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Ragone, F.; Ruiz, G.T.; Piro, O.E.; Echeverría, G.A.; Cabrerizo, F.M.; Petroselli, G.; Erra-Balsells, R.; Hiraoka, K.; García Einschlag, F.S.; Wolcan, E. "Water-soluble (Pterin)rhenium(I) complex: Synthesis, structural characterization, and two reversible protonation-deprotonation behavior in aqueous solutions" (2012) European Journal of Inorganic Chemistry(30):4801-4810
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Abstract:

A new water-soluble complex, Re(CO) 3(pterin)(H 2O), was synthesized and characterized by 1H NMR and FTIR spectroscopy, and by a combination of three mass spectrometry techniques: MALDI, probe electrospray ionisation (PESI), and ESI. Because, unlike most metal-pterin complexes, the Re I complex is quite soluble in water, appropriate single crystals could be obtained for structural X-ray analysis. We report here the first solid state molecular structure containing a pterin ligand coordinated to the Re(CO) 3 core. This determination revealed that strong H bonds between the hydrogen atom of the 2-amino group and crystallization water molecules give rise to a polymeric arrangement of Re(CO) 3(pterin) (H 2O) complexes in the lattice. Protonation studies in aqueous solutions of the Re I complex showed two acid-base equilibriums with pK a1 = 3.9 and pK a2 = 8.8. pK a1 was assigned to the protonation equilibrium at N3 of the pterin ligand in the complex and pK a2 could be ascribed to the deprotonation of a coordinated water molecule. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Registro:

Documento: Artículo
Título:Water-soluble (Pterin)rhenium(I) complex: Synthesis, structural characterization, and two reversible protonation-deprotonation behavior in aqueous solutions
Autor:Ragone, F.; Ruiz, G.T.; Piro, O.E.; Echeverría, G.A.; Cabrerizo, F.M.; Petroselli, G.; Erra-Balsells, R.; Hiraoka, K.; García Einschlag, F.S.; Wolcan, E.
Filiación:Instituto de Investigaciones Fisicoquímicas Teõricas y Aplicadas, Diag. 113 y 64, Sucursal 4, C.C. 16, (B1906ZAA) La Plata, Argentina
Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de la Plata e IFLP (CONICET, CCT-la Plata), C.C. 67, (1900) La Plata, Argentina
IIB-INTECH-CONICET, Universidad Nacional de San Martín, Intendente Marino km 8.2 C.C. 164, (B7130IWA) Chascomús, Buenos Aires, Argentina
CIHIDECAR-CONICET, Departamento de Química Orgánica, Universidad de Buenos Aires, Pabellõn II, Ciudad Universitaria, (1428) Buenos Aires, Argentina
Clean Energy Research Center, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi, 400-8511, Japan
Palabras clave:Acidity; N,O ligands; Pterin; Rhenium
Año:2012
Número:30
Página de inicio:4801
Página de fin:4810
DOI: http://dx.doi.org/10.1002/ejic.201200681
Título revista:European Journal of Inorganic Chemistry
Título revista abreviado:Eur. J. Inorg. Chem.
ISSN:14341948
CODEN:EJICF
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14341948_v_n30_p4801_Ragone

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Citas:

---------- APA ----------
Ragone, F., Ruiz, G.T., Piro, O.E., Echeverría, G.A., Cabrerizo, F.M., Petroselli, G., Erra-Balsells, R.,..., Wolcan, E. (2012) . Water-soluble (Pterin)rhenium(I) complex: Synthesis, structural characterization, and two reversible protonation-deprotonation behavior in aqueous solutions. European Journal of Inorganic Chemistry(30), 4801-4810.
http://dx.doi.org/10.1002/ejic.201200681
---------- CHICAGO ----------
Ragone, F., Ruiz, G.T., Piro, O.E., Echeverría, G.A., Cabrerizo, F.M., Petroselli, G., et al. "Water-soluble (Pterin)rhenium(I) complex: Synthesis, structural characterization, and two reversible protonation-deprotonation behavior in aqueous solutions" . European Journal of Inorganic Chemistry, no. 30 (2012) : 4801-4810.
http://dx.doi.org/10.1002/ejic.201200681
---------- MLA ----------
Ragone, F., Ruiz, G.T., Piro, O.E., Echeverría, G.A., Cabrerizo, F.M., Petroselli, G., et al. "Water-soluble (Pterin)rhenium(I) complex: Synthesis, structural characterization, and two reversible protonation-deprotonation behavior in aqueous solutions" . European Journal of Inorganic Chemistry, no. 30, 2012, pp. 4801-4810.
http://dx.doi.org/10.1002/ejic.201200681
---------- VANCOUVER ----------
Ragone, F., Ruiz, G.T., Piro, O.E., Echeverría, G.A., Cabrerizo, F.M., Petroselli, G., et al. Water-soluble (Pterin)rhenium(I) complex: Synthesis, structural characterization, and two reversible protonation-deprotonation behavior in aqueous solutions. Eur. J. Inorg. Chem. 2012(30):4801-4810.
http://dx.doi.org/10.1002/ejic.201200681