{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T14:35:28Z","timestamp":1786977328669,"version":"build-2736575974"},"reference-count":62,"publisher":"Wiley","issue":"22","license":[{"start":{"date-parts":[[2010,4,26]],"date-time":"2010-04-26T00:00:00Z","timestamp":1272240000000},"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":[[2010,6,11]]},"abstract":"Abstract<\/jats:title>\n \n The complexes [Pt(\n t<\/jats:italic>\n Bu\n 3<\/jats:sub>\n tpy){C\uf8fdC(C\n 6<\/jats:sub>\n H\n 4<\/jats:sub>\n C\uf8fdC)\n \n n<\/jats:italic>\n \u22121\n <\/jats:sub>\n R}]\n +<\/jats:sup>\n (\n n<\/jats:italic>\n =1: R=alkyl and aryl (Ar);\n n<\/jats:italic>\n =1\u20133: R=phenyl (Ph) or Ph\u2010N(CH\n 3<\/jats:sub>\n )\n 2<\/jats:sub>\n \u20104;\n n<\/jats:italic>\n =1 and 2, R=Ph\u2010NH\n 2<\/jats:sub>\n \u20104;\n t<\/jats:italic>\n Bu\n 3<\/jats:sub>\n tpy=4,4\u2019,4\u2019\u2019\u2010tri\u2010\n tert<\/jats:italic>\n \u2010butyl\u20102,2\u2019:6\u2019,2\u2019\u2019\u2010terpyridine) and [Pt(Cl\n 3<\/jats:sub>\n tpy)(C\uf8fdCR)]\n +<\/jats:sup>\n (R=\n tert<\/jats:italic>\n \u2010butyl (\n t<\/jats:italic>\n Bu), Ph, 9,9\u2019\u2010dibutylfluorene, 9,9\u2019\u2010dibutyl\u20107\u2010dimethyl\u2010amine\u2010fluorene; Cl\n 3<\/jats:sub>\n tpy=4,4\u2019,4\u2019\u2019\u2010trichloro\u20102,2\u2019:6\u2019,2\u2019\u2019\u2010terpyridine) were prepared. The effects of substituent(s) on the terpyridine (tpy) and acetylide ligands and chain length of arylacetylide ligands on the absorption and emission spectra were examined. Resonance Raman (RR) spectra of [Pt(\n t<\/jats:italic>\n Bu\n 3<\/jats:sub>\n tpy)(C\uf8fdCR)]\n +<\/jats:sup>\n (R=\n n<\/jats:italic>\n \u2010butyl, Ph, and C\n 6<\/jats:sub>\n H\n 4<\/jats:sub>\n \u2010OCH\n 3<\/jats:sub>\n \u20104) obtained in acetonitrile at 298\u2005K reveal that the structural distortion of the C\uf8fdC bond in the electronic excited state obtained by 502.9\u2005nm excitation is substantially larger than that obtained by 416\u2005nm excitation. Density functional theory (DFT) and time\u2010dependent DFT (TDDFT) calculations on [Pt(H\n 3<\/jats:sub>\n tpy)(C\uf8fdCR)]\n +<\/jats:sup>\n (R=\n n<\/jats:italic>\n \u2010propyl (\n n<\/jats:italic>\n Pr), 2\u2010pyridyl (Py)), [Pt(H\n 3<\/jats:sub>\n tpy){C\uf8fdC(C\n 6<\/jats:sub>\n H\n 4<\/jats:sub>\n C\uf8fdC)\n \n n<\/jats:italic>\n \u22121\n <\/jats:sub>\n Ph}]\n +<\/jats:sup>\n (\n n<\/jats:italic>\n =1\u20133), and [Pt(H\n 3<\/jats:sub>\n tpy){C\uf8fdC(C\n 6<\/jats:sub>\n H\n 4<\/jats:sub>\n C\uf8fdC)\n \n n<\/jats:italic>\n \u22121\n <\/jats:sub>\n C\n 6<\/jats:sub>\n H\n 4<\/jats:sub>\n \u2010N(CH\n 3<\/jats:sub>\n )\n 2<\/jats:sub>\n \u20104}]\n +<\/jats:sup>\n \/+H\n +<\/jats:sup>\n (\n n<\/jats:italic>\n =1\u20133; H\n 3<\/jats:sub>\n tpy=nonsubstituted terpyridine) at two different conformations were performed, namely, with the phenyl rings of the arylacetylide ligands coplanar (\u201ccop\u201d) with and perpendicular (\u201cper\u201d) to the H\n 3<\/jats:sub>\n tpy ligand. Combining the experimental data and calculated results, the two lowest energy absorption peak maxima,\n \u03bb<\/jats:italic>\n 1<\/jats:sub>\n and\n \u03bb<\/jats:italic>\n 