{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T00:41:45Z","timestamp":1789000905649,"version":"build-2803163510"},"reference-count":44,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2014,1,22]],"date-time":"2014-01-22T00:00:00Z","timestamp":1390348800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Angew Chem Int Ed"],"published-print":{"date-parts":[[2014,2,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Tetraborides of chromium and manganese exhibit an unusual boron\u2010atom framework that resembles the hypothetical tetragonal diamond. They are believed to be very hard. Single crystals of MnB<jats:sub>4<\/jats:sub>have now been grown. The compound crystallizes in the monoclinic crystal system (space group<jats:italic>P<\/jats:italic>2<jats:sub>1<\/jats:sub>\/<jats:italic>c<\/jats:italic>) with a structure that has four crystallographically independent boron\u2010atom positions, as confirmed by<jats:sup>11<\/jats:sup>B MAS\u2010NMR spectroscopy. An unexpected short distance between the Mn atoms suggests a double Mn\u2013Mn bond and is caused by Peierls distortion. The structure was solved using group\u2010subgroup\u2010relationships. DFT calculations indicate Mn<jats:sup>I<\/jats:sup>centers and paramagnetism, as confirmed by magnetic measurements. The density of states shows a pseudo\u2010band gap at the Fermi energy and semiconducting behavior was observed for MnB<jats:sub>4<\/jats:sub>.<\/jats:p>","DOI":"10.1002\/anie.201306548","type":"journal-article","created":{"date-parts":[[2014,1,22]],"date-time":"2014-01-22T16:16:32Z","timestamp":1390407392000},"page":"1684-1688","source":"Crossref","is-referenced-by-count":64,"title":["Peierls\u2010Distorted Monoclinic MnB<sub>4<\/sub>with a Mn\uf8ffMn Bond"],"prefix":"10.1002","volume":"53","author":[{"given":"Arno","family":"Knappschneider","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian","family":"Litterscheid","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nathan C.","family":"George","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jakoah","family":"Brgoch","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Norbert","family":"Wagner","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johannes","family":"Beck","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joshua A.","family":"Kurzman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ram","family":"Seshadri","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Barbara","family":"Albert","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2014,1,22]]},"reference":[{"key":"e_1_2_4_1_2","first-page":"2953","volume":"251","author":"Fruchart R.","year":"1960","journal-title":"C. 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