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Compound<jats:bold>2<\/jats:bold>crystallizes in a monoclinic space group<jats:italic>C<\/jats:italic>2\/<jats:italic>c<\/jats:italic>with eight molecules in the unit cell, while compound<jats:bold>4<\/jats:bold>crystallizes in the triclinic space group<jats:italic>P<\/jats:italic>\\overline{1} with two molecules in the unit cell. The crystal lattice of compound<jats:bold>2<\/jats:bold>reveals C\u2014H...Cl<jats:sup>\u2212<\/jats:sup>interactions that are present throughout the entire structure representing head-to-tail contacts between the aromatic (C\u2014H) hydrogens of naphthoquinone and Cl<jats:sup>\u2212<\/jats:sup>counter-ions. Compound<jats:bold>4<\/jats:bold>stacks with the aid of short interactions between a naphthoquinone O atom of one molecule and the mesityl methyl group of another molecule along the<jats:italic>a<\/jats:italic>axis, leading to a one-dimensional strand that is held together by strong \u03c0\u2013\u03b7<jats:sup>2<\/jats:sup>interactions between the imidazolium backbone and the [AuCl<jats:sub>2<\/jats:sub>]<jats:sup>\u2212<\/jats:sup>counter-ion. The bond angles defined by the Au<jats:sup>I<\/jats:sup>atom and two carbene C atoms [C(carbene)\u2014Au\u2014C(carbene)] in compounds<jats:bold>2<\/jats:bold>and<jats:bold>4<\/jats:bold>are nearly rectilinear, with an average value of \u223c174.1\u2005[2]\u00b0. Though<jats:bold>2<\/jats:bold>and<jats:bold>4<\/jats:bold>share the same cation, they differ in their counter-anion, which alters the crystal lattice of the two compounds. The knowledge gleaned from these studies is expected to be useful in understanding the molecular interactions of<jats:bold>2<\/jats:bold>and<jats:bold>4<\/jats:bold>under physiological conditions.<\/jats:p>","DOI":"10.1107\/s2053229619003292","type":"journal-article","created":{"date-parts":[[2019,3,27]],"date-time":"2019-03-27T16:35:21Z","timestamp":1553704521000},"page":"462-468","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":2,"title":["Synthesis and molecular structure of biologically significant bis(1,3-dimesityl-4,5-naphthoquinoimidazol-2-ylidene)gold(I) complexes with chloride and dichloridoaurate counter-ions"],"prefix":"10.1107","volume":"75","author":[{"given":"Jayaraman","family":"Selvakumar","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Meredith H.","family":"Miles","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1343-4345","authenticated-orcid":true,"given":"David A.","family":"Grossie","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kuppuswamy","family":"Arumugam","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"329","published-online":{"date-parts":[[2019,3,26]]},"reference":[{"key":"fn3296_bb1","doi-asserted-by":"crossref","first-page":"1245","DOI":"10.1039\/C5SC03519H","volume":"7","author":"Arambula","year":"2016","journal-title":"Chem. 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