Crystal structure of bis(4-hydroxybenzaldehyde) O,O'-(butane-1,4-diyl)dioxime, C18H20N2O4
Wen-Kui Dong; Jiao Wang; Lan-Qin Chai; Li Zhao; Yu-Hua Yang; Li Wang; Jia Zhang; Zeitschrift für Kristallographie - New Crystal Structures 227 (2012) 171–; doi:

data_8103363
_publ_contact_author
;
   Wen-Kui Dong
;
_publ_section_title
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 Crystal structure of bis(4-hydroxybenzaldehyde)
 O,O'-(butane-1,4-diyl)dioxime, C18H20N2O4
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_journal_issue                   2
_journal_name_full
'Zeitschrift f\"ur Kristallographie - New Crystal Structures'
_journal_page_first              171
_journal_volume                  227
_journal_year                    2012
_chemical_formula_moiety         'C18 H20 N2 O4'
_chemical_formula_sum            'C18 H20 N2 O4'
_chemical_formula_weight         328.36
_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                 100.7750(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   20.195(2)
_cell_length_b                   5.1601(4)
_cell_length_c                   8.3019(7)
_cell_measurement_reflns_used    1091
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      25.189
_cell_measurement_theta_min      3.081
_cell_volume                     849.87(13)
_computing_cell_refinement       'Bruker SMART(Siemens, 1996)'
_computing_data_collection       'Bruker SMART (Siemens, 1996)'
_computing_data_reduction        'Bruker SAINT (Siemens, 1996)'
_computing_molecular_graphics    'Bruker SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'Bruker SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'smart 1000 CCD area detector'
_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  0.0274
_diffrn_reflns_av_sigmaI/netI    0.0311
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            4034
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         3.08
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  0.9819
_exptl_absorpt_correction_T_min  0.9617
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'sadabs (Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.283
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block-like
_exptl_crystal_F_000             348
_exptl_crystal_size_max          0.43
_exptl_crystal_size_mid          0.41
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.333
_refine_diff_density_min         -0.179
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1493
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0754
_refine_ls_R_factor_gt           0.0443
_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^)+(0.0624P)^2^+0.2117P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1128
_refine_ls_wR_factor_ref         0.1378
_reflns_number_gt                935
_reflns_number_total             1493
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1267-3721.cff
_cod_data_source_block           global
_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_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               8103363