Intermolecular interactions and unexpected isostructurality in the crystal structures of the dichlorobenzaldehyde isomers
Solanko, Katarzyna A.; Bond, Andrew D.; Acta Crystallographica Section B 67 (2011) 437–445; doi:10.1107/S0108768111035786

data_2104976
_publ_section_title
;
 Intermolecular interactions and unexpected isostructurality in the
 crystal structures of the dichlorobenzaldehyde isomers
;
_journal_coeditor_code           GP5044
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              437
_journal_page_last               445
_journal_paper_doi               10.1107/S0108768111035786
_journal_volume                  67
_journal_year                    2011
_chemical_formula_moiety         'C7 H4 Cl2 O'
_chemical_formula_sum            'C7 H4 Cl2 O'
_chemical_formula_weight         175.00
_chemical_name_common            3,4-dichlorobenzaldehyde
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 91.849(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   3.8094(3)
_cell_length_b                   14.8887(13)
_cell_length_c                   6.2014(5)
_cell_measurement_reflns_used    5012
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      25.88
_cell_measurement_theta_min      2.74
_cell_volume                     351.54(5)
_computing_cell_refinement       'SAINT v.7.06a (Bruker, 2003)'
_computing_data_collection       'APEX2 v.1.0-22 (Bruker Nonius, 2004)'
_computing_data_reduction        'SAINT v.7.06a'
_computing_molecular_graphics    'SHELXTL v.6.10'
_computing_publication_material  'SHELXTL v.6.10'
_computing_structure_refinement  'SHELXTL v.6.10'
_computing_structure_solution    'SHELXTL v.6.10 (Sheldrick, 2000)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Bruker-Nonius X8APEX-II CCD'
_diffrn_measurement_method       'thin-slice \w and \f 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  0.0263
_diffrn_reflns_av_sigmaI/netI    0.0235
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            6778
_diffrn_reflns_theta_full        25.96
_diffrn_reflns_theta_max         25.96
_diffrn_reflns_theta_min         3.56
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.837
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.881
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS v.2.10 (Sheldrick, 2003)
 Ratio of minimum to maximum apparent transmission:  0.880814
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.653
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             176
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.237
_refine_diff_density_min         -0.220
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.03(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     91
_refine_ls_number_reflns         1272
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.085
_refine_ls_R_factor_all          0.0262
_refine_ls_R_factor_gt           0.0240
_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^)+(0.0295P)^2^+0.0817P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0547
_refine_ls_wR_factor_ref         0.0553
_reflns_number_gt                1220
_reflns_number_total             1272
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gp5044.cif
_cod_data_source_block           5
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               2104976
_cod_database_fobs_code          2104976