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Merkens"]}]}],"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"],"accepted":{"date-parts":[[2017,8,2]]},"published-print":{"date-parts":[[2017,9,1]]},"abstract":"<jats:p>3-(Pyridin-4-yl)acetylacetone (HacacPy) acts as a pyridine-type ligand towards Cd<jats:sup>II<\/jats:sup> and Hg<jats:sup>II<\/jats:sup> halides. With CdBr<jats:sub>2<\/jats:sub>, the one-dimensional polymer [Cd(\u03bc-Br)<jats:sub>2<\/jats:sub>(HacacPy)Cd(\u03bc-Br)<jats:sub>2<\/jats:sub>(HacacPy)<jats:sub>2<\/jats:sub>]<jats:sub>\u221e<\/jats:sub> is obtained in which five- and six-coordinated Cd<jats:sup>II<\/jats:sup> cations alternate in the chain direction. Reaction of HacacPy with HgBr<jats:sub>2<\/jats:sub> results in [Hg(\u03bc-Br)Br(HacacPy)]<jats:sub>\u221e<\/jats:sub>, a polymer in which each Hg<jats:sup>II<\/jats:sup> centre is tetracoordinated. In both compounds, each metal(II) cation is <jats:italic>N<\/jats:italic>-coordinated by at least one HacacPy ligand. Equimolar reaction between these Cd<jats:sup>II<\/jats:sup> and Hg<jats:sup>II<\/jats:sup> derivatives, either conducted in ethanol as solvent or <jats:italic>via<\/jats:italic> grinding in the solid state, leads to ligand redistribution and the formation of the well-ordered bimetallic polymer <jats:italic>catena<\/jats:italic>-poly[[bromidomercury(II)]-\u03bc-bromido-[aquabis[4-hydroxy-3-(pyridin-4-yl)pent-3-en-2-one]cadmium(II)]-di-\u03bc-bromido], [CdHgBr<jats:sub>4<\/jats:sub>(C<jats:sub>10<\/jats:sub>H<jats:sub>11<\/jats:sub>NO<jats:sub>2<\/jats:sub>)<jats:sub>2<\/jats:sub>(H<jats:sub>2<\/jats:sub>O)]<jats:sub>\n                     <jats:italic>n<\/jats:italic>\n                  <\/jats:sub> or [{HgBr}(\u03bc-Br){(HacacPy)<jats:sub>2<\/jats:sub>Cd(H<jats:sub>2<\/jats:sub>O)}(\u03bc-Br)<jats:sub>2<\/jats:sub>]<jats:sub>\u221e<\/jats:sub>. Hg<jats:sup>II<\/jats:sup> and Cd<jats:sup>II<\/jats:sup> cations alternate in the [100] direction. The HacacPy ligands do not bind to the Hg<jats:sup>II<\/jats:sup> cations, which are tetracoordinated by three bridging and one terminal bromide ligand. The Cd<jats:sup>II<\/jats:sup> centres adopt an only slightly distorted octahedral coordination. Three bromide ligands link them in a (2\u00a0+\u00a01) pattern to neighbouring Hg<jats:sup>II<\/jats:sup> atoms; two HacacPy ligands in a <jats:italic>cis<\/jats:italic> configuration, acting as N-atom donors, and a terminal aqua ligand complete the coordination sphere. Classical O\u2014H...Br hydrogen bonds stabilize the polymeric chain. O\u2014H...O hydrogen bonds between aqua H atoms and the uncoordinated carbonyl group of an HacacPy ligand in a neighbouring strand in the <jats:italic>c<\/jats:italic> direction link the chains into layers in the (010) plane.<\/jats:p>","DOI":"10.1107\/s2053229617011408","type":"journal-article","created":{"date-parts":[[2017,8,14]],"date-time":"2017-08-14T15:30:46Z","timestamp":1502724646000},"page":"724-730","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":5,"title":["3-(Pyridin-4-yl)acetylacetone: Cd<sup>II<\/sup> and Hg<sup>II<\/sup> compete for nitrogen coordination"],"prefix":"10.1107","volume":"73","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0774-5964","authenticated-orcid":true,"given":"Khai-Nghi","family":"Truong","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carina","family":"Merkens","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2623-0061","authenticated-orcid":true,"given":"Ulli","family":"Englert","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2017,8,14]]},"reference":[{"key":"yf3124_bb1","doi-asserted-by":"crossref","first-page":"1947","DOI":"10.1039\/DT9960001947","author":"Batsanov","year":"1996","journal-title":"J. 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