Author | dc.contributor.author | Carriedo, Gabino | |
Author | dc.contributor.author | García Alonso, Francisco Javier | es_CL |
Author | dc.contributor.author | Díaz Valenzuela, Carlos | es_CL |
Author | dc.contributor.author | Valenzuela, María Luisa | es_CL |
Admission date | dc.date.accessioned | 2008-12-16T15:22:06Z | |
Available date | dc.date.available | 2008-12-16T15:22:06Z | |
Publication date | dc.date.issued | 2006-01-02 | |
Cita de ítem | dc.identifier.citation | POLYHEDRON Volume: 25 Issue: 1 Pages: 105-112 Published: JAN 2 2006 | en |
Identifier | dc.identifier.issn | 0277-5387 | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/118770 | |
Abstract | dc.description.abstract | The phosphazene copolymers {[NP(O2C12H8)](0.5)[NP(O-C6H4-CO2Pr")(O-C6H4-L)](0.5)}(n) [L=CN (1), PPh2, (2)] and {[NP(O2C12H8)](0.6)[NP(O-C6H4-CO2Pr")(O-C6H4-L)](0.4)}(n) (3) have been synthesized by sequential substitution from [NPCl2](n),. Their reactions with [W(MeOH)(CO)(5)] gives the corresponding tungsten carbonyl complexes {[NP(O2C12H8)](0.5)[NP(O-C6H4-CO2Pr")(O-C6H4-CN)(W(CO)(5))(0.4)](0.5)}(n) (4), {[NP(O2C12H8)](0.5)[NP(O-C6H4-CO2Pr")(O-C6H4-PPh2)(W(CO)(5))(0.7)](0.5)}(n) (5), {[NP(O2C12H8)](0.5)[NP(O-C6H4-CO2Pr")(O-C6H4N-W(CO)(5))](0.4)}(n) (6a), and {[NP(O2C12H8)](0.5)[NP(O-C6H4-CO2Pr")(O-C6H4N)(W(CO)(5))(0.4)](0.4)}(n) (6b), that have been fully characterized by IR and NMR spectroscopies. The thermal properties (TGA and DSC) of the polymeric complexes showed that they are high glass transition materials that undergo a complete decarbonylation below 300 degrees C forming metal containing species that have a stabilizing effect on the polymeric matrices. The final residues up to 800 degrees C are of the order of 30-50%. | en |
Lenguage | dc.language.iso | en | en |
Publisher | dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | en |
Keywords | dc.subject | SUBSTITUTION-REACTIONS | en |
Título | dc.title | Synthesis and thermal decarbonylation of W(CO)(5) complexes supported by nitrile, pyridine or phosphine ligands to poly-spirophosphazene random copolymers carrying O-C6H5-CO2Pr groups | en |
Document type | dc.type | Artículo de revista | |