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4
(
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6
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ASSOCIATED CONTENT
Supporting Information
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2
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358−2364.
*
S
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Cambridge Crystallographic Data Centre, 12 Union Road,
Cambridge CB2 1EZ, UK; fax: +44 1223 336033.
AUTHOR INFORMATION
■
ORCID
Notes
The authors declare no competing financial interest.
ACKNOWLEDGMENTS
Financial support by the Deutsche Forschungsgemeinschaft is
gratefully acknowledged.
■
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