148643 20250120165542.0 doi 10.1021/om200589q sideral 78617 ART-2012-78617 eng Fuertes, S. Universidad de Zaragoza (orcid)0000-0003-1812-3175 New C¿N¿C Bis-Cyclometalated Platinum(II) Complexes: Synthesis, Structures, and Photophysical Properties 2012 The reaction of a new ligand, ethyl 2,6-diphenylisonicotinate (EtO2C–C∧N∧C–H2), with K2PtCl4 in acetic acid affords the monocyclometalated complex [{(EtO2C–C∧N∧C–H)Pt(μ-Cl)}2] (1), which transforms to the bis-cyclometalated derivative [Pt(EtO2C–C∧N∧C)(DMSO)] (2) when heated in hot DMSO. Complex 2 is the precursor for preparing a new series of neutral mononuclear bis-cyclometalated complexes [Pt(EtO2C–C∧N∧C)(L)] (L = tht (3), PPh3 (4), CN-tBu (5), py (6), py-tBu (7), py-NH2 (8), py-CN (9), py-CONH2 (10)). These new complexes have been characterized spectroscopically, and structures of 2–10 have been determined crystallographically. Within each crystal structure the individual molecules pack in a head-to-tail arrangement. Noncovalent interactions, including π···π, C–H···O, C–H···N, N–H···Pt, N–H···π, C–H···π, and N–H···O, contribute significantly to the supramolecular structures displayed by these complexes in the solid state. All complexes display UV–vis absorptions in dichloromethane solution. Excitation and emission studies as well as lifetime measurements are described and can be correlated to the solid-state structures of the complexes. DFT and TDDFT computational studies have been performed on 5 and 8 which support the conclusions drawn from the photophysical studies. Access copy available to the general public Unrestricted info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 4.145 2012 CHEMISTRY, ORGANIC 11 / 57 = 0.193 2012 Q1 T1 CHEMISTRY, INORGANIC & NUCLEAR 6 / 44 = 0.136 2012 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Brayshaw, S. K. Raithby, P. R. Schiffers, S. Warren M. R. 2010 X Universidad de Zaragoza Dpto. Química Inorgánica Proy. investigación HWA 31, 1 (2012), 105-119 Organometallics Organometallics 0276-7333 1988616 http://zaguan.unizar.es/record/148643/files/texto_completo.pdf Postprint 1482858 http://zaguan.unizar.es/record/148643/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:148643 articulos driver 2025-01-20-14:54:44 ARTICLE