{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:50:43Z","timestamp":1760237443805,"version":"build-2065373602"},"reference-count":42,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2020,5,9]],"date-time":"2020-05-09T00:00:00Z","timestamp":1588982400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Inorganics"],"abstract":"<jats:p>The self-assembly reaction between NiI2, benzoic acid (PhCO2H) and the Schiff base chelate, N-naphthalidene-2-amino-5-chlorobenzoic acid (nacbH2), in the presence of the organic base triethylamine (NEt3), has resulted in the isolation and the structural, spectroscopic, and physicochemical characterization of the dodecanuclear [Ni12I2(OH)6(O2CPh)5(nacb)5(H2O)4(MeCN)4]I (1) cluster compound in ~30% yield. Complex 1 has a cage-like conformation, comprising twelve distorted, octahedral NiII ions that are bridged by five \u03bc3-OH\u2212, one \u03bc-OH\u2212, an I\u2212 in 55% occupancy, five PhCO2\u2212 groups (under the \u03b71:\u03b71:\u03bc, \u03b71:\u03b72:\u03bc3 and \u03b72:\u03b72:\u03bc4 modes), and the naphthoxido and carboxylato O-atoms of five doubly deprotonated nacb2\u2212 groups. The overall {Ni12} cluster exhibits a nanosized structure with a diameter of ~2.5 nm and its metallic core can be conveniently described as a series of nine edge- or vertex-sharing {Ni3} triangular subunits. Complex 1 is the highest nuclearity coordination compound bearing the nacbH2 chelate, and a rare example of polynuclear NiII complex containing coordinating I\u2212 ions. Direct current (DC) magnetic susceptibility studies revealed the presence of predominant antiferromagnetic exchange interactions between the NiII ions, while photophysical studies of 1 in the solid-state showed a cyan-to-green centered emission at 520 nm, upon maximum excitation at 380 nm. The reported results demonstrate the rich coordination chemistry of the deprotonated nacb2\u2212 chelate in the presence of NiII metal ions, and the ability of this ligand to adopt a variety of different bridging modes, thus fostering the formation of high-nuclearity molecules with rare, nanosized dimensions and interesting physical (i.e., magnetic and optical) properties.<\/jats:p>","DOI":"10.3390\/inorganics8050032","type":"journal-article","created":{"date-parts":[[2020,5,11]],"date-time":"2020-05-11T10:01:18Z","timestamp":1589191278000},"page":"32","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Rare Nuclearities in Ni(II) Cluster Chemistry: An Unprecedented {Ni12} Nanosized Cage from the Use of N-Naphthalidene-2-Amino-5-Chlorobenzoic Acid"],"prefix":"10.3390","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8786-3890","authenticated-orcid":false,"given":"Panagiota S.","family":"Perlepe","sequence":"first","affiliation":[{"name":"Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, ON L2S 3A1, Canada"}]},{"given":"Konstantinos N.","family":"Pantelis","sequence":"additional","affiliation":[{"name":"Chemistry Department, University of Patras, 265 04 Patras, Greece"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9229-1412","authenticated-orcid":false,"given":"Lu\u00eds","family":"Cunha-Silva","sequence":"additional","affiliation":[{"name":"LAQV\/REQUIMTE &amp; Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7115-9866","authenticated-orcid":false,"given":"Vlasoula","family":"Bekiari","sequence":"additional","affiliation":[{"name":"School of Agricultural Sciences, University of Patras, 30200 Messolonghi, Greece"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6274-6866","authenticated-orcid":false,"given":"Albert","family":"Escuer","sequence":"additional","affiliation":[{"name":"Departament de Quimica Inorg\u00e0nica i Org\u00e0nica, Secci\u00f3 Inorg\u00e0nica and Institut de Nanoci\u00e8ncia i Nanotecnologia (IN2UB), Universitat de Barcelona, Mart\u00ed Franqu\u00e9s 1-11, 08028 Barcelona, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9798-9331","authenticated-orcid":false,"given":"Theocharis C.","family":"Stamatatos","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, ON L2S 3A1, Canada"},{"name":"Chemistry Department, University of Patras, 265 04 Patras, Greece"}]}],"member":"1968","published-online":{"date-parts":[[2020,5,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1597","DOI":"10.1039\/C5CS00590F","article-title":"Filling the gap between the quantum and classical worlds of nanoscale magnetism: Giant molecular aggregates based on paramagnetic 3d metal ions","volume":"45","author":"Papatriantafyllopoulou","year":"2016","journal-title":"Chem. 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