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2012

Diaz, C; Valenzuela, M L; Carrillo, D; Riquelme, J; Diaz, R

The Inclusion of Organometallic Derivatives of Cyclotriphosphazenes inside Sio2 Matrix and Their Conversion to Nanostructured Metal-Oxides and Phosphates Artículo de revista

Journal of Inorganic and Organometallic Polymers and Materials, 22 (5), pp. 1101-1112, 2012, ISSN: 1574-1443.

Resumen | Enlaces | BibTeX | Etiquetas: bridged catalyst, copper cyclotriphospahzenes, mesoporous metallic nanoparticles, nanostructures, phosphoric-acid polysilsesquioxanes, precursors, silica, sol-gel sol-gel, synthesis, thermolytic thin-films, transformation, xerogel

@article{RN88,
title = {The Inclusion of Organometallic Derivatives of Cyclotriphosphazenes inside Sio2 Matrix and Their Conversion to Nanostructured Metal-Oxides and Phosphates},
author = { C. Diaz and M.L. Valenzuela and D. Carrillo and J. Riquelme and R. Diaz},
url = {/brokenurl#<Go to ISI>://WOS:000307754600022},
doi = {10.1007/s10904-012-9692-x},
issn = {1574-1443},
year = {2012},
date = {2012-01-01},
journal = {Journal of Inorganic and Organometallic Polymers and Materials},
volume = {22},
number = {5},
pages = {1101-1112},
abstract = {Organometallic derivatives of the cyclotriphosphazene N3P3[OC6H4CH2CN center dot TiClCp2](6) (1), N3P3(O6H5)(5)[OC6H4N center dot W(CO)(5)] (2), N3P3[OC6H4CH2CN center dot Mo(CO)(5)](6) (3), [N3P3(O6H5)(5)(OC5H4N center dot CpRu(PPh3)(2))][PF6] (4), [N3P3(O2C12H8)(2)OC5H4N center dot Ag(PPh3)][OSO2CF3] (5), N3P3[OC6H5](5) [OC5H4N center dot Cu][PF6] (6) and N3P3[OC6H4CH2CN center dot CuCl](6)[PF6](6) (7),were incorporated inside SiO2 through the sol-gel method. The metal-organic nanocomposites of the general formula N3P3[OC6H4CH2CN center dot TiClCp2](6)center dot nSiO(2) (G (1) ), N3P3[OC6H4N center dot W(CO)(5)]center dot nSiO(2) (G (2) ), N3P3[OC6H4CH2CN center dot Mo(CO)(5)](6)center dot nSiO(2) (G (3) ), N3P3(O6H5)(5)OC5H4N center dot CpRu(PPh3)(2)][PF6]center dot nSiO(2) (G (4) ), [N3P3(O2C12H8)(2)OC5H4N center dot Ag(PPh3)][OSO2CF3]center dot nSiO(2) (G (5) ), N3P3[OC6H5](5)[OC5H4N center dot Cu][PF6]center dot(SiO2) (n) (G (6) ), and N3P3[OC6H4CH2CN center dot CuCl](6)[PF6](6)center dot(SiO2) (n) (G (7) ), were characterized by IR spectroscopy; C-12, (31) P and Si-29 MAS NMR measurements as well as UV-Visible diffuse reflectance spectra, indicating the presence of the respective organometallic derivatives of the cyclotriphosphazene incorporated into SiO2. Pyrolysis of these nanocomposites under air at 800 A degrees C gives rise to nanostructured metal-oxides and metal phosphates incorporated into amorphous SiO2, with the presence in some cases of complexes phase mixtures. From some precursors, we obtained metal-oxides/phosphates nanoparticles separated from the SiO2 nanoparticles instead the oxides/phosphates nanoparticles inside the SiO2 matrix. Additionally and for comparison purposes, we used the compound N3P3[NH(CH2)(3)Si(OEt)(3)](6) as gelator. Nanocomposites (G' (1) ), (G' (2) ) and (G' (3) ) exhibited mainly morphological differences while in some cases composition differences when using TEOS as gelator., Some simple metal-containing compounds as (O3SCF3)Ag(PPh3)(HOC5H4N), [CuCl2 center dot NC5H4OH] and [CuCl2 center dot NCCH2C6H4OH]-which are useful models of the most complexes (G (5) ), (G (6) ) and (G (7) ) were also prepared and incorporated in amorphous silica. Their pyrolytic products were compared with those of more complex cyclotriphosphazene analogous. Interestingly, the pyrolysis of the nanocomposite [(O3SCF3)Ag(PPh3)(HOC5H4N)][SiO2] (n) affords the firstly-reported materials containing Ag2O along with SiO2 nanoparticles.},
keywords = {bridged catalyst, copper cyclotriphospahzenes, mesoporous metallic nanoparticles, nanostructures, phosphoric-acid polysilsesquioxanes, precursors, silica, sol-gel sol-gel, synthesis, thermolytic thin-films, transformation, xerogel},
pubstate = {published},
tppubtype = {article}
}

