Organometallic polymer

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From heavy metal or aluminum reactant having at least one...

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528397, C08G 7900, C08G 8300

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active

048733040

ABSTRACT:
Metallocene polymers characterized as being in a stacked configuration where the monomeric units are constrained to interact with one another across their cofacial cyclopentadienyl ring surfaces, and having the general structure ##STR1## where M represents the metal and n is an integer of 2 or greater. The preparative method involves the coupling reaction between a zincated metallocene and a dihalogen-substituted aromatic, in the presence of a catalyst. The mixture is refluxed, and the resultant polymer is taken up in organic solvent, washed, dried, separated and purified.

REFERENCES:
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patent: 3504052 (1970-03-01), Neuse et al.
Lee, M.-T. et al., Organometallics 3:539-547, 1985.
Katz, T. J. and J. Pesti, J. Am. Chem. Soc. 104:346-347, 1982.
Neuse, E. W. and L. Bednarik, Transition Metal Chemistry 4:87-94, 1979.
Felkin, H. and G. Swierczewski, Tetrahedron 31:2735-2748, 1975.
Sudhakar, A., T. J. Katz and B.-W. Yang, J. Am. Chem. Soc. 108:2790, 1986.

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