Polymorphism of griseofulvin: concomitant crystallization from the melt and a single crystal structure of a metastable polymorph with anomalously large thermal expansion.
Su, Yuan; Xu, Jia; Shi, Qin; Yu, Lian; Cai, Ting; Chemical communications (Cambridge, England) 54 (2018) 358–361; doi:10.1039/c7cc07744k

data_7120942
_publ_section_title
;
 Polymorphism of griseofulvin: concomitant crystallization from the melt
 and a single crystal structure of a metastable polymorph with anomalously
 large thermal expansion.
;
_journal_issue                   4
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              358
_journal_page_last               361
_journal_paper_doi               10.1039/c7cc07744k
_journal_volume                  54
_journal_year                    2018
_chemical_absolute_configuration ad
_chemical_formula_sum            'C17 H17 Cl O6'
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_chemical_melting_point          492
_chemical_name_systematic        griseofulvin
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_space_group_name_H-M_alt        'P 41'
_symmetry_space_group_name_Hall  'P 4w'
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;
2017-11-10 deposited with the CCDC.
2017-12-01 downloaded from the CCDC.
;
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'Re-crystallisation from solvent: ethanol'
_exptl_crystal_size_max          0.240
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;
 Flack x determined using 1359 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
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_refine_ls_shift/su_mean         0.000
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'w=1/[\s^2^(Fo^2^)+(0.0426P)^2^+0.0828P] where P=(Fo^2^+2Fc^2^)/3'
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_cod_data_source_block           20170817YKD_CT_298_0m_a
_cod_depositor_comments
'Adding full bibliography for 7120941--7120946.cif.'
_cod_original_cell_volume        1605.8(5)
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_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.938
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_shelx_res_checksum              50359