2<\/jats:sub>\n , of [Pt(Y\n 3<\/jats:sub>\n tpy)(C\uf8fdCR)]\n +<\/jats:sup>\n (Y=\n t<\/jats:italic>\n Bu or Cl, R=aryl) are attributed to\n 1<\/jats:sup>\n [\u03c0(C\uf8fdCR)\u2192\u03c0*(Y\n 3<\/jats:sub>\n tpy)] in the \u201ccop\u201d conformation and mixed\n 1<\/jats:sup>\n [d\n \u03c0<\/jats:sub>\n (Pt)\u2192\u03c0*(Y\n 3<\/jats:sub>\n tpy)]\/\n 1<\/jats:sup>\n [\u03c0(C\uf8fdCR)\u2192\u03c0*(Y\n 3<\/jats:sub>\n tpy)] transitions in the \u201cper\u201d conformation. The lowest energy absorption peak\n \u03bb<\/jats:italic>\n 1<\/jats:sub>\n for [Pt(\n t<\/jats:italic>\n Bu\n 3<\/jats:sub>\n tpy){C\uf8fdC(C\n 6<\/jats:sub>\n H\n 4<\/jats:sub>\n C\uf8fdC)\n \n n<\/jats:italic>\n \u22121\n <\/jats:sub>\n C\n 6<\/jats:sub>\n H\n 4<\/jats:sub>\n \u2010H\u20104}]\n +<\/jats:sup>\n (\n n<\/jats:italic>\n =1\u20133) shows a redshift with increasing chain length. However, for [Pt(tBu\n 3<\/jats:sub>\n tpy){C\uf8fdC(C6H4C\uf8fdC)\n \n n<\/jats:italic>\n \u22121\n <\/jats:sub>\n C\n 6<\/jats:sub>\n H\n 4<\/jats:sub>\n \u2010N(CH\n 3<\/jats:sub>\n )\n 2<\/jats:sub>\n \u20104}]\n +<\/jats:sup>\n (\n n<\/jats:italic>\n =1\u20133),\n \u03bb<\/jats:italic>\n 1<\/jats:sub>\n shows a blueshift with increasing chain length\n n<\/jats:italic>\n , but shows a redshift after the addition of acid. The emissions of [Pt(Y\n 3<\/jats:sub>\n tpy)(C\uf8fdCR)]\n +<\/jats:sup>\n (Y=\n t<\/jats:italic>\n Bu or Cl) at 524\u2013642\u2005nm measured in dichloromethane at 298\u2005K are assigned to the\n 3<\/jats:sup>\n [\u03c0(C\uf8fdCAr)\u2192\u03c0*(Y\n 3<\/jats:sub>\n tpy)] excited states and mixed\n 3<\/jats:sup>\n [d\n \u03c0<\/jats:sub>\n (Pt)\u2192\u03c0*(Y\n 3<\/jats:sub>\n tpy)]\/\n 3<\/jats:sup>\n [\u03c0(C\uf8fdC)\u2192\u03c0*(Y\n 3<\/jats:sub>\n tpy)] excited states for R=aryl and alkyl groups, respectively. [Pt(tBu\n 3<\/jats:sub>\n tpy){C\uf8fdC(C\n 6<\/jats:sub>\n H\n 4<\/jats:sub>\n C\uf8fdC)\n \n n<\/jats:italic>\n \u22121\n <\/jats:sub>\n C\n 6<\/jats:sub>\n H\n 4<\/jats:sub>\n \u2010N(CH\n 3<\/jats:sub>\n )\n 2<\/jats:sub>\n \u20104}]\n +<\/jats:sup>\n (\n n<\/jats:italic>\n =1 and 2) are nonemissive, and this is attributed to the small energy gap between the singlet ground state (S\n 0<\/jats:sub>\n ) and the lowest triplet excited state (T\n 1<\/jats:sub>\n ).\n <\/jats:p>","DOI":"10.1002\/chem.200903046","type":"journal-article","created":{"date-parts":[[2010,4,28]],"date-time":"2010-04-28T02:12:53Z","timestamp":1272420773000},"page":"6540-6554","source":"Crossref","is-referenced-by-count":44,"title":["Ligand\u2010to\u2010Ligand Charge\u2010Transfer Transitions of Platinum(II) Complexes with Arylacetylide Ligands with Different Chain Lengths: Spectroscopic Characterization, Effect of Molecular Conformations, and Density Functional Theory Calculations"],"prefix":"10.1002","volume":"16","author":[{"given":"Glenna\u2005So\u2005Ming","family":"Tong","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuen\u2010Chi","family":"Law","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven\u2005C.