Salts of two pentahalo(N‐donor)bismuthate(III) anions: [BiX5L]2− (X = Cl,Br; L = pyridine, 4‐picoline) |
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Authors: | Sin C James Yvonne G Lawson Nicholas C Norman A Guy Orpen Michael J Quayle |
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Institution: | Siân C. James,Yvonne G. Lawson,Nicholas C. Norman,A. Guy Orpen,Michael J. Quayle |
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Abstract: | Two pentahalo(N‐donor)bismuthate(III) salts, bishydrogen bis(4‐picoline)(1+)] pentabromo(4‐picoline‐N)bismuthate(III), (C12H15N2)2BiBr5(C6H7N)], (I), and bis(pyridinium) pentachloro(pyridine‐N)bismuthate(III), (C5H6N)2BiCl5(C5H5N)], (II), are described which show modest deviations from octahedral geometry at bismuth. In (I), the cations comprise two 4‐picoline molecules sharing a proton and in (II), pyridinium cations are present. The anion in (I) has twofold and that in (II) has mirror crystallographic symmetry. Both structures show a layered packing formed by the anions with the cations between the layers. Ring–ring interactions seem important in (I), whilst in (II), N/C—H?Cl—Bi hydrogen bonding is abundant. |
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