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Start Over Author "Usón, Isabel" Journal inorganic chemistry
15 results on '"Usón, Isabel"'

5. Reactions of Organotitanoxane Fluorides with AlR3(R = Me, Et, CH2Ph) and Me3SiCl: X-ray Crystal Structures of [C5Me5Ti(μ-O)]4F[(μ-F)AlMe3]3, [C5Me5Ti(μ-O)]4F3[(μ-F)Al(CH2Ph)3], [C5Me5Ti(μ-O)Et]4, and (C5Me5)4Ti4O5X2(X = Cl and F)†

Author

Yu, Peihua, primary, Pape, Thomas, additional, Usón, Isabel, additional, Said, Musa A., additional, Roesky, Herbert W., additional, Montero, Mavis L., additional, Schmidt, Hans-Georg, additional, and Demsar, Alojz, additional

Published
1998
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9. Reactions of {[Pd(μ-SC6F5)(μ-dppm)Pd](μ-SC6F5)}4·2O(C2H5)2. Crystal Structures of the Complexes [(Ph3P)Pd(μ-SC6F5)(μ-dppm)Pd(SC6F5)]·1.4CH2Cl2 and [(Ph3P)Pd(μ-SC6F5)(μ-dppm)Pd(PPh3)]SO3CF3·2CH2Cl2 and ab Initio MO Calculations on the Model Systems [(H3P)Pd(μ-H2PCH2PH2)(μ-SH)Pd(PH3)]+ and [(H3P)Pd(μ-H2PCH2PH2)Pd(PH3)]2+

Author

Usón, Rafael, primary, Forniés, Juan, additional, Fernández Sanz, Javier, additional, Usón, Miguel A., additional, Usón, Isabel, additional, and Herrero, Santiago, additional

Published
1997
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14. Tri-[Pt2Tl]3- and polynuclear chain [Pt-Tl]infinity- complexes based on nonbridged Pt(II)-Tl(I) bonds: solid state and frozen solution photophysical properties.

Author

Falvello LR, Forniés J, Garde R, García A, Lalinde E, Moreno MT, Steiner A, Tomas M, and Usón I

Abstract

Treatment of (NBu4)2[PtR4] (R = C6F5) with 1 or 0.5 equiv of TlNO3 in EtOH/H(2)O produces colorless crystals of trinuclear complex (NBu4)3[Tl{PtR4}2], 1, in which the Tl+ center is complexed by two [PtR4]2- fragments (Pt-Tl = 2.9777(4) and 3.0434(4) A). The expected mixed complex with a Pt/Tl composition of 1:1, 2, is generated as an orange microcrystalline solid by treating [PtR4]2- with a large excess of TlNO3 (approximately 8 equiv). Crystallographic analysis of 2 reveals the formation of a novel one-dimensional (1D) heterometallic linear chain (NBu4)(infinity)[Tl{PtR4}](infinity), 2, formed by alternating a [PtR4]2- fragment and a Tl+ center with a uniform Pt-Tl bond separation along the chain of 3.0321(2) A. Surprisingly, treatment of (NBu4)2[PtR4] with 1 equiv of TlPF6 in EtOH yields pale greenish-yellow needles of an unusual adduct, 2.{(NBu4)(PF6)}(infinity) (3), which was found to form a similar extended linear chain, {TlPtR4}(infinity), constructed by two alternating Pt-Tl separations, a shorter (3.1028(6) A) one and a longer (3.2306(6) A) one. The solid state and solution photophysical properties have been examined. While complex 1 shows a high-energy MM'CT blue phosphorescence (450 nm), the extended chain in 2 exhibits a lower-energy emission (582 nm) than that in adduct 3 (505 nm). For products 2 and 3, interesting luminescence thermochromism is observed in frozen solutions. The emissions are found to be strongly dependent on the solvent, concentration, and excitation wavelength.

Published
2006
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