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. 2020 May 8;25(9):2216. doi: 10.3390/molecules25092216

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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¹H NMR of system Cp₂ZrCl₂-AlBuⁱ₃-MMAO-12 in C₇D₈ (T = 25 °C, intensity of upfield signals is increased): (a) [Zr]:[Al]:[MAO] = 1:5:0, T = −33 °C [32]; (b) [Zr]:[Al]:[MAO] = 1:5:0 [32]; (c) [Zr]:[Al]:[MAO] = 1:5:1.5; (d) [Zr]:[Al]:[MAO] = 1:5:5; (e) [Zr]:[Al]:[MAO] = 1:5:12.