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Organometallic derivatives of the cyclotriphosphazene N3P3[OC6H4CH2CN center dot TiClCp2](6) (1), N3P3(O6H5)(5)[OC6H4N center dot W(CO)(5)] (2), N3P3[OC6H4CH2CN center dot Mo(CO)(5)](6) (3), [N3P3(O6H5)(5)(OC5H4N center dot CpRu(PPh3)(2))][PF6] (4), [N3P3(O2C12H8)(2)OC5H4N center dot Ag(PPh3)][OSO2CF3] (5), N3P3[OC6H5](5) [OC5H4N center dot Cu][PF6] (6) and N3P3[OC6H4CH2CN center dot CuCl](6)[PF6](6) (7),were incorporated inside SiO2 through the sol-gel method. The metal-organic nanocomposites of the general formula N3P3[OC6H4CH2CN center dot TiClCp2](6)center dot nSiO(2) (G (1) ), N3P3[OC6H4N center dot W(CO)(5)]center dot nSiO(2) (G (2) ), N3P3[OC6H4CH2CN center dot Mo(CO)(5)](6)center dot nSiO(2) (G (3) ), N3P3(O6H5)(5)OC5H4N center dot CpRu(PPh3)(2)][PF6]center dot nSiO(2) (G (4) ), [N3P3(O2C12H8)(2)OC5H4N center dot Ag(PPh3)][OSO2CF3]center dot nSiO(2) (G (5) ), N3P3[OC6H5](5)[OC5H4N center dot Cu][PF6]center dot(SiO2) (n) (G (6) ), and N3P3[OC6H4CH2CN center dot CuCl](6)[PF6](6)center dot(SiO2) (n) (G (7) ), were characterized by IR spectroscopy; C-12, (31) P and Si-29 MAS NMR measurements as well as UV-Visible diffuse reflectance spectra, indicating the presence of the respective organometallic derivatives of the cyclotriphosphazene incorporated into SiO2. Pyrolysis of these nanocomposites under air at 800 A degrees C gives rise to nanostructured metal-oxides and metal phosphates incorporated into amorphous SiO2, with the presence in some cases of complexes phase mixtures. From some precursors, we obtained metal-oxides/phosphates nanoparticles separated from the SiO2 nanoparticles instead the oxides/phosphates nanoparticles inside the SiO2 matrix. Additionally and for comparison purposes, we used the compound N3P3[NH(CH2)(3)Si(OEt)(3)](6) as gelator. Nanocomposites (G' (1) ), (G' (2) ) and (G' (3) ) exhibited mainly morphological differences while in some cases composition differences when using TEOS as gelator., Some simple metal-containing compounds as (O3SCF3)Ag(PPh3)(HOC5H4N), [CuCl2 center dot NC5H4OH] and [CuCl2 center dot NCCH2C6H4OH]-which are useful models of the most complexes (G (5) ), (G (6) ) and (G (7) ) were also prepared and incorporated in amorphous silica. Their pyrolytic products were compared with those of more complex cyclotriphosphazene analogous. Interestingly, the pyrolysis of the nanocomposite [(O3SCF3)Ag(PPh3)(HOC5H4N)][SiO2] (n) affords the firstly-reported materials containing Ag2O along with SiO2 nanoparticles.

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