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However, only ten of the theoretically possible 48 anions have been experimentally accessed to date as isolable salts. This brings up the question whether the other species are generally not achievable, or whether synthetic chemists just have not succeeded in their preparation so far. To contribute to a possible answer to this question, global minimum structures were calculated for all anions of the type (TrTt<jats:sub>3<\/jats:sub>)<jats:sup>5\u2212<\/jats:sup>, (TrPn<jats:sub>3<\/jats:sub>)<jats:sup>2\u2212<\/jats:sup>, and (Tt<jats:sub>2<\/jats:sub>Pn<jats:sub>2<\/jats:sub>)<jats:sup>2\u2212<\/jats:sup>, comprising elements of periods 3 to 6 (Tr: triel, Al\u22c5\u22c5\u22c5Tl; Tt: tetrel, Si\u22c5\u22c5\u22c5Pb; Pn: pnictogen, P\u22c5\u22c5\u22c5Bi). By analyzing the computational results, a concept was developed to predict which of the yet missing anions should be synthesizable and why. Additionally, the results of an electrophilic attack by protons or trimethylsilyl groups or a nucleophilic attack by transition metal complex fragments are described. The latter yields butterfly\u2010like structures that can be viewed as a new form of adaptable tridentate chelating ligands.<\/jats:p>","DOI":"10.1002\/chem.202001379","type":"journal-article","created":{"date-parts":[[2020,4,14]],"date-time":"2020-04-14T08:29:36Z","timestamp":1586852976000},"page":"11819-11828","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Systematic DFT Studies on Binary Pseudo\u2010tetrahedral Zintl Anions: Relative Stabilities and Reactivities towards Protons, Trimethylsilyl Groups, and Iron Complex Fragments"],"prefix":"10.1002","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0415-8089","authenticated-orcid":false,"given":"Lukas","family":"Guggolz","sequence":"first","affiliation":[{"name":"Fachbereich Chemie and Wissenschaftliches Zentrum f\u00fcr, Materialwissenschaften (WZMW) Philipps-Universit\u00e4t Marburg  Hans-Meerwein-Stra\u00dfe 4 35043 Marburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1325-9228","authenticated-orcid":false,"given":"Stefanie","family":"Dehnen","sequence":"additional","affiliation":[{"name":"Fachbereich Chemie and Wissenschaftliches Zentrum f\u00fcr, Materialwissenschaften (WZMW) Philipps-Universit\u00e4t Marburg  Hans-Meerwein-Stra\u00dfe 4 35043 Marburg Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2020,8,17]]},"reference":[{"key":"e_1_2_7_1_1","first-page":"795","volume":"113","author":"Joannis A.","year":"1891","journal-title":"C.\u2005R. 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