ISSN:
1436-2449
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
,
Maschinenbau
,
Physik
Notizen:
Summary The group VIB metal carbonyls were found to promote the polycondensation of benzyl halides when induced by heat. Their catalytic activity decreases in the order: Mo ≫ W 〉 Cr. Phosphine ligands attached to the metal poison the catalytic activity of the system. Species such as (CO)3M(PhCH 2 + )Cl− are considered to be active in promoting polymerization. The final polybenzyls have a branched, polycondensed structure of moderate molecular weight.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00265312