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- W2765628851 abstract "Abstract The crystal structures of the 1:1 proton-transfer compounds of (4-aminophenyl)arsonic acid ( p -arsanilic acid) with the strong organic acids, 2,4,6-trinitrophenol (picric acid), 3,5-dinitrosalicylic acid, (3-carboxy-4-hydroxy)benzenesulfonic acid (5-sulfosalicylic acid) and toluene-4-sulfonic acid have been determined at 200 K and their hydrogen–bonding patterns examined. The compounds are, respectively, anhydrous 4-arsonoanilinium 2,4,6-trinitrophenolate ( 1 ), the hydrate 4-arsonoanilinium 2-carboxy-4,6-dinitrophenolate monohydrate ( 2 ), the hydrate 4-arsonoanilinium (3-carboxy-4-hydroxy)benzenesulfonate monohydrate ( 3 ) and the partial solvate 4-arsonoanilinium toluene-4-sulfonate 0.8 hydrate ( 4 ). The asymmetric unit of 2 , a phenolate, comprises two independent but conformationally similar cation-anion pairs and two water molecules of solvation, and in all compounds, extensive inter-species hydrogen–bonding interactions involving arsono O–H···O and anilinium N–H···O hydrogen–bonds generate three-dimensional supramolecular structures. In the cases of 1 and 2 , the acceptors include phenolate and nitro O-atom acceptors, with 3 and 4 , additionally, sulfonate O-atom acceptors, and with the hydrates 2–4 , the water molecules of solvation. A feature of the hydrogen–bonding in 3 is the presence of primary chains extending along (010) through centrosymmetric cyclic R 2 2 (8) motifs together with conjoined cyclic R 3 4 (12) motifs, which include the water molecule of solvation. The primary hydrogen–bonding in the substructure of 4 involves homomolecular cation–cation arsono O–H···O interactions forming columns down the crystallographic four-fold axis of the unit cell." @default.
- W2765628851 created "2017-11-10" @default.
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- W2765628851 date "2017-10-21" @default.
- W2765628851 modified "2023-09-26" @default.
- W2765628851 title "Proton-transfer compounds featuring the unusual 4-arsonoanilinium cation from the reaction of (4-aminophenyl)arsonic acid with strong organic acids" @default.
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- W2765628851 doi "https://doi.org/10.1515/zkri-2017-2087" @default.
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