Competition between OH⋯O and multiple halogen–dipole interactions on the formation of intramolecular three-centred hydrogen bond in 3-acyl coumarins
Santos-Contreras, Rocío J.; Martínez-Martínez, Francisco J.; Mancilla-Margalli, N. Alejandra; Peraza-Campos, Ana L.; Morín-Sánchez, Luis M.; García-Báez, Efrén V.; Padilla-Martínez, Itzia I.; CrystEngComm 11 (2009) 1451–; doi:10.1039/b818309k

data_7200567
_publ_section_title
;
 Competition between OH&#x22EF;O and multiple halogen--dipole
 interactions on the formation of intramolecular three-centred hydrogen
 bond in 3-acyl coumarins
;
_journal_issue                   7
_journal_name_full               CrystEngComm
_journal_page_first              1451
_journal_paper_doi               10.1039/b818309k
_journal_volume                  11
_journal_year                    2009
_chemical_formula_moiety         'C12 H10 Cl N O4'
_chemical_formula_sum            'C12 H10 Cl N O4'
_chemical_formula_weight         267.66
_chemical_name_common
6-chloro-N-(2-hydroxyethyl)-2-oxo-2H-chromene-3-carboxamide
_chemical_name_systematic
;
6-chloro-N-(2-hydroxyethyl)-2-oxo-2H-chromene-3-carboxamide
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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
_cell_angle_beta                 91.873(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.3567(5)
_cell_length_b                   22.078(2)
_cell_length_c                   9.3087(8)
_cell_measurement_reflns_used    200
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      20
_cell_volume                     1100.31(17)
_computing_cell_refinement       'SAINT (Bruker, 2004)'
_computing_data_collection       'APEX II (Bruker, 2004)'
_computing_data_reduction        'SAINT (Bruker, 2004)'
_computing_molecular_graphics    'SHELXTL (Bruker, 2008)'
_computing_publication_material
'SHELXL97 (Sheldrick, 1997) and WINGX-2003 (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device       'Bruker SMART area detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0264
_diffrn_reflns_av_sigmaI/netI    0.0201
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            12432
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.33
_diffrn_reflns_theta_min         1.84
_diffrn_standards_decay_%        5
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.353
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.616
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       square
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.438
_refine_diff_density_min         -0.262
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.096
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         2629
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.389
_refine_ls_R_factor_all          0.0384
_refine_ls_R_factor_gt           0.0372
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0423P)^2^+0.7991P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0916
_refine_ls_wR_factor_ref         0.0925
_reflns_number_gt                2545
_reflns_number_total             2629
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b818309k.txt
_cod_data_source_block           alfrdosm
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_cell_volume        1100.29(17)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7200567