2024-03-29T05:34:26Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1848142020-01-28T07:21:52Zcom_10261_52707com_10261_5col_10261_52708
Pt2Tl building blocks for two-dimensional extended solids: synthesis, crystal structures, and luminescence
Fuertes, Sara
Chueca, Andrés J.
Martín, Antonio
Sicilia, Violeta
Ministerio de Economía y Competitividad (España)
European Commission
Gobierno de Aragón
Martín, Antonio [0000-0002-4808-574X]
Sicilia, Violeta [0000-0002-0257-0483]
The β-diketonate compounds of Pt(II), [Pt(R-C^C*)(acac)] (acacH = acetylacetone, R-CH^C* = 1-(4-cyanophenyl)-3-methyl-1H-imidazol-2-ylidene (NC–CH^C*) 1A, 1-(4-(ethoxycarbonyl)phenyl)-3-methyl-1H-imidazol-2-ylidene (CO2Et-CH^C*) 1B, 1-(3,5-dichlorophenyl)-3-methyl-1H-imidazol-2-ylidene (Cl-CH^C*) 1C) containing cyclometalated N-heterocyclic carbenes were synthesized from compounds [{Pt(μ-Cl)(R-C^C*)}2] (R = CN A, CO2Et B, Cl C). Compound C was prepared for the first time following a step-by-step protocol used to synthesize A and B. The X-ray structures of complexes 1B and 1C show that only in 1B the molecules stack in pairs through intermolecular Pt···Pt (3.370 Å) and π–π (∼3.43 Å) interactions between the NHC ligand and the acac. The reaction of compounds 1A–1C with TlPF6 (2:1 molar ratio) leads to the clusters [{Pt(R-C^C*)(acac)}2Tl]+ (R = CN 2A, CO2Et 2B, Cl 2C), which exhibit a “Pt2Tl” sandwich structure, where two slightly distorted square planar “Pt(R-C^C*)(acac)” subunits are bonded to a Tl(I) center through donor–acceptor Pt–Tl bonds. Compounds 2A and 2B show an extended two-dimensional lattice in the solid state through intermolecular Pt··Pt and Tl–E (E = N, O) interactions; meanwhile 2C forms discrete molecules without any kind of intermolecular interaction among them. The effects of the R substituent and the Pt–Tl interactions on the crystal structures and the photophysical properties have been investigated.
2019-06-25T10:44:18Z
2019-06-25T10:44:18Z
2017
artículo
Crystal Growth and Design 17(8): 4336-4346 (2017)
1528-7483
http://hdl.handle.net/10261/184814
10.1021/acs.cgd.7b00662
1528-7505
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100010067
http://dx.doi.org/10.13039/501100003329
eng
Postprint
https://doi.org/10.1021/acs.cgd.7b00662
Sí
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2015-67461-P
openAccess
American Chemical Society