{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,3]],"date-time":"2026-11-03T21:38:30Z","timestamp":1793741910876,"version":"4.6.1"},"reference-count":22,"publisher":"International Union of Crystallography (IUCr)","issue":"4","license":[{"start":{"date-parts":[[2017,3,8]],"date-time":"2017-03-08T00:00:00Z","timestamp":1488931200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/journals.iucr.org\/services\/copyrightpolicy.html"},{"start":{"date-parts":[[2017,3,8]],"date-time":"2017-03-08T00:00:00Z","timestamp":1488931200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.iucr.org\/services\/copyrightpolicy.html#TDM"}],"content-domain":{"domain":["iucr.org","wiley.com","iucrj.org"],"crossmark-restriction":true},"short-container-title":["Acta Crystallogr C Struct Chem","Acta Crystallogr C","Acta Crystallogr C Cryst Struct Commun","Acta Cryst C","Acta Cryst C Struct Chem","Acta Cryst Sect C","Acta Cryst Sect C Struct Chem","Acta Crystallogr Sect C","Acta Crystallogr Sect C Struct Chem","Acta Crystallogr Sect C Cryst Struct Commun"],"published-print":{"date-parts":[[2017,4,1]]},"abstract":"<jats:p>Structures having the unusual protonated 4-arsonoanilinium species, namely in the hydrochloride salt, C<jats:sub>6<\/jats:sub>H<jats:sub>9<\/jats:sub>AsNO<jats:sub>3<\/jats:sub>\n                  <jats:sup>+<\/jats:sup>\u00b7Cl<jats:sup>\u2212<\/jats:sup>, (I), and the complex salts formed from the reaction of (4-aminophenyl)arsonic acid (<jats:italic>p<\/jats:italic>-arsanilic acid) with copper(II) sulfate, <jats:italic>i.e.<\/jats:italic> hexaaquacopper(II) bis(4-arsonoanilinium) disulfate dihydrate, (C<jats:sub>6<\/jats:sub>H<jats:sub>9<\/jats:sub>AsNO<jats:sub>3<\/jats:sub>)<jats:sub>2<\/jats:sub>[Cu(H<jats:sub>2<\/jats:sub>O)<jats:sub>6<\/jats:sub>](SO<jats:sub>4<\/jats:sub>)<jats:sub>2<\/jats:sub>\u00b72H<jats:sub>2<\/jats:sub>O, (II), with copper(II) chloride, <jats:italic>i.e.<\/jats:italic> poly[bis(4-arsonoanilinium) [tetra-\u03bc-chlorido-cuprate(II)]], {(C<jats:sub>6<\/jats:sub>H<jats:sub>9<\/jats:sub>AsNO<jats:sub>3<\/jats:sub>)<jats:sub>2<\/jats:sub>[CuCl<jats:sub>4<\/jats:sub>]}<jats:sub>\n                     <jats:italic>n<\/jats:italic>\n                  <\/jats:sub>, (III), and with cadmium chloride, <jats:italic>i.e.<\/jats:italic> poly[bis(4-arsonoanilinium) [tetra-\u03bc-chlorido-cadmate(II)]], {(C<jats:sub>6<\/jats:sub>H<jats:sub>9<\/jats:sub>AsNO<jats:sub>3<\/jats:sub>)<jats:sub>2<\/jats:sub>[CdCl<jats:sub>4<\/jats:sub>]}<jats:sub>\n                     <jats:italic>n<\/jats:italic>\n                  <\/jats:sub>, (IV), have been determined. In (II), the two 4-arsonoanilinium cations are accompanied by [Cu(H<jats:sub>2<\/jats:sub>O)<jats:sub>6<\/jats:sub>]<jats:sup>2+<\/jats:sup> cations with sulfate anions. In the isotypic complex salts (III) and (IV), they act as counter-cations to the {[CuCl<jats:sub>4<\/jats:sub>]<jats:sup>2\u2212<\/jats:sup>}<jats:sub>\n                     <jats:italic>n<\/jats:italic>\n                  <\/jats:sub> or {[CdCl<jats:sub>4<\/jats:sub>]<jats:sup>2\u2212<\/jats:sup>}<jats:sub>\n                     <jats:italic>n<\/jats:italic>\n                  <\/jats:sub> anionic polymer sheets, respectively. In (II), the [Cu(H<jats:sub>2<\/jats:sub>O)<jats:sub>6<\/jats:sub>]<jats:sup>2+<\/jats:sup> ion sits on a crystallographic centre of symmetry and displays a slightly distorted octahedral coordination geometry. The asymmetric unit for (II) contains, in addition to half the [Cu(H<jats:sub>2<\/jats:sub>O)<jats:sub>6<\/jats:sub>]<jats:sup>2+<\/jats:sup> ion, one 4-arsonoanilinium cation, a sulfate dianion and a solvent water molecule. Extensive O\u2014H...O and N\u2014H...O hydrogen bonds link all the species, giving an overall three-dimensional structure. In (III), four of the chloride ligands are related by inversion [Cu\u2014Cl = 2.2826\u2005(8) and 2.2990\u2005(9)\u2005\u00c5], with the other two sites of the tetragonally distorted octahedral CuCl<jats:sub>6<\/jats:sub> unit occupied by symmetry-generated Cl-atom donors [Cu\u2014Cl = 2.9833\u2005(9)\u2005\u00c5], forming a two-dimensional coordination polymer network substructure lying parallel to (001). In the crystal, the polymer layers are linked across [001] by a number of bridging hydrogen bonds involving N\u2014H...Cl interactions from head-to-head-linked As\u2014O\u2014H...O 4-arsonoanilinium cations. A three-dimensional network structure is formed. Cd<jats:sup>II<\/jats:sup> compound (IV) is isotypic with Cu<jats:sup>II<\/jats:sup> complex (III), but with the central CdCl<jats:sub>6<\/jats:sub> complex repeat unit having a more regular <jats:italic>M<\/jats:italic>\u2014Cl bond-length range [2.5232\u2005(12)\u20132.6931\u2005(10)\u2005\u00c5] compared to that in (III). This series of compounds represents the first reported crystal structures having the protonated 4-arsonoanilinium species.<\/jats:p>","DOI":"10.1107\/s205322961700314x","type":"journal-article","created":{"date-parts":[[2017,3,8]],"date-time":"2017-03-08T10:53:36Z","timestamp":1488970416000},"page":"325-330","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":2,"title":["Unusual 4-arsonoanilinium cationic species in the hydrochloride salt of (4-aminophenyl)arsonic acid and formed in the reaction of the acid with copper(II) sulfate, copper(II) chloride and cadmium chloride"],"prefix":"10.1107","volume":"73","author":[{"given":"Graham","family":"Smith","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Urs D.","family":"Wermuth","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"329","published-online":{"date-parts":[[2017,3,8]]},"reference":[{"key":"ky3114_bb1","doi-asserted-by":"crossref","first-page":"343","DOI":"10.1107\/S0021889892010331","volume":"26","author":"Altomare","year":"1993","journal-title":"J. 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