ISSN:
0025-116X
Schlagwort(e):
Chemistry
;
Polymer and Materials Science
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
The synthesis of styrene polymers containing transition metals was achieved by reaction of different polystyrenes with Mt(CO)6 or (CH3—C≡N)3Mt(CO)3, (Mt = Cr, Mo, or W). Atactic, isotactic, and cross-linked polystyrene (with divinylbenzene) were employed. Organometallic polymers with good stability were only obtained by coordination of tricarbonylchromium groups to the phenyl rings of the polystyrene. Tricarbonylmolybdenum- and tricarbonyltungsten complexed polystyrene showed very poor stability and could not be isolated. The amount of chromium incorporated depends on the molecular structure of the polymers, the chromiumcarbonyl complex used in the reaction, and the reaction time. The reactivity of the tris(acetonitrile)tricarbonylmetal-complexes is higher than that of the hexacarbonylmetal-complexes and the addition reactivity of the polymers is in the order: atactic 〉 isotactic 〉 cross-linked polystyrene
Zusätzliches Material:
9 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/macp.1977.021780303
