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Seven mononuclear transition metal complexes with different structural forms, namely aquabis[3-(4-methylphenyl)-5-(pyridin-2-yl)-1<jats:italic>H<\/jats:italic>-1,2,4-triazolato-\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>N<\/jats:italic>\n                  <jats:sup>1<\/jats:sup>,<jats:italic>N<\/jats:italic>\n                  <jats:sup>5<\/jats:sup>]zinc(II), [Zn(C<jats:sub>14<\/jats:sub>H<jats:sub>11<\/jats:sub>N<jats:sub>4<\/jats:sub>)<jats:sub>2<\/jats:sub>(H<jats:sub>2<\/jats:sub>O)], (I), bis[5-(4-methylphenyl)-3-(pyridin-2-yl)-1<jats:italic>H<\/jats:italic>-1,2,4-triazole-\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>N<\/jats:italic>\n                  <jats:sup>3<\/jats:sup>,<jats:italic>N<\/jats:italic>\n                  <jats:sup>4<\/jats:sup>]bis(nitrato-\u03ba<jats:italic>O<\/jats:italic>)zinc(II), [Zn(NO<jats:sub>3<\/jats:sub>)<jats:sub>2<\/jats:sub>(C<jats:sub>14<\/jats:sub>H<jats:sub>12<\/jats:sub>N<jats:sub>4<\/jats:sub>)<jats:sub>2<\/jats:sub>], (II), bis(methanol-\u03ba<jats:italic>O<\/jats:italic>)bis[3-(4-methylphenyl)-5-(pyridin-2-yl)-1<jats:italic>H<\/jats:italic>-1,2,4-triazolato-\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>N<\/jats:italic>\n                  <jats:sup>1<\/jats:sup>,<jats:italic>N<\/jats:italic>\n                  <jats:sup>5<\/jats:sup>]zinc(II), [Zn(C<jats:sub>14<\/jats:sub>H<jats:sub>11<\/jats:sub>N<jats:sub>4<\/jats:sub>)<jats:sub>2<\/jats:sub>(CH<jats:sub>4<\/jats:sub>O)<jats:sub>2<\/jats:sub>], (III), diiodidobis[5-(4-methylphenyl)-3-(pyridin-2-yl)-1<jats:italic>H<\/jats:italic>-1,2,4-triazole-\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>N<\/jats:italic>\n                  <jats:sup>3<\/jats:sup>,<jats:italic>N<\/jats:italic>\n                  <jats:sup>4<\/jats:sup>]cadmium(II), [CdI<jats:sub>2<\/jats:sub>(C<jats:sub>14<\/jats:sub>H<jats:sub>12<\/jats:sub>N<jats:sub>4<\/jats:sub>)<jats:sub>2<\/jats:sub>], (IV), bis[5-(4-methylphenyl)-3-(pyridin-2-yl)-1<jats:italic>H<\/jats:italic>-1,2,4-triazole-\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>N<\/jats:italic>\n                  <jats:sup>3<\/jats:sup>,<jats:italic>N<\/jats:italic>\n                  <jats:sup>4<\/jats:sup>]bis(nitrato-\u03ba<jats:italic>O<\/jats:italic>)cadmium(II), [Cd(NO<jats:sub>3<\/jats:sub>)<jats:sub>2<\/jats:sub>(C<jats:sub>14<\/jats:sub>H<jats:sub>12<\/jats:sub>N<jats:sub>4<\/jats:sub>)<jats:sub>2<\/jats:sub>], (V), aquabis[3-(4-methylphenyl)-5-(pyridin-2-yl)-1<jats:italic>H<\/jats:italic>-1,2,4-triazolato-\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>N<\/jats:italic>\n                  <jats:sup>1<\/jats:sup>,<jats:italic>N<\/jats:italic>\n                  <jats:sup>5<\/jats:sup>]cobalt(II), [Co(C<jats:sub>14<\/jats:sub>H<jats:sub>11<\/jats:sub>N<jats:sub>4<\/jats:sub>)<jats:sub>2<\/jats:sub>(H<jats:sub>2<\/jats:sub>O)], (VI), and diaquabis[3-(4-methylphenyl)-5-(pyridin-2-yl)-1<jats:italic>H<\/jats:italic>-1,2,4-triazolato-\u03ba<jats:sup>2<\/jats:sup>\n                  <jats:italic>N<\/jats:italic>\n                  <jats:sup>1<\/jats:sup>,<jats:italic>N<\/jats:italic>\n                  <jats:sup>5<\/jats:sup>]nickel(II), [Ni(C<jats:sub>14<\/jats:sub>H<jats:sub>11<\/jats:sub>N<jats:sub>4<\/jats:sub>)<jats:sub>2<\/jats:sub>(H<jats:sub>2<\/jats:sub>O)<jats:sub>2<\/jats:sub>], (VII), have been prepared by the reaction of transition metal salts (Zn<jats:sup>II<\/jats:sup>, Cd<jats:sup>II<\/jats:sup>, Co<jats:sup>II<\/jats:sup> and Ni<jats:sup>II<\/jats:sup>) with 3-(4-methylphenyl)-5-(pyridin-2-yl)-1<jats:italic>H<\/jats:italic>-1,2,4-triazole (pymphtzH) under either ambient or hydrothermal conditions. These compounds have been characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. All the complexes form three-dimensional supramolecular structures through hydrogen bonds or through \u03c0\u2013\u03c0 stacking interactions between the centroids of the pyridyl or arene rings. The pymphtzH and pymphtz<jats:sup>\u2212<\/jats:sup> entities act as bidentate coordinating ligands in each structure. Moreover, all the pyridyl N atoms are coordinated to metal atoms (Zn, Cd, Co or Ni). The N atom in the 4-position of the triazole group is coordinated to the Zn and Cd atoms in the crystal structures of (II), (IV) and (V), while the N atom in the 1-position of the triazolate group is coordinated to the Zn, Co and Ni atoms in (I), (III), (VI) and (VII).<\/jats:p>","DOI":"10.1107\/s2053229617004697","type":"journal-article","created":{"date-parts":[[2017,4,11]],"date-time":"2017-04-11T10:11:18Z","timestamp":1491905478000},"page":"382-392","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":3,"title":["Synthesis, crystal structures and luminescence properties of seven mononuclear zinc(II), cadmium(II), cobalt(II) and nickel(II) complexes with 5-(4-methylphenyl)-3-(pyridin-2-yl)-1<i>H<\/i>-1,2,4-triazole"],"prefix":"10.1107","volume":"73","author":[{"given":"Feng-Yi","family":"Liu","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dong-Mei","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiao-Lan","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2091-5991","authenticated-orcid":true,"given":"Jun-Feng","family":"Kou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2017,4,11]]},"reference":[{"key":"lf3051_bb1","doi-asserted-by":"crossref","first-page":"2185","DOI":"10.1039\/b716650h","author":"Barbieri","year":"2008","journal-title":"Chem. 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