Insight into the Phase Transformation among Various Solid Forms of Baicalein
Zhu, Bingqing; Wang, Jian-Rong; Mei, Xuefeng; Crystal Growth & Design 15 (2015) 4959–; doi:10.1021/acs.cgd.5b00858

data_4513556
_publ_section_title
;
 Insight into the Phase Transformation among Various Solid Forms of
 Baicalein
;
_journal_issue                   10
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              4959
_journal_paper_doi               10.1021/acs.cgd.5b00858
_journal_volume                  15
_journal_year                    2015
_chemical_formula_sum            'C15 H10 O5.5'
_chemical_formula_weight         278.23
_chemical_name_common            4
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 97.830(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   3.8097(2)
_cell_length_b                   19.9030(11)
_cell_length_c                   16.2375(8)
_cell_measurement_reflns_used    6169
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      54.87
_cell_measurement_theta_min      4.50
_cell_volume                     1219.72(11)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1377
_diffrn_reflns_av_sigmaI/netI    0.0991
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            17045
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.63
_exptl_absorpt_coefficient_mu    0.117
_exptl_absorpt_correction_T_max  0.9893
_exptl_absorpt_correction_T_min  0.9684
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.515
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.206
_refine_diff_density_min         -0.179
_refine_diff_density_rms         0.049
_refine_ls_extinction_coef       0.010(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.976
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     192
_refine_ls_number_reflns         2165
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.976
_refine_ls_R_factor_all          0.1593
_refine_ls_R_factor_gt           0.0602
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0550P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1006
_refine_ls_wR_factor_ref         0.1334
_reflns_number_gt                1002
_reflns_number_total             2165
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg5b00858_si_003.cif
_cod_data_source_block           D:\2014354a\mo_2014354_0ma.CIF
_cod_depositor_comments
'Adding full bibliography for 4513554--4513556.cif.'
_cod_original_sg_symbol_H-M      P21/c
_cod_original_formula_sum        'C15 H10 O5.50'
_cod_database_code               4513556