Structures of alkyl-substituted Tröger's base derivatives illustrate the importance of <i>Z</i>' for packing in the absence of strong crystal synthons
Vande Velde, Christophe M. L.; Tylleman, Benoît; Zeller, Matthias; Sergeyev, Sergey; Acta Crystallographica Section B 66 (2010) 472–481; doi:10.1107/S0108768110021981

data_2104803
_publ_section_title
;
 Structures of alkyl-substituted Tr\"oger's base derivatives illustrate
 the importance of <i>Z</i>' for packing in the absence of strong
 crystal synthons
;
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              472
_journal_page_last               481
_journal_paper_doi               10.1107/S0108768110021981
_journal_volume                  66
_journal_year                    2010
_chemical_formula_moiety         'C21 H26 N2'
_chemical_formula_sum            'C21 H26 N2'
_chemical_formula_weight         306.44
_chemical_melting_point          384.0(5)
_chemical_name_common            'isopropyl Tr\:oger's base'
_chemical_name_systematic
;
 2,8-bis(i-propyl)-6H,12H-5,11-methanodibenzo[bf][1,5]diazocine
;
_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                 104.873(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.985(3)
_cell_length_b                   11.195(2)
_cell_length_c                   10.7460(18)
_cell_measurement_reflns_used    3270
_cell_measurement_temperature    148(2)
_cell_measurement_theta_max      28.59
_cell_measurement_theta_min      2.30
_cell_volume                     1742.3(6)
_computing_cell_refinement       'Bruker APEXII'
_computing_data_collection       'Bruker APEXII'
_computing_data_reduction        'Bruker APEXII'
_computing_molecular_graphics    'ORTEP, Mercury'
_computing_publication_material  'WinGX, PLATON'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      148(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.974
_diffrn_measurement_device_type  'Bruker Smart 1000'
_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  0.0376
_diffrn_reflns_av_sigmaI/netI    0.0467
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            17929
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         30.35
_diffrn_reflns_theta_min         1.41
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6232
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS-2008/1'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.168
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.69
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.208
_refine_diff_density_min         -0.181
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     275
_refine_ls_number_reflns         5112
_refine_ls_number_restraints     10
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0977
_refine_ls_R_factor_gt           0.0468
_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^)+(0.0604P)^2^+0.1599P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1146
_refine_ls_wR_factor_ref         0.1350
_reflns_number_gt                2968
_reflns_number_total             5112
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ry5032.cif
_cod_data_source_block           gamma3a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '383.5-384.5' was changed to
'384.0(5)' - the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 
;
_cod_original_cell_volume        1742.3(5)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               2104803
_cod_database_fobs_code          2104803