In:
Journal of Polymer Science Part A: Polymer Chemistry, Wiley, Vol. 46, No. 2 ( 2008-01-15), p. 585-611
Abstract:
Series of Fe(II) and Fe(III) tridentate bis(imino)pyridine complexes without nitrilo groups 2–6 and with nitrilo groups 7–13 were synthesized. According to X‐ray analysis, the introduction of nitrilo groups in para ‐ and ortho ‐positions tends to result in shorter axial FeN bonds. Both types of complexes, 2–6 and 9–13 , afforded very productive catalysts for the production of α‐olefins with higher K values and better linearity of Schultz–Flory distribution α‐olefins than the parent methyl substituted Fe(II) complex 1 . Noticeably, the complexes functionalized with a para ‐nitrilo group 9–13 tend to make α‐olefins with higher K values of the Schultz–Flory distribution, more ideal distributions, and less of the heavier insoluble fractions of α‐olefins than corresponding nonsymmetrically substituted complexes without para ‐nitrilo groups 2–6 . Statistically significant correlations were obtained between % solids of total α‐olefins and the blocked solid angle fraction in the + z hemisphere ( $ R_{{\rm adj}}^2 $ = 51.3%, p = 0.012) and between catalyst productivity and total blocked solid angle fraction ( $ R_{{\rm adj}}^2 $ = 43.5%, p = 0.023). The modest values of $ R_{{\rm adj}}^2 $ show that, while steric effects are significant, they are not the sole factor determining catalyst performance. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 585–611, 2008
Type of Medium:
Online Resource
ISSN:
0887-624X
,
1099-0518
Language:
English
Publisher:
Wiley
Publication Date:
2008
detail.hit.zdb_id:
3004641-5
detail.hit.zdb_id:
1473076-5
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