Interplay of Weak Interactions and Structural Features in the Solid State Self-Assembly of Symmetric Diamides
Feng, Zheng; Fan, Ailong; Valiyaveettil, Suresh; Vittal, Jagadese J.; Crystal Growth & Design 3 (2003) 555–; doi:10.1021/cg034045y

data_4505713
_publ_section_title
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 Interplay of Weak Interactions and Structural Features in the Solid State
 Self-Assembly of Symmetric Diamides
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_journal_issue                   4
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              555
_journal_paper_doi               10.1021/cg034045y
_journal_volume                  3
_journal_year                    2003
_chemical_formula_sum            'C51 H70 N2 O4'
_chemical_formula_weight         775.09
_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                 95.1510(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.1142(11)
_cell_length_b                   13.4289(7)
_cell_length_c                   16.6656(9)
_cell_measurement_reflns_used    4616
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      2.06
_cell_volume                     4706.3(4)
_computing_cell_refinement       'Bruker AXS, SAINT'
_computing_data_collection       'Bruker AXS, SMART'
_computing_data_reduction        'Bruker AXS, SAINT'
_computing_molecular_graphics    'Bruker AXS, SHELXTL'
_computing_publication_material  'Bruker AXS, SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.972
_diffrn_measured_fraction_theta_max 0.972
_diffrn_measurement_method       '\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  0.0523
_diffrn_reflns_av_sigmaI/netI    0.0778
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            21202
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.80
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_T_max  0.9806
_exptl_absorpt_correction_T_min  0.3600
_exptl_absorpt_correction_type   'sadabs (Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.094
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'platy with hexagonal faces'
_exptl_crystal_F_000             1688
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.46
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.342
_refine_diff_density_min         -0.259
_refine_diff_density_rms         0.042
_refine_ls_extinction_coef       0.0004(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     395
_refine_ls_number_reflns         8053
_refine_ls_number_restraints     400
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.2270
_refine_ls_R_factor_gt           0.1034
_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^)+(0.1996P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3045
_refine_ls_wR_factor_ref         0.3756
_reflns_number_gt                3104
_reflns_number_total             8053
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg034045ysi20030326_110439.cif
_cod_data_source_block           99173
_cod_depositor_comments
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The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
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_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4505713