Dimorphism of ethyl 1,4-dihydro-2,4,6-triphenylpyridine-3-carboxylate
Bolte, Michael; Acta Crystallographica Section C 57 (2001) 772–774; doi:10.1107/S0108270101005546

data_2012055
_publ_section_title
;
 Dimorphism of ethyl 1,4-dihydro-2,4,6-triphenylpyridine-3-carboxylate
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              772
_journal_page_last               774
_journal_paper_doi               10.1107/S0108270101005546
_journal_volume                  57
_journal_year                    2001
_chemical_formula_moiety         'C26 H23 N O2'
_chemical_formula_sum            'C26 H23 N O2'
_chemical_formula_weight         381.45
_chemical_name_systematic
;
Ethyl 1,4-dihydro-2,4,6-triphenylpyridine-3-carboxylate
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_audit_creation_method           SHELXL
_cell_angle_alpha                73.5340(10)
_cell_angle_beta                 80.8260(10)
_cell_angle_gamma                81.4780(10)
_cell_formula_units_Z            2
_cell_length_a                   7.51780(10)
_cell_length_b                   10.0669(2)
_cell_length_c                   14.6364(2)
_cell_measurement_reflns_used    5616
_cell_measurement_temperature    163
_cell_measurement_theta_max      25
_cell_measurement_theta_min      1
_cell_volume                     1042.46(3)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Siemens, 1995)'
_computing_data_reduction        'SAINT (Siemens, 1995)'
_computing_molecular_graphics
'PLATON (Spek, 1990) and XP in SHELXTL-Plus (Siemens, 1991)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      163
_diffrn_measured_fraction_theta_full .974
_diffrn_measured_fraction_theta_max .974
_diffrn_measurement_device       'Siemens CCD three-circle diffractometer'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  'highly oriented graphite crystal'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .022
_diffrn_reflns_av_sigmaI/netI    .020
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            15858
_diffrn_reflns_theta_full        26.45
_diffrn_reflns_theta_max         26.45
_diffrn_reflns_theta_min         2.12
_diffrn_standards_decay_%        .0
_diffrn_standards_interval_time  720
_diffrn_standards_number         260
_exptl_absorpt_coefficient_mu    .076
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.215
_exptl_crystal_description       block
_exptl_crystal_F_000             404
_exptl_crystal_size_max          .6
_exptl_crystal_size_mid          .4
_exptl_crystal_size_min          .2
_refine_diff_density_max         .27
_refine_diff_density_min         -.15
_refine_ls_extinction_coef       .017(2)
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     263
_refine_ls_number_reflns         4188
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          .044
_refine_ls_R_factor_gt           .036
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0462P)^2^+0.2564P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         .095
_reflns_number_gt                3545
_reflns_number_total             4188
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sk1471.cif
_cod_data_source_block           Ib
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               2012055
_cod_database_fobs_code          2012055