Synthesis, structural and conformational properties, and gas phase reactivity of 1,4-dihydropyridine ester and ketone derivatives.
Giorgi, Gianluca; Adamo, Mauro F. A.; Ponticelli, Fabio; Ventura, Antonio; Organic & biomolecular chemistry 8 (2010) 5339–5344; doi:10.1039/c0ob00494d

data_7153506
_publ_section_title
;
 Synthesis, structural and conformational properties, and gas phase
 reactivity of 1,4-dihydropyridine ester and ketone derivatives.
;
_journal_issue                   23
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5339
_journal_page_last               5344
_journal_paper_doi               10.1039/c0ob00494d
_journal_volume                  8
_journal_year                    2010
_chemical_formula_moiety         'C29 H27 N O4'
_chemical_formula_sum            'C29 H27 N O4'
_chemical_formula_weight         453.52
_chemical_name_common
;
4-(3,4-dimethoxyphenyl)-2,6-dimethyl-1,4-dihydropyridine--3,5-
diyl)bis(phenyl-methanone
;
_chemical_name_systematic
;
4-(3,4-dimethoxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-
-3,5-diyl)bis(phenyl-methanone
;
_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                 103.530(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.098(3)
_cell_length_b                   7.516(2)
_cell_length_c                   17.030(2)
_cell_measurement_reflns_used    54
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.133
_cell_measurement_theta_min      9.789
_cell_volume                     2376.7(8)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker P4'
_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  0.0269
_diffrn_reflns_av_sigmaI/netI    0.0575
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       1
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -1
_diffrn_reflns_number            5376
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.19
_diffrn_standards_decay_%        2.26
_diffrn_standards_interval_count 100
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.267
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             960
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.173
_refine_diff_density_min         -0.157
_refine_diff_density_rms         0.038
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     315
_refine_ls_number_reflns         4172
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.1070
_refine_ls_R_factor_gt           0.0549
_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^)+(0.0424P)^2^+0.7563P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1058
_refine_ls_wR_factor_ref         0.1262
_reflns_number_gt                2525
_reflns_number_total             4172
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c0ob00494d.txt
_cod_data_source_block           ant5inv
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7153506