Synthesis of a novel axially chiral amphiphile and study on its two and three dimensional assembly behavior
Chun-li Bai; Shi-Zhao Kang; Jun Lu; Li-Jun Wan; Chen Wang; Sai-Long Xu; Qing-Dao Zeng; Chemical communications (Cambridge, England)  (2003) –; doi:10.1039/b302572a

data_7103720
_publ_section_title
;
Synthesis of a novel axially chiral amphiphile and
study on its two and three dimensional assembly behavior
;
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_paper_doi               10.1039/b302572a
_journal_year                    2003
_chemical_formula_sum            'C42 H54 O6'
_chemical_formula_weight         654.85
_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
;
hydrogen atoms are generated by HFIX
instructions' or 'difmap'
;
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.78(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.539(3)
_cell_length_b                   17.754(4)
_cell_length_c                   13.718(3)
_cell_measurement_reflns_used    30226
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.26
_cell_volume                     3782.7(13)
_computing_cell_refinement
;
Molecular Structure Corporation (1994)
MSC/AFC Diffractometer Control Software
MSC, 3200 Research Forest Drive, The
Woodlands, TX 77381 USA.
;
_computing_data_collection
;
Molecular Structure Corporation (1994)
MSC/AFC Diffractometer Control Software
MSC, 3200 Research Forest Drive, The
Woodlands, TX 77381, USA.
;
_computing_data_reduction
;
Sheldrick, G. M. (1997) SHELXS97, Program
for the Solution of Crystal Structure,
University of Gottingen, Germany.
;
_computing_molecular_graphics
;
Interactive Molecular Graphics XP, Virsion
4.2 for MSDOS (1990), Siemens Analytical
X-ray Instruments Inc., Madison, Wisconsin,
USA.
;
_computing_publication_material
;
Sheldrick, G. M. (1997) SHELXL97, Program
for the refinement of Crystal Structure,
University of Gottingen, Germany.
;
_computing_structure_refinement
;
Sheldrick, G. M. (1997) SHELXL97, Program
for the Refinement of Crystal Structure,
University of Gottingen, Germany.
;
_computing_structure_solution
;
Sheldrick, G. M. (1997) SHELXS97, Program
for the Solution of Crystal Structure,
University of Gottingen, Germany.
;
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean '100x100 microns'
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Rigaku RAXIS RAPID IP'
_diffrn_measurement_method       Oscillation
_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  0.0624
_diffrn_reflns_av_sigmaI/netI    0.1431
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            30226
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.26
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.985
_exptl_absorpt_correction_T_min  0.635
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.150
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1416
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.264
_refine_diff_density_min         -0.223
_refine_diff_density_rms         0.028
_refine_ls_extinction_coef       0.00215(8)
_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   0.960
_refine_ls_hydrogen_treatment
;
hydrogen coordinates ride on the coordinates
of the previous atom, the isotropic U values
are 1.2 OR 1.5 time over the U values of the
previous atom.
;
_refine_ls_matrix_type           full
_refine_ls_number_parameters     434
_refine_ls_number_reflns         8609
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.960
_refine_ls_R_factor_all          0.2315
_refine_ls_R_factor_gt           0.0563
_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^)+(0.0063P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0747
_refine_ls_wR_factor_ref         0.0883
_reflns_number_gt                2047
_reflns_number_total             8609
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b302572a.txt
_cod_data_source_block           a
_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.

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' 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_sg_symbol_H-M      P2(1)/c
_cod_database_code               7103720