{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,5]],"date-time":"2025-10-05T12:33:56Z","timestamp":1759667636773,"version":"3.37.3"},"reference-count":19,"publisher":"International Union of Crystallography (IUCr)","issue":"5","license":[{"start":{"date-parts":[[2020,4,17]],"date-time":"2020-04-17T00:00:00Z","timestamp":1587081600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"},{"start":{"date-parts":[[2020,4,17]],"date-time":"2020-04-17T00:00:00Z","timestamp":1587081600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/legalcode"}],"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":[[2020,3,31]]},"published-print":{"date-parts":[[2020,5,1]]},"abstract":"<jats:p>The compound poly[2-hydroxy-<jats:italic>N<\/jats:italic>-methylethan-1-aminium [\u03bc<jats:sub>3<\/jats:sub>-cyanido-\u03ba<jats:sup>3<\/jats:sup>\n                  <jats:italic>C<\/jats:italic>:<jats:italic>C<\/jats:italic>:<jats:italic>N<\/jats:italic>-di-\u03bc-cyanido-\u03ba<jats:sup>4<\/jats:sup>\n                  <jats:italic>C<\/jats:italic>:<jats:italic>N<\/jats:italic>-dicuprate(I)]], {(C<jats:sub>3<\/jats:sub>H<jats:sub>10<\/jats:sub>NO)[Cu<jats:sub>2<\/jats:sub>(CN)<jats:sub>3<\/jats:sub>]}<jats:sub>\n                     <jats:italic>n<\/jats:italic>\n                  <\/jats:sub> or [meoenH]Cu<jats:sub>2<\/jats:sub>(CN)<jats:sub>3<\/jats:sub>, crystallizes in the tetragonal space group <jats:italic>P<\/jats:italic>4<jats:sub>3<\/jats:sub>. The structure consists of a three-dimensional (3D) anionic Cu<jats:sup>I<\/jats:sup>CN network with noncoordinated protonated <jats:italic>N<\/jats:italic>-methylethanolamine cations providing charge neutrality. Pairs of cuprophilic Cu atoms are bridged by the C atoms of \u03bc<jats:sub>3<\/jats:sub>-cyanide ligands, which link these units into a 4<jats:sub>3<\/jats:sub> spiral along the <jats:italic>c<\/jats:italic> axis. The spirals are linked together into a 3D anionic network by the two other cyanide groups. The cationic moieties are linked into their own 4<jats:sub>3<\/jats:sub> spiral <jats:italic>via<\/jats:italic> N\u2014H...O and O\u2014H...O hydrogen bonds, and the cations interact with the 3D network <jats:italic>via<\/jats:italic> an unusual pair of N\u2014H...N hydrogen bonds to one of the \u03bc<jats:sub>2<\/jats:sub>-cyanide groups. Thermogravimetric analysis indicates an initial loss of the base cation and one cyanide as HCN at temperatures in the range 130\u2013250\u2005\u00b0C to form CuCN. We show how loss of a specific cyanide group from the 3D CuCN structure could form the linear CuCN structure. Further heating leaves a residue of elemental copper, isolated as the oxide.<\/jats:p>","DOI":"10.1107\/s2053229620004477","type":"journal-article","created":{"date-parts":[[2020,4,17]],"date-time":"2020-04-17T09:13:51Z","timestamp":1587114831000},"page":"405-411","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":4,"title":["Synthesis, decomposition studies and crystal structure of a three-dimensional CuCN network structure with protonated <i>N<\/i>-methylethanolamine as the guest cation"],"prefix":"10.1107","volume":"76","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2870-1509","authenticated-orcid":true,"given":"Christopher","family":"Koenigsmann","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Leena N.","family":"Rachid","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christina M.","family":"Sheedy","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9548-5850","authenticated-orcid":true,"given":"Peter W. 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