doi:10.1002/chem.201404915engFuertes, S.García, H.Perálvarez, M.Hertog, W.Carreras, J.Sicilia, V.Stepwise strategy to cyclometallated PtII complexes with N-heterocyclic carbene ligands: A luminescence study on new ß-diketonate complexesART-2015-89636The imidazolium salt 3-methyl-1-(naphthalen-2-yl)-1H-imidazolium iodide (2) has been treated with silver(I) oxide and [{Pt(mu-Cl)(eta(3)-2-Me-C3H4)}(2)] (eta(3)-2-Me-C3H4 = eta(3)-2-methylallyl) to give the intermediate N-heterocyclic carbene complex [PtCl(eta(3)-2-Me-C3H4)(H (CC) over cap*-kappa C*)] (3) (H (CC) over cap*-kappa C* = 3-methyl-1-(naphthalen-2-yl)-1H-imidazol-2-ylidene). Compound 3 undergoes regiospecific cyclometallation at the naphthyl ring of the NHC ligand to give the five-membered platinacycle compound [{Pt(mu-Cl)((CC) over cap*)}(2)] (4). Chlorine abstraction from 4 with beta-diketonate Tl derivatives rendered the corresponding neutral compounds [Pt((CC) over cap*)(L-O,O')] {L = acac (HL = acetylacetone) 5, phacac (HL = 1,3-diphenyl-1,3-propanedione) 6, hfacac (HL = hexafluoroacetylacetone) 7}. All of the compounds (3-7) were fully characterized by standard spectroscopic and analytical methods. X-ray diffraction studies were performed on 5-7, revealing short Pt-Pt and pi-pi interactions in the solid-state structure. The influence of the R-substituents of the beta-diketonate ligand on the photophysical properties and the use of the most efficient emitter, 5, as phosphor converter has also been studied.2015http://zaguan.unizar.es/record/5842610.1002/chem.201404915http://zaguan.unizar.es/record/58426oai:zaguan.unizar.es:58426info:eu-repo/grantAgreement/ES/MINECO/TEC2012-38901-C02-01info:eu-repo/grantAgreement/EC/FP7/246558/EU/ARAID-European UnionAttraction of Researchers and Fellowship Program/ARAIDEUinfo:eu-repo/grantAgreement/ES/MICINN/CTQ2008-06669-C02-01-BQUChemistry - A European Journal 21, 4 (2015), 1620-1631by-nchttp://creativecommons.org/licenses/by-nc/3.0/es/info:eu-repo/semantics/openAccess