Luminescence studies of new [C,N,N'] cyclometallated platinum(II) and platinum(IV) compounds

The synthesis of six novel cyclometallated platinum(IV) compounds (3a-3c and 4a-4c) derived from ligand (4-FC6H4)CH=N(CH2)3N(CH3)2 (L) was achieved by intermolecular oxidative addition of halogens to cyclometallated platinum(II) compounds [Pt(CH3){(CH3)2N(CH2)3N=CH(4-FC6H3)}] (1) and [PtX{(CH3)2N(CH...

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Autores: Lázaro, Ariadna, Serra, Oriol, Rodríguez Raurell, Laura, Crespo Vicente, Margarita Ma., Font Bardia, Ma. Mercedes
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2019
País:España
Recursos:Universidad de Barcelona
Repositório:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/152746
Acesso em linha:https://hdl.handle.net/2445/152746
Access Level:Acceso aberto
Palavra-chave:Platí
Fosforescència
Lligands
Platinum
Phosphorescence
Ligands
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spelling Luminescence studies of new [C,N,N'] cyclometallated platinum(II) and platinum(IV) compoundsLázaro, AriadnaSerra, OriolRodríguez Raurell, LauraCrespo Vicente, Margarita Ma.Font Bardia, Ma. MercedesPlatíFosforescènciaLligandsPlatinumPhosphorescenceLigandsThe synthesis of six novel cyclometallated platinum(IV) compounds (3a-3c and 4a-4c) derived from ligand (4-FC6H4)CH=N(CH2)3N(CH3)2 (L) was achieved by intermolecular oxidative addition of halogens to cyclometallated platinum(II) compounds [Pt(CH3){(CH3)2N(CH2)3N=CH(4-FC6H3)}] (1) and [PtX{(CH3)2N(CH2)3N=CH(4-FC6H3)}] (2a, X = Cl; 2b, X = Br; 2c, X = I). While compound 2b could be obtained from 2a through Cl for Br substitution reaction, 2c was best obtained through cyclometallation of ligand L with [PtI2(dmso)2]. The X-ray molecular structures of [C,N,N'] platinum(II) (2b) and platinum(IV) (3b and 4b) cyclometallated compounds and of the [N,N'] platinum (II) compound Ib, all of them containing bromido ligands, are reported. The absorption and emission spectra were also studied in dichloromethane solution at room temperature. All compounds, except 3c and 4c arising from oxidative addition of iodine, display a broad emission band in the 340-360 nm range, attributed to platinum disturbed intraligand (IL) transitions, when excited at the highest energy band, and higher emission intensities were observed, in general, for cyclometallated platinum(IV) compounds.Royal Society of Chemistry2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/152746Articles publicats en revistes (Química Inorgànica i Orgànica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1039/c8nj05492dNew Journal of Chemistry, 2019, vol. 43, num. 3, p. 1247-1256https://doi.org/10.1039/c8nj05492d(c) Lázaro, Adriana et al., 2019info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1527462026-05-27T06:46:51Z
dc.title.none.fl_str_mv Luminescence studies of new [C,N,N'] cyclometallated platinum(II) and platinum(IV) compounds
title Luminescence studies of new [C,N,N'] cyclometallated platinum(II) and platinum(IV) compounds
spellingShingle Luminescence studies of new [C,N,N'] cyclometallated platinum(II) and platinum(IV) compounds
Lázaro, Ariadna
Platí
Fosforescència
Lligands
Platinum
Phosphorescence
Ligands
title_short Luminescence studies of new [C,N,N'] cyclometallated platinum(II) and platinum(IV) compounds
title_full Luminescence studies of new [C,N,N'] cyclometallated platinum(II) and platinum(IV) compounds
title_fullStr Luminescence studies of new [C,N,N'] cyclometallated platinum(II) and platinum(IV) compounds
title_full_unstemmed Luminescence studies of new [C,N,N'] cyclometallated platinum(II) and platinum(IV) compounds
title_sort Luminescence studies of new [C,N,N'] cyclometallated platinum(II) and platinum(IV) compounds
dc.creator.none.fl_str_mv Lázaro, Ariadna
Serra, Oriol
Rodríguez Raurell, Laura
Crespo Vicente, Margarita Ma.
Font Bardia, Ma. Mercedes
author Lázaro, Ariadna
author_facet Lázaro, Ariadna
Serra, Oriol
Rodríguez Raurell, Laura
Crespo Vicente, Margarita Ma.
Font Bardia, Ma. Mercedes
author_role author
author2 Serra, Oriol
Rodríguez Raurell, Laura
Crespo Vicente, Margarita Ma.
Font Bardia, Ma. Mercedes
author2_role author
author
author
author
dc.subject.none.fl_str_mv Platí
Fosforescència
Lligands
Platinum
Phosphorescence
Ligands
topic Platí
Fosforescència
Lligands
Platinum
Phosphorescence
Ligands
description The synthesis of six novel cyclometallated platinum(IV) compounds (3a-3c and 4a-4c) derived from ligand (4-FC6H4)CH=N(CH2)3N(CH3)2 (L) was achieved by intermolecular oxidative addition of halogens to cyclometallated platinum(II) compounds [Pt(CH3){(CH3)2N(CH2)3N=CH(4-FC6H3)}] (1) and [PtX{(CH3)2N(CH2)3N=CH(4-FC6H3)}] (2a, X = Cl; 2b, X = Br; 2c, X = I). While compound 2b could be obtained from 2a through Cl for Br substitution reaction, 2c was best obtained through cyclometallation of ligand L with [PtI2(dmso)2]. The X-ray molecular structures of [C,N,N'] platinum(II) (2b) and platinum(IV) (3b and 4b) cyclometallated compounds and of the [N,N'] platinum (II) compound Ib, all of them containing bromido ligands, are reported. The absorption and emission spectra were also studied in dichloromethane solution at room temperature. All compounds, except 3c and 4c arising from oxidative addition of iodine, display a broad emission band in the 340-360 nm range, attributed to platinum disturbed intraligand (IL) transitions, when excited at the highest energy band, and higher emission intensities were observed, in general, for cyclometallated platinum(IV) compounds.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/152746
url https://hdl.handle.net/2445/152746
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1039/c8nj05492d
New Journal of Chemistry, 2019, vol. 43, num. 3, p. 1247-1256
https://doi.org/10.1039/c8nj05492d
dc.rights.none.fl_str_mv (c) Lázaro, Adriana et al., 2019
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Lázaro, Adriana et al., 2019
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv Articles publicats en revistes (Química Inorgànica i Orgànica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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