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- W2556560417 abstract "The structures of three solvated monovalent cation salts of the superweak anion B12F122- (Y2-), K2(SO2)6Y, Ag2(SO2)6Y, and Ag2(H2O)4Y, are reported and discussed with respect to previously reported structures of Ag+ and K+ with other weakly coordinating anions. The structures of K2(SO2)6Y and Ag2(SO2)6Y are isomorphous and are based on expanded cubic close-packed arrays of Y2- anions with M(OSO)6+ complexes centered in the trigonal holes of one expanded close-packed layer of B12 centroids (⊙). The K+ and Ag+ ions have virtually identical bicapped trigonal prism MO6F2 coordination spheres, with M-O distances of 2.735(1)-3.032(2) Å for the potassium salt and 2.526(5)-2.790(5) Å for the silver salt. Each M(OSO)6+ complex is connected to three other cationic complexes through their six μ-SO2-κ1O,κ2O' ligands. The structure of Ag2(H2O)4Y is unique [different from that of K2(H2O)4Y]. Planes of close-packed arrays of anions are offset from neighboring planes along only one of the linear ⊙···⊙···⊙ directions of the close-packed arrays, with [Ag(μ-H2O)2Ag(μ-H2O)2)]∞ infinite chains between the planes of anions. There are two nearly identical AgO4F2 coordination spheres, with Ag-O distances of 2.371(5)-2.524(5) Å and Ag-F distances of 2.734(4)-2.751(4) Å. This is only the second structurally characterized compound with four H2O molecules coordinated to a Ag+ ion in the solid state. Comparisons with crystalline H2O and SO2 solvates of other Ag+ and K+ salts of weakly coordinating anions show that (i) N[(SO2)2(1,2-C6H4)]-, BF4-, SbF6-, and Al(OC(CF3)3)4- coordinate much more strongly to Ag+ than does Y2-, (ii) SnF62- coordinates somewhat more strongly to K+ than does Y2-, and (iii) B12Cl122- coordinates to K+ about the same as, if not slightly weaker than, Y2-." @default.
- W2556560417 created "2016-11-30" @default.
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- W2556560417 date "2016-11-14" @default.
- W2556560417 modified "2023-10-18" @default.
- W2556560417 title "Structures of M<sub>2</sub>(SO<sub>2</sub>)<sub>6</sub>B<sub>12</sub>F<sub>12</sub> (M = Ag or K) and Ag<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub>B<sub>12</sub>F<sub>12</sub>: Comparison of the Coordination of SO<sub>2</sub> versus H<sub>2</sub>O and of B<sub>12</sub>F<sub>12</sub><sup>2–</sup> versus Other Weakly Coordinating Anions to Metal Ions in the Solid State" @default.
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- W2556560417 doi "https://doi.org/10.1021/acs.inorgchem.6b01980" @default.
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