Crystal structure of 2,2'-((1,4-butylene)dioxybis(nitriloethylidyne)) diphenol, C~20~H~24~N~2~O~4~
Dong, Wen-Kui; He, Xue-Ni; Dong, Chen-Ming; Wang, Li; Zhong, Jin-Kui; Chen, Xiao; Yu, Tian-Zhi; Zeitschrift für Kristallographie - New Crystal Structures 222 (2007) 289–290; doi:

data_8102154
_publ_section_title
;
Crystal structure of 2,2'-((1,4-butylene)dioxybis(nitriloethylidyne))
diphenol, C~20~H~24~N~2~O~4~
;
_journal_issue                   3
_journal_name_full
'Zeitschrift f\"ur Kristallographie - New Crystal Structures'
_journal_page_first              289
_journal_page_last               290
_journal_volume                  222
_journal_year                    2007
_chemical_formula_sum            'C20 H24 N2 O4'
_chemical_formula_weight         356.41
_chemical_name_systematic
; 
 2,2'-((1,4-butylene)dioxybis(nitrilethylidyne))diphenol
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 119.884(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.441(3)
_cell_length_b                   7.7452(18)
_cell_length_c                   13.875(2)
_cell_measurement_reflns_used    1799
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.156
_cell_measurement_theta_min      2.417
_cell_volume                     1811.4(6)
_computing_cell_refinement       'Bruker SMART (Bruker, 1998)'
_computing_data_collection       'Bruker SMART (Bruker, 1998)'
_computing_data_reduction        'Bruker SAINT (Bruker, 2003)'
_computing_molecular_graphics    'Bruker SHELXTL (Sheldrick, 1997)'
_computing_publication_material  'Bruker SHELXTL (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART CCD'
_diffrn_measurement_method       phi/omega
_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  0.0437
_diffrn_reflns_av_sigmaI/netI    0.0388
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            4508
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.42
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  0.9810
_exptl_absorpt_correction_T_min  0.9506
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.307
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.175
_refine_diff_density_min         -0.225
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     118
_refine_ls_number_reflns         1599
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0669
_refine_ls_R_factor_gt           0.0486
_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^)+(0.0694P)^2^+0.9036P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1222
_refine_ls_wR_factor_ref         0.1396
_reflns_number_gt                1203
_reflns_number_total             1599
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1267-2049.cff
_cod_data_source_block           070125e
_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 1555 2011-01-17 13:19:09Z saulius 
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_cod_original_sg_symbol_H-M      C12/c1
_cod_database_code               8102154