Structural elaboration of dicyanopyrazine: towards push‒pull molecules with tailored photoredox activity
Hloušková, Zuzana; Klikar, Milan; Pytela, Oldřich; Almonasy, Numan; Růžička, Aleš; Jandová, Veronika; Bureš, Filip; RSC Advances 9 (2019) 23797–; doi:10.1039/C9RA04731J

data_7233292
_publ_section_title
;
 Structural elaboration of dicyanopyrazine: towards push--pull molecules
 with tailored photoredox activity
;
_journal_issue                   41
_journal_name_full               'RSC Advances'
_journal_page_first              23797
_journal_paper_doi               10.1039/C9RA04731J
_journal_volume                  9
_journal_year                    2019
_chemical_formula_sum            'C11 H6 N6'
_chemical_formula_weight         222.22
_space_group_crystal_system      monoclinic
_space_group_IT_number           11
_space_group_name_Hall           '-P 2yb'
_space_group_name_H-M_alt        'P 1 21/m 1'
_symmetry_space_group_name_Hall  '-P 2yb'
_symmetry_space_group_name_H-M   'P 1 21/m 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2019-02-16 deposited with the CCDC.    2019-07-15 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 97.855(4)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   3.7497(5)
_cell_length_b                   14.1534(17)
_cell_length_c                   10.3386(13)
_cell_measurement_reflns_used    6571
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      1
_cell_volume                     543.53(12)
_computing_cell_refinement       'APEX3 v2016.5-0 (Bruker AXS)'
_computing_data_collection       'Bruker Instrument Service vV6.2.3'
_computing_data_reduction        'SAINT V8.37A (Bruker AXS Inc., 2015)'
_computing_molecular_graphics    'Platon (Spek, 2009)'
_computing_publication_material  'Platon (Spek, 2009)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'XT, VERSION 2014/5'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 10.4167
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker D8 - Venture'
_diffrn_measurement_method       '\f and \w scans to fill the Ewald sphere'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0430
_diffrn_reflns_av_unetI/netI     0.0304
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            6571
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.524
_diffrn_reflns_theta_min         2.455
_diffrn_source                   'sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6744
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.358
_exptl_crystal_description       plate
_exptl_crystal_F_000             228
_exptl_crystal_size_max          0.208
_exptl_crystal_size_mid          0.155
_exptl_crystal_size_min          0.081
_refine_diff_density_max         0.201
_refine_diff_density_min         -0.435
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.197
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     85
_refine_ls_number_reflns         1287
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.197
_refine_ls_R_factor_all          0.0841
_refine_ls_R_factor_gt           0.0644
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0449P)^2^+0.4732P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1462
_refine_ls_wR_factor_ref         0.1530
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1009
_reflns_number_total             1287
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ra04731j2.cif
_cod_data_source_block           19
_cod_database_code               7233292
_shelx_shelxl_version_number     2014/7
_exptl_absorpt_special_details
;
SADABS-2016/2 - Bruker AXS area detector
scaling and absorption correction.
The ratio of minimum to maximum
apparent transmission was 0.905
;
_shelx_res_checksum              68716