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Volumn 30, Issue 6, 2011, Pages 1695-1709

Synthesis of imino-enamido hafnium and zirconium complexes: A new family of olefin polymerization catalysts with ultrahigh-molecular-weight capabilities

Author keywords

[No Author keywords available]

Indexed keywords

1-OCTENE; AMIDO COMPLEXES; AS-LIGANDS; COMPUTATIONAL EVALUATION; COMPUTATIONAL RESULTS; CONSTRAINED GEOMETRY CATALYSTS; DIETHYLZINC; EFFECTIVE CHAIN TRANSFER; ENAMINES; HAFNIUM CATALYSTS; HAFNIUM COMPLEXES; MOLECULAR WEIGHT POLYMERS; NITROGEN-CONTAINING MOLECULES; OLEFIN POLYMERIZATION; OLEFIN POLYMERIZATION CATALYSTS; POLYMER MOLECULAR WEIGHT; POLYMERIZATION CONDITIONS; POLYMERIZATION REACTION; POLYOLEFIN CATALYSTS; PRIOR EXPERIENCE; THERMAL STABILITY; ULTRA-HIGH MOLECULAR WEIGHT; ZIRCONIUM COMPLEXES;

EID: 79952905265     PISSN: 02767333     EISSN: 15206041     Source Type: Journal    
DOI: 10.1021/om101207a     Document Type: Article
Times cited : (54)

References (87)
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    • The relative energies (kcal/mol) discussed in the text are enthalpies. DFT ground-state energies for i -Pr- and DIP-based derivatives for compounds shown in Scheme 4 are presented in the Supporting Information.
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    • Structures and energies of various cyclic 1,2-keto-enamines/1,2-keto- imines and 1,2-keto-enol/1,2-diketones are included in the Supporting Information.
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    • w by decreasing the reactor temperature, but this is usually not a practical and economical solution.
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    • The ratio of molecular weights of polymers generated by 21 and 3 is 3.6, which is measurably higher than that obtained from end group analysis (2.3). This difference is most likely due to the slightly higher reactivity of 3 toward hydrogen compared to 21
    • The ratio of molecular weights of polymers generated by 21 and 3 is 3.6, which is measurably higher than that obtained from end group analysis (2.3). This difference is most likely due to the slightly higher reactivity of 3 toward hydrogen compared to 21.


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