| abstract |
Transition metal compounds of the formulae M1A3(1) wherein M1 is scandium, yttrium, chromium, or rare earth metal, and A is 2-dialkylaminobenzyl or 2-dialkylaminomethylphenyl, or a lower alkyl derivative thereof, M2A2(2) wherein M2 is Cr or Mo and M3A4(3) wherein M3 is Ti, Zr or Hf ARE USEFUL AS COMPONENTS OF COORDINATION CATALYSTS FOR OLEFIN POLYMERIZATION. Lithium compounds of the formula LiA are intermediates used in preparing the above compounds. All of the above compounds are also useful as oxygen-scavenging agents. |