Diversity-Oriented Synthesis of Chromenes via Metal-Free Domino Reactions from Ketones and Phenols.
Xue, Wei-Jian; Li, Qi; Gao, Fang-Fang; Zhu, Yan-Ping; Wang, Jun-Gang; Zhang, Wei; Wu, An-Xin; ACS combinatorial science 14 (2012) 478–483; doi:10.1021/co3000506

data_4506578
_publ_section_title
;
 Diversity-Oriented Synthesis of Chromenes via Metal-Free Domino Reactions
 from Ketones and Phenols.
;
_journal_issue                   8
_journal_name_full               'ACS combinatorial science'
_journal_page_first              478
_journal_page_last               483
_journal_paper_doi               10.1021/co3000506
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C15 H20 O3'
_chemical_formula_weight         248.31
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            24
_cell_length_a                   22.398(3)
_cell_length_b                   15.1572(17)
_cell_length_c                   23.824(3)
_cell_measurement_reflns_used    9988
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      24.21
_cell_measurement_theta_min      2.36
_cell_volume                     8088.0(17)
_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      200(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0564
_diffrn_reflns_av_sigmaI/netI    0.0335
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            54184
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.71
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.9917
_exptl_absorpt_correction_T_min  0.9867
_exptl_absorpt_correction_type   none
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3216
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.614
_refine_diff_density_min         -0.508
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     556
_refine_ls_number_reflns         7109
_refine_ls_number_restraints     62
_refine_ls_restrained_S_all      1.091
_refine_ls_R_factor_all          0.0791
_refine_ls_R_factor_gt           0.0569
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1041P)^2^+2.4678P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1651
_refine_ls_wR_factor_ref         0.1780
_reflns_number_gt                5268
_reflns_number_total             7109
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            co3000506_si_003.cif
_cod_data_source_block           t
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        8088.1(16)
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               4506578