Exploration and exploitation of homologous series of bis(acrylamido)alkanes containing pyridyl and phenyl groups: β-sheet versus two-dimensional layers in solid-state photochemical [2 + 2] reactions.
Garai, Mousumi; Biradha, Kumar; IUCrJ 2 (2015) 523–533; doi:10.1107/S2052252515009987

data_1556774
_publ_section_title
;
 Exploration and exploitation of homologous series of
 bis(acrylamido)alkanes containing pyridyl and phenyl groups: \b-sheet
 versus two-dimensional layers in solid-state photochemical
 [2&#x2005;+&#x2005;2] reactions.
;
_journal_issue                   'Pt 5'
_journal_name_full               IUCrJ
_journal_page_first              523
_journal_page_last               533
_journal_paper_doi               10.1107/S2052252515009987
_journal_volume                  2
_journal_year                    2015
_chemical_formula_moiety         'C16 H14 N4 O2'
_chemical_formula_sum            'C16 H14 N4 O2'
_chemical_formula_weight         294.31
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/n 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                 97.020(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   4.7315(10)
_cell_length_b                   9.213(2)
_cell_length_c                   16.390(4)
_cell_measurement_reflns_used    1426
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.36
_cell_measurement_theta_min      2.50
_cell_volume                     709.1(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Bruker CCD APEX-2'
_diffrn_measurement_method       hemisphere
_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  0.0448
_diffrn_reflns_av_sigmaI/netI    0.0328
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            8536
_diffrn_reflns_theta_full        26.36
_diffrn_reflns_theta_max         26.36
_diffrn_reflns_theta_min         2.50
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.990
_exptl_absorpt_correction_T_min  0.982
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.378
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             308
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.286
_refine_diff_density_min         -0.260
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     100
_refine_ls_number_reflns         1426
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.969
_refine_ls_R_factor_all          0.0536
_refine_ls_R_factor_gt           0.0401
_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^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1211
_refine_ls_wR_factor_ref         0.1319
_reflns_number_gt                1121
_reflns_number_total             1426
_reflns_threshold_expression     >2sigma(I)
_publcif_datablock.id            {7091ef25-4be5-43e8-9e59-30c3c56cf919}
_cod_data_source_file            yc5005.cif
_cod_data_source_block           2a
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/IUCr/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               1556774