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Adjustable coordination of a hybrid phosphine-phosphine oxide ligand in luminescent Cu, Ag and Au complexes

, : Adjustable coordination of a hybrid phosphine-phosphine oxide ligand in luminescent Cu, Ag and Au complexes. Dalton Transactions 45(36): 14160-14173

A potentially tridentate hemilabile ligand, PPh2-C6H4-PPh(O)-C6H4-PPh2 (P(3)O), has been used for the construction of a family of bimetallic complexes [MM'(P(3)O)2](2+) (M = M' = Cu (1), Ag (2), Au (3); M = Au, M' = Cu (4)) and their mononuclear halide congeners M(P(3)O)Hal (M = Cu (5-7), Ag (8-10)). Compounds 1-10 have been characterized in the solid state by single-crystal X-ray diffraction analysis to reveal a variable coordination mode of the phosphine-oxide group of the P(3)O ligand depending on the preferable number of coordination vacancies on the metal center. According to the theoretical studies, the interaction of the hard donor P[double bond, length as m-dash]O moiety with d(10) ions becomes less effective in the order Cu > Ag > Au. 1-10 exhibit room temperature luminescence in the solid state, and the intensity and energy of emission are mostly determined by the nature of metal atoms. The photophysical characteristics of the monometallic species were compared with those of the related compounds M(P(3))Hal (11-16) with the non-oxidized ligand P(3). It was found that in the case of the copper complexes 5-7 the P(3)O hybrid ligand introduces effective non-radiative pathways of the excited state relaxation leading to poor emission, while for the silver luminophores the P[double bond, length as m-dash]O group leads mainly to the modulation of luminescence wavelength.


PMID: 27530362

DOI: 10.1039/c6dt02435a

Other references

Bruscagli, G.; Calabrese, L.; Pagnini, P.; Nozzoli, F., 1962: The biology and the external expressions of mesothelioma. In 30,000 autopsies, 10 necroscopic and one bioptic finding of mesothelioma was obtained, indicating the rarity of the condition. The ages of the subjects varied from 20 to 74 years, and both sexes were equally represented. Localizations included...

Glabaĭ, V.P.; Pilipikha, V.V.; Iurkov, M.S., 1988: A case of giant echinococcal cysts. Klinicheskaia Khirurgiia: 59-60

Jones, E.A., 1983: Hepatic sinusoidal cells: new insights and controversies. Hepatology 3(2): 259-266

Buchanan, D., 1972: Moving a ward. Nursing Times 68(51): 1607-1608

Nelson R.C.; Malko J.A.; Long R.C.; Coumans J.; Bernardino M.E., 1987: The relation of t1 and t2 contrast of flip angle and fast field echo mr imaging. Magnetic Resonance Imaging 5(SUPPL 1): 105-106

Robertson H.A.; King G.J.; Elliot J.I., 1974: Induction of parturition in the pig. Journal of Animal Science 39(5): 994

Horner, S., 1998: Crisis in cremation. Positive action by the home office is urgently needed. Bmj 317(7157): 485-486

Ivanov V.K., 2006: Geodynamic factors of Permian sedimentation of the Dnieper-Donets Basin. Geologichnyy Zhurnal (1995) = Geological Journal 2006(1): 51-56

Itzkowitz M., 1971: Preliminary study of the social behavior of male gambusia affinis pisces poeciliidae in aquaria. Chesapeake Science 12(4): 219-224

Ho-Pun-Cheung, A.; Bazin, Hé.; Gaborit, Nège.; Larbouret, C.; Garnero, P.; Assenat, E.; Castan, F.; Bascoul-Mollevi, C.; Ramos, J.; Ychou, M.; Pèlegrin, Aé.; Mathis, Gérard.; Lopez-Crapez, E., 2012: Quantification of HER expression and dimerization in patients' tumor samples using time-resolved Förster resonance energy transfer. Following the development of targeted therapies against EGFR and HER2, two members of the human epidermal receptor (HER) family of receptor tyrosine kinases, much interest has been focused on their expression in tumors. However, knowing the expres...