Flavonoids from Erythrina schliebenii.
Nyandoro, Stephen S.; Munissi, Joan J. E.; Kombo, Msim; Mgina, Clarence A.; Pan, Fangfang; Gruhonjic, Amra; Fitzpatrick, Paul; Lu, Yu; Wang, Bin; Rissanen, Kari; Erdélyi, Máté; Journal of natural products 80 (2017) 377–383; doi:10.1021/acs.jnatprod.6b00839

data_1545126
_publ_section_title
;
 Flavonoids from Erythrina schliebenii.
;
_journal_issue                   2
_journal_name_full               'Journal of natural products'
_journal_page_first              377
_journal_page_last               383
_journal_paper_doi               10.1021/acs.jnatprod.6b00839
_journal_volume                  80
_journal_year                    2017
_chemical_formula_moiety         'C19 H18 O6'
_chemical_formula_sum            'C19 H18 O6'
_chemical_formula_weight         342.33
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2016-08-08
_audit_creation_method
;
Olex2 1.2
(compiled 2016.02.19 svn.r3266 for OlexSys, GUI svn.r5155)
;
_cell_angle_alpha                90
_cell_angle_beta                 113.850(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.8767(3)
_cell_length_b                   9.3428(3)
_cell_length_c                   16.2435(5)
_cell_measurement_reflns_used    2957
_cell_measurement_temperature    173.00(10)
_cell_measurement_theta_max      28.700
_cell_measurement_theta_min      0.407
_cell_volume                     1648.49(9)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_diffrn_ambient_temperature      173.00(10)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker Kappa CCD'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0277
_diffrn_reflns_av_unetI/netI     0.0458
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.989
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            8571
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.989
_diffrn_reflns_theta_full        25.250
_diffrn_reflns_theta_max         28.865
_diffrn_reflns_theta_min         3.411
_exptl_absorpt_coefficient_mu    0.103
_exptl_absorpt_correction_T_max  0.7458
_exptl_absorpt_correction_T_min  0.6700
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.0612 before and 0.0535 after correction.
The Ratio of minimum to maximum transmission is 0.8984.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.379
_exptl_crystal_description       block
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.305
_refine_diff_density_min         -0.212
_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     230
_refine_ls_number_reflns         4286
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0655
_refine_ls_R_factor_gt           0.0479
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0407P)^2^+0.6572P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1104
_refine_ls_wR_factor_ref         0.1193
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3322
_reflns_number_total             4286
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            np6b00839_si_005.cif
_cod_data_source_block           22
_cod_depositor_comments
'Adding full bibliography for 1545126--1545129.cif.'
_cod_database_code               1545126
_shelx_estimated_absorpt_t_max   0.972
_shelx_estimated_absorpt_t_min   0.948
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C6(H6), C8(H8), C11(H11), C12(H12), C14(H14), C15(H15)
2.b Idealised Me refined as rotating group:
 C16(H16A,H16B,H16C), C17(H17A,H17B,H17C), C18(H18A,H18B,H18C), C19(H19A,H19B,
 H19C)
;
_shelx_res_checksum              21822
_shelx_hkl_checksum              24611
_shelx_shelxl_version_number     2016/4
_olex2_submission_special_instructions 'No special instructions were received'