Chiral crystals from porphyrinoids possessing a very low racemization barrier

The unique solid-state NMR technique Very Fast MAS with a sample spinning rate over 40 kHz was employed for screening and selection of crystals of porphyrinoid derivatives - corroles, suitable for X-ray diffraction studies. The host-guest approach and formation of inclusion complexes were efficient...

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Published in:CrystEngComm 2016-01, Vol.18 (2), p.3561-3565
Main Authors: niechowska, Justyna, Paluch, Piotr, Bujacz, Grzegorz, Górecki, Marcin, Frelek, Jadwiga, Gryko, Daniel T, Potrzebowski, Marek J
Format: Article
Language:English
Subjects:
Barriers
Broken symmetry
Crystals
Derivatives
Diffraction
Distortion
Racemization
X-rays
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cited_by cdi_FETCH-LOGICAL-c286t-d15cd822289ccb1697138f6b0d4653fc9c73cfbd534e3c5d5f60260c7735f0603
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creator niechowska, Justyna
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description The unique solid-state NMR technique Very Fast MAS with a sample spinning rate over 40 kHz was employed for screening and selection of crystals of porphyrinoid derivatives - corroles, suitable for X-ray diffraction studies. The host-guest approach and formation of inclusion complexes were efficient methods for the synthesis of chiral crystals from free base corroles possessing an extremely low racemization barrier. Our data show that the intrinsic features of corroles, including the dihedral angle saddling effect and distortion of the macrocyclic rings out of planarity, have no crucial influence on the tendency for symmetry breaking. A novel chiral crystal of 5,10,15-tris(pentafluorophenyl)corrole was obtained and characterized by various methods including X-ray diffraction, NMR spectroscopy and circular dichroism spectroscopy.
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source Royal Society of Chemistry:Jisc Collections:Royal Society of Chemistry Read and Publish 2022-2024 (reading list)
subjects Barriers
Broken symmetry
Crystals
Derivatives
Diffraction
Distortion
Racemization
X-rays
title Chiral crystals from porphyrinoids possessing a very low racemization barrier
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