Molecular Compasses and Gyroscopes with Polar Rotors: Synthesis and Characterization of Crystalline Forms
Zaira Dominguez; Tinh-A. V. Khuong; Hung Dang; Carlos N. Sanrame; Jose E. Nuñez; Miguel A. Garcia-Garibay; Journal of the American Chemical Society 125 (2003) 8827–8837; doi:10.1021/ja035274b

data_4113950
_publ_section_title
;
 Molecular Compasses and Gyroscopes with Polar Rotors: Synthesis and
 Characterization of Crystalline Forms
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8827
_journal_page_last               8837
_journal_paper_doi               10.1021/ja035274b
_journal_volume                  125
_journal_year                    2003
_chemical_formula_sum            'C48 H35 N'
_chemical_formula_weight         625.77
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                62.706(3)
_cell_angle_beta                 71.071(3)
_cell_angle_gamma                84.875(3)
_cell_formula_units_Z            1
_cell_length_a                   9.2966(16)
_cell_length_b                   10.5467(18)
_cell_length_c                   10.5979(18)
_cell_measurement_reflns_used    1628
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      23.8655
_cell_measurement_theta_min      2.32850
_cell_volume                     871.3(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.726
_diffrn_measured_fraction_theta_max 0.726
_diffrn_measurement_device_type  '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  0.0169
_diffrn_reflns_av_sigmaI/netI    0.0399
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            4726
_diffrn_reflns_theta_full        28.24
_diffrn_reflns_theta_max         28.24
_diffrn_reflns_theta_min         2.18
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7913
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   Sadabs(Bruker)
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.193
_exptl_crystal_description       plate
_exptl_crystal_F_000             330
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.127
_refine_diff_density_min         -0.118
_refine_diff_density_rms         0.027
_refine_ls_extinction_coef       0.018(4)
_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   1.008
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     227
_refine_ls_number_reflns         3129
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.0674
_refine_ls_R_factor_gt           0.0389
_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^)+(0.0509P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0966
_refine_ls_wR_factor_ref         0.1068
_reflns_number_gt                2020
_reflns_number_total             3129
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja035274bsi20030321_025011.cif
_cod_data_source_block           gg701
_cod_database_code               4113950