2',6'-Dihydroxyflavone and a New Polymorph of 2'-Hydroxyflavonol
Molins, E.; Miravitlles, C.; Wallet, J.-C.; Gaydou, E. M.; Acta Crystallographica Section C 52 (1996) 925–929; doi:10.1107/S0108270195013679

data_2004805
_publ_section_title
;
 2',6'-Dihydroxyflavone and a New Polymorph of 2'-Hydroxyflavonol
;
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              925
_journal_page_last               929
_journal_paper_doi               10.1107/S0108270195013679
_journal_volume                  52
_journal_year                    1996
_chemical_formula_sum            'C15 H10 O4'
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_cell_angle_gamma                90
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_cell_length_c                   23.091(5)
_cell_measurement_reflns_used    23
_cell_measurement_temperature    294
_cell_measurement_theta_max      18
_cell_measurement_theta_min      12
_cell_volume                     1141.4(5)
_diffrn_measurement_device       'Enraf-Nonius CAD-4'
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_diffrn_radiation_type           MoK\a
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_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            3993
_diffrn_reflns_theta_max         30.4
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_exptl_absorpt_correction_type   'empirical via \y scan (MolEN; Fair, 1990)'
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_exptl_crystal_size_mid          0.30
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    refU
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_refine_ls_number_reflns         1645
_refine_ls_R_factor_obs          0.040
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_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 4F~o~/\s(F~o~)'
_refine_ls_weighting_scheme      calc
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_reflns_number_observed          1645
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_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'w = 4F~o~/\s(F~o~)' was changed
to 'calc'. New tag '_refine_ls_weighting_details' was created. The
value of the new tag was set to 'w = 4F~o~/\s(F~o~)'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        1141.3
_cod_original_sg_symbol_H-M      'P 21/n'
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