , ,","place":["Coventry, United Kingdom, CV4 7AL"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jack W.","family":"Jordan","sequence":"additional","affiliation":[{"name":"University of Nottingham , , Jubilee Campus , ,","place":["Nottingham, United Kingdom, NG7 2GT"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2246-4466","authenticated-orcid":true,"given":"Graham N.","family":"Newton","sequence":"additional","affiliation":[{"name":"University of Nottingham , , Jubilee Campus , ,","place":["Nottingham, United Kingdom, NG7 2GT"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8845-6576","authenticated-orcid":true,"given":"Pascal","family":"Manuel","sequence":"additional","affiliation":[{"name":"ISIS Neutron and Muon Source , ,","place":["Didcot, United Kingdom, OX11 0QX"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0053-0178","authenticated-orcid":true,"given":"J. Ross","family":"Stewart","sequence":"additional","affiliation":[{"name":"ISIS Neutron and Muon Source , ,","place":["Didcot, United Kingdom, OX11 0QX"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7453-5698","authenticated-orcid":true,"given":"Andrew J.","family":"Morris","sequence":"additional","affiliation":[{"name":"University of Birmingham , , ,","place":["Birmingham, United Kingdom, B15 2TT"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0408-7647","authenticated-orcid":true,"given":"Matthew J.","family":"Cliffe","sequence":"additional","affiliation":[{"name":"University of Nottingham , , University Park , ,","place":["Nottingham, United Kingdom, NG7 2RD"]},{"name":"University of Cambridge , , 27 Charles Babbage Road , ,","place":["Cambridge, United Kingdom, CB3 OFS"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,5,26]]},"reference":[{"key":"2026072621073023400_cit1","doi-asserted-by":"publisher","first-page":"8716","DOI":"10.1021\/acs.chemrev.9b00666","article-title":"Metal-Organic Framework Magnets","volume":"120","author":"Thorarinsdottir","year":"2020","journal-title":"Chem. 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