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Forniés J, Sicilia V, Borja P, et al. Luminescent benzoquinolate-isocyanide platinum(II) complexes: effect of Pt⋅⋅⋅Pt and π⋅⋅⋅π interactions on their photophysical properties. Chem Asian J. 2012;7(12):2813-23doi: 10.1002/asia.201200585.
Forniés, J., Sicilia, V., Borja, P., Casas, J. M., Díez, A., Lalinde, E., Larraz, C., Martín, A., & Moreno, M. T. (2012). Luminescent benzoquinolate-isocyanide platinum(II) complexes: effect of Pt⋅⋅⋅Pt and π⋅⋅⋅π interactions on their photophysical properties. Chemistry, an Asian journal, 7(12), 2813-23. https://doi.org/10.1002/asia.201200585
Forniés, Juan, et al. "Luminescent benzoquinolate-isocyanide platinum(II) complexes: effect of Pt⋅⋅⋅Pt and π⋅⋅⋅π interactions on their photophysical properties." Chemistry, an Asian journal vol. 7,12 (2012): 2813-23. doi: https://doi.org/10.1002/asia.201200585
Forniés J, Sicilia V, Borja P, Casas JM, Díez A, Lalinde E, Larraz C, Martín A, Moreno MT. Luminescent benzoquinolate-isocyanide platinum(II) complexes: effect of Pt⋅⋅⋅Pt and π⋅⋅⋅π interactions on their photophysical properties. Chem Asian J. 2012 Dec;7(12):2813-23. doi: 10.1002/asia.201200585. Epub 2012 Sep 20. PMID: 22997177.
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Chem Asian J. 2012 Dec;7(12):2813-23. doi: 10.1002/asia.201200585. Epub 2012 Sep 20.

Luminescent benzoquinolate-isocyanide platinum(II) complexes: effect of Pt⋅⋅⋅Pt and π⋅⋅⋅π interactions on their photophysical properties.

Chemistry, an Asian journal

Juan Forniés, Violeta Sicilia, Pilar Borja, José M Casas, Alvaro Díez, Elena Lalinde, Carmen Larraz, Antonio Martín, M Teresa Moreno

Affiliations

  1. Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Departamento de Química Inorgánica, Facultad de Ciencias, Pedro Cerbuna 12, 50009 Zaragoza, Spain. [email protected]

PMID: 22997177 DOI: 10.1002/asia.201200585

Abstract

The neutral compounds [Pt(bzq)(CN)(CNR)] (R = tBu (1), Xyl (2), 2-Np (3); bzq = benzoquinolate, Xyl = 2,6-dimethylphenyl, 2-Np = 2-napthyl) were isolated as the pure isomers with a trans-C(bzq),CNR configuration, as confirmed by (13)C{(1)H} NMR spectroscopy in the isotopically marked [Pt(bzq)((13)CN)(CNR)] (R = tBu (1'), Xyl (2'), 2-Np (3')) derivatives (δ(13)C(CN) ≈ 110 ppm; (1) J(Pt,(13)C) ≈ 1425 Hz]. By contrast, complex [Pt(bzq)(C≡CPh)(CNXyl)] (4) with a trans-N(bzq),CNR configuration, has been selectively isolated from [Pt(bzq)Cl(CNXyl)] (trans-N(bzq),CNR) using Sonogashira conditions. X-ray diffraction studies reveal that while 1 adopts a columnar-stacked chain structure with Pt-Pt distances of 3.371(1) Å and significant π⋅⋅⋅π interactions (3.262 Å), complex 2 forms dimers supported only by short Pt⋅⋅⋅Pt (3.370(1) Å) interactions. In complex 4 the packing is directed by weak bzq⋅⋅⋅Xyl and bzq⋅⋅⋅C≡E (C, N) interactions. In solid state at room temperature, compounds 1 and 2 both show a bright red emission (ϕ = 42.1% 1, 57.6% 2). Luminescence properties in the solid state at 77 K and concentration-dependent emission studies in CH(2)Cl(2) at 298 K and at 77 K are also reported for 1-4.

Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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