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DOI: 10.1039/C9SC90095K (Correction) Chem. Sci., 2019, 10, 5851-5852

Heterodinuclear zinc and magnesium catalysts for epoxide/CO2 ring opening copolymerizations†

Gemma Trott a, Jennifer A. Garden b and Charlotte K. Williams *a
aChemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK. E-mail: charlotte.williams@chem.ox.ac.uk
bSchool of Chemistry, University of Edinburgh, EH9 3FJ, UK

Received 11th April 2019 , Accepted 11th April 2019

First published on 23rd May 2019

Abstract

Correction for ‘Heterodinuclear zinc and magnesium catalysts for epoxide/CO2 ring opening copolymerizations’ by Gemma Trott et al., Chem. Sci., 2019, DOI: 10.1039/c9sc00385a.

In the original manuscript, an error was made in Table 2 for entries 1–3. Incorrect TON and TOF values were reported for compounds 2b, 2c and 2e at a pressure of 1 bar. Also the PCHC selectivity values for 2b and 2c at 1 bar were incorrect. The correct TON, TOF and PCHC values for these compounds are shown below:
Table 2 Copolymerization reaction conditionsa
Cat. Catalyst (mol%) Temp. (°C) Pressure (bar) PCHCb (%) TONb TOFb (h−1) M n [Đ]b
a Reactions were carried out in a Parr high pressure vessel with an impeller at 20 bar. b See Table 1 and ESI for all data (Fig. S56–S60).
2b 0.1 120 1 >96 377 435 12[thin space (1/6-em)]280 [1.04]
5340 [1.13]
2c 0.1 120 1 >93 419 466 14[thin space (1/6-em)]490 [1.06]
5930 [1.15]
2e 0.1 120 1 >99 430 645 21[thin space (1/6-em)]760 [1.04]
9090 [1.15]
2c 0.01 120 20 >99 4415 8830 44[thin space (1/6-em)]400 [1.04]
21[thin space (1/6-em)]200 [1.05]
2c 0.005 120 20 >99 5435 1359 54[thin space (1/6-em)]380 [1.04]
26[thin space (1/6-em)]550 [1.04]

To highlight this update, the sentence in the original manuscript “For the Zn(II)/Mg(II) complexes, the best activity value reaches 654 h−1 which is at the upper end of values for the low pressure regime.10,14,15” on page 7 should now read “For the Zn(II)/Mg(II) complexes, the best activity value reaches 645 h−1 which is at the upper end of values for the low pressure regime.10,14,15”

Finally, a corrected version of Fig. 4 is also provided here to highlight the correct TOF value for complex 2e.


image file: c9sc90095k-f4.tif
Fig. 4 Illustration of the structures, activity and selectivity for some of the highest performing catalysts reported for CO2/CHO ROCOP.22,25,33,34,59,61

The original ESI was replaced by a correspondingly revised version on 16th May 2019 to reflect these changes.

The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.

Footnote

† Electronic supplementary information (ESI) available. See DOI: 10.1039/C9SC00385A
This journal is © The Royal Society of Chemistry 2019