\u2005F.","family":"Kui","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nianyong","family":"Zhu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"King Hong","family":"Leung","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David Lee","family":"Phillips","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chi\u2010Ming","family":"Che","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2010,6,2]]},"reference":[{"key":"e_1_2_7_1_2","unstructured":"\u00a0"},{"key":"e_1_2_7_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ccr.2007.02.003"},{"key":"e_1_2_7_3_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic049079p"},{"key":"e_1_2_7_4_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic801769v"},{"key":"e_1_2_7_5_2","doi-asserted-by":"publisher","DOI":"10.1021\/jp072187n"},{"key":"e_1_2_7_6_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic052045c"},{"key":"e_1_2_7_7_2","doi-asserted-by":"publisher","DOI":"10.1002\/ejic.200400533"},{"key":"e_1_2_7_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.theochem.2008.05.023"},{"key":"e_1_2_7_9_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic048573q"},{"key":"e_1_2_7_10_2","doi-asserted-by":"publisher","DOI":"10.1039\/b900282k"},{"key":"e_1_2_7_11_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.200800394"},{"key":"e_1_2_7_12_2","unstructured":"\u00a0"},{"key":"e_1_2_7_13_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic049266n"},{"key":"e_1_2_7_14_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.1544438"},{"key":"e_1_2_7_15_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic900069r"},{"key":"e_1_2_7_16_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic0618652"},{"key":"e_1_2_7_17_2","doi-asserted-by":"publisher","DOI":"10.1039\/b603603a"},{"key":"e_1_2_7_18_2","unstructured":"\u00a0"},{"key":"e_1_2_7_19_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.200600769"},{"key":"e_1_2_7_20_2","doi-asserted-by":"publisher","DOI":"10.1002\/ejic.200300878"},{"key":"e_1_2_7_21_2","doi-asserted-by":"publisher","DOI":"10.1021\/om034379k"},{"key":"e_1_2_7_22_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja0209417"},{"key":"e_1_2_7_23_2","unstructured":"\u00a0"},{"key":"e_1_2_7_24_2","doi-asserted-by":"publisher","DOI":"10.1021\/jp056663q"},{"key":"e_1_2_7_25_2","doi-asserted-by":"publisher","DOI":"10.1063\/1.1924450"},{"key":"e_1_2_7_26_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja053076"},{"key":"e_1_2_7_27_2","doi-asserted-by":"publisher","DOI":"10.1002\/1521-3765(20011001)7:19<4180::AID-CHEM4180>3.0.CO;2-9"},{"key":"e_1_2_7_28_2","doi-asserted-by":"publisher","DOI":"10.1021\/ic990446k"},{"key":"e_1_2_7_29_2","unstructured":"\u00a0"},{"key":"e_1_2_7_30_2","doi-asserted-by":"publisher","DOI":"10.1002\/ejoc.200600103"},{"key":"e_1_2_7_31_2","doi-asserted-by":"publisher","DOI":"10.1039\/a705889f"},{"key":"e_1_2_7_32_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-1693(01)00420-0"},{"key":"e_1_2_7_33_2","unstructured":"CCDC\u2010752736 (2\u2009a) 752737 (4) 752738 (5\u22c52\u2009CH3CN) 752739 (6\u22c5CH3CN) 752740 (7\u2009a\u22c52\u2009CH3CN) 752741 (9\u22c52\u2009CH3CN) 752742 (10\u22c52\u2009CH3CN) and 752743 (11\u22c52\u2009CH3CN) contain the supplementary crystallographic data for this paper. 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