{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,20]],"date-time":"2026-09-20T11:35:59Z","timestamp":1789904159513,"version":"4.0.1"},"reference-count":79,"publisher":"Wiley","issue":"19","license":[{"start":{"date-parts":[[2004,8,20]],"date-time":"2004-08-20T00:00:00Z","timestamp":1092960000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2004,10,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Novel anionic dialkyl, diaryl, and dihydride platinum(<jats:sc>II<\/jats:sc>) complexes based on the new \u201clong\u2010arm\u201d hemilabile PCN\u2010type ligand C<jats:sub>6<\/jats:sub>H<jats:sub>4<\/jats:sub>[CH<jats:sub>2<\/jats:sub>P(<jats:italic>t<\/jats:italic>Bu)<jats:sub>2<\/jats:sub>](CH<jats:sub>2<\/jats:sub>)<jats:sub>2<\/jats:sub>N(CH<jats:sub>3<\/jats:sub>)<jats:sub>2<\/jats:sub> with the general formula Li<jats:sup>+<\/jats:sup>[Pt(PCN)(R)<jats:sub>2<\/jats:sub>]<jats:sup>\u2212<\/jats:sup> (R=Me (<jats:bold>4<\/jats:bold>), Ph (<jats:bold>6<\/jats:bold>) and H (<jats:bold>9<\/jats:bold>)) were prepared by reaction of [Pt(PCN)(R)] complexes (obtained from the corresponding chlorides) with an equivalent of RLi, as a result of the opening of the chelate ring. Alkylating agents based on other metals produce less stable products. These anionic d<jats:sup>8<\/jats:sup> complexes are thermally stable although they bear no stabilizing \u03c0 acceptors. They were characterized by <jats:sup>1<\/jats:sup>H, <jats:sup>31<\/jats:sup>P{<jats:sup>1<\/jats:sup>H}, <jats:sup>13<\/jats:sup>C, and <jats:sup>7<\/jats:sup>Li NMR spectroscopy; complex <jats:bold>9<\/jats:bold> was also characterized by single crystal X\u2010ray crystallography, showing that the Li <jats:sup>+<\/jats:sup> ion is coordinated to the nitrogen atom of the open amine arm and to the hydride ligand (<jats:italic>trans<\/jats:italic> to the P atom) of a neighboring molecule (H\uf8ffLi=2.15 \u00c5), resulting in a dimeric structure. Complexes <jats:bold>4<\/jats:bold> and <jats:bold>9<\/jats:bold> exhibit high nucleophilic reactivity, upon which the pincer complex is regenerated. Reaction of <jats:bold>4<\/jats:bold> with water, methyl iodide, and iodobenzene resulted in the neutral complex [Pt(PCN)(CH<jats:sub>3<\/jats:sub>)] (<jats:bold>3<\/jats:bold>) and methane, ethane, or toluene, respectively. Labeling studies indicate that the reaction proceeds by direct electrophilic attack on the metal center, rather than attack on the alkyl ligand. The anionic dihydride complex <jats:bold>9<\/jats:bold> reacted with water and methyl iodide to yield [Pt(PCN)(H)] (<jats:bold>8<\/jats:bold>) and H<jats:sub>2<\/jats:sub> or methane, respectively.<\/jats:p>","DOI":"10.1002\/chem.200400514","type":"journal-article","created":{"date-parts":[[2004,8,20]],"date-time":"2004-08-20T14:19:42Z","timestamp":1093011582000},"page":"4673-4684","source":"Crossref","is-referenced-by-count":73,"title":["Nucleophilic De\u2010coordination and Electrophilic Regeneration of \u201cHemilabile\u201d Pincer\u2010Type Complexes: Formation of Anionic Dialkyl, Diaryl, and Dihydride Pt<sup>II<\/sup> Complexes Bearing No Stabilizing \u03c0\u2010Acceptors"],"prefix":"10.1002","volume":"10","author":[{"given":"Elena","family":"Poverenov","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark","family":"Gandelman","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Linda J. 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