000168241 001__ 168241
000168241 005__ 20260130124311.0
000168241 0247_ $$2doi$$a10.1021/acs.organomet.9b00500
000168241 0248_ $$2sideral$$a114278
000168241 037__ $$aART-2019-114278
000168241 041__ $$aeng
000168241 100__ $$aPaziresh, Sareh
000168241 245__ $$aThe influence of cyclometalated ligand motifs on the solid-state assemblies and luminescent properties of pt(ii)-tl(i) complexes
000168241 260__ $$c2019
000168241 5060_ $$aAccess copy available to the general public$$fUnrestricted
000168241 5203_ $$aWe have synthesized the HC^Npz ligand, 1-(naphthalen-2-yl)-1H-pyrazole (1A), and carried out its cyclometalation reaction with [{Pt(η3-C4H7)(μ-Cl)}2] to give [{Pt(Naph^N)(μ-Cl)}2]. This process takes place via the intermediate [Pt(η3-C4H7)Cl(HNaph^N-κN)] (2A) which could be isolated and fully characterized. Compound [{Pt(Naph^N)(μ-Cl)}2] and the analogous N-heterocyclic carbene complex [{Pt(Naph^C*)(μ-Cl)}2] (HNaph^C*-κC* = 3-methyl-1-(naphthalen-2-yl)-1H-imidazol-2-ylidene) were used to prepare the bis-cyanide anionic derivatives NnBu4[Pt(Naph^E)(CN)2] (E = Npz4A, C*carbene4B) which subsequently react with TlPF6 to afford the corresponding complexes [PtTl(Naph^E)(CN)2] (5A and 5B). The X-ray structures of 5A and 5B show the presence of 2D extended networks created by organometallic “PtTl(Naph^E)(CN)2” entities, each one containing a Pt→Tl dative bond (d Pt–Tl = 3.0205(3) Å 5A, 2.9395(4) Å 5B). These units are linked together through additional Tl···N≡C and Tl···π contacts, which, in the case of 5B, renders a stair-like arrangement. NBO charge distributions analysis on 4A and 4B shows a small negative charge on the Pt center for 4B, while positive for 4A, indicating the more electron donating character of the carbene with respect to the pyrazole group. 195Pt and 13C NMR spectra of NnBu4[Pt(Naph^E)(13CN)2] (E = Npz4A′, C*carbene4B′) account for this difference. Photophysical analysis has been performed for 4A/B and 5A/B regarding the Naph^E fragment. The emissions of 4A and 4B in CH2Cl2 at 77 K present similar profiles and have been assigned to 3ILCT [π(Naph^E) → π*(Naph^E)] excited states. The green emission of 4A in poly(methyl methacrylate) (PMMA) film (5 wt %) affords a photoluminescence quantum yield (PLQY, Φ) of 82%. In the solid state, the vibronic emissions of 5A (λmax = 528 nm) and 5B (λmax = 561 nm) are red-shifted in relation to their precursors (λmax = 488 nm 4A, 530 nm 4B) and are mainly attributed to 3MM′LCT [d/s σ*(Pt,Tl) → π*(Naph^E)] excited states.
000168241 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000168241 590__ $$a3.804$$b2019
000168241 591__ $$aCHEMISTRY, ORGANIC$$b12 / 57 = 0.211$$c2019$$dQ1$$eT1
000168241 591__ $$aCHEMISTRY, INORGANIC & NUCLEAR$$b6 / 45 = 0.133$$c2019$$dQ1$$eT1
000168241 592__ $$a1.345$$b2019
000168241 593__ $$aInorganic Chemistry$$c2019$$dQ1
000168241 593__ $$aPhysical and Theoretical Chemistry$$c2019$$dQ1
000168241 593__ $$aOrganic Chemistry$$c2019$$dQ1
000168241 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000168241 700__ $$0(orcid)0000-0002-0257-0483$$aSicilia, Violeta$$uUniversidad de Zaragoza
000168241 700__ $$0(orcid)0000-0002-5881-9698$$aAra, Irene$$uUniversidad de Zaragoza
000168241 700__ $$0(orcid)0000-0002-4808-574X$$aMartín, Antonio$$uUniversidad de Zaragoza
000168241 700__ $$0(orcid)0000-0003-1812-3175$$aFuertes, Sara
000168241 7102_ $$12010$$2760$$aUniversidad de Zaragoza$$bDpto. Química Inorgánica$$cÁrea Química Inorgánica
000168241 773__ $$g38, 19 (2019), 3804-3815$$pOrganometallics$$tOrganometallics$$x0276-7333
000168241 8564_ $$s1970687$$uhttps://zaguan.unizar.es/record/168241/files/texto_completo.pdf$$yPostprint
000168241 8564_ $$s775657$$uhttps://zaguan.unizar.es/record/168241/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000168241 909CO $$ooai:zaguan.unizar.es:168241$$particulos$$pdriver
000168241 951__ $$a2026-01-30-12:20:29
000168241 980__ $$aARTICLE