Exploring the structural landscape of 2-aminopyrazines via co-crystallizations
Aakeröy, Christer B.; Chopade, Prashant D.; Ganser, Claudia; Rajbanshi, Arbin; Desper, John; CrystEngComm 14 (2012) 5845–; doi:10.1039/c2ce25516b

data_7208524
_publ_section_title
;
 Exploring the structural landscape of 2-aminopyrazines via
 co-crystallizations
;
_journal_issue                   18
_journal_name_full               CrystEngComm
_journal_page_first              5845
_journal_paper_doi               10.1039/c2ce25516b
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety
;
(C4 H3 N3 Br2) (C7 H4 O2 F2)
;
_chemical_formula_sum            'C11 H7 Br2 F2 N3 O2'
_chemical_formula_weight         411.02
_chemical_name_systematic
;
ARcc-2c-7 2-amino-3,5-dibromopyrazine, 2,6-difluorobenzoic acid
;
_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                 93.911(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.6663(5)
_cell_length_b                   13.2299(11)
_cell_length_c                   17.3426(14)
_cell_measurement_reflns_used    9944
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      31.31
_cell_measurement_theta_min      2.35
_cell_volume                     1297.05(19)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0375
_diffrn_reflns_av_sigmaI/netI    0.0418
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            31619
_diffrn_reflns_theta_full        31.50
_diffrn_reflns_theta_max         31.50
_diffrn_reflns_theta_min         1.94
_exptl_absorpt_coefficient_mu    6.278
_exptl_absorpt_correction_T_max  0.4527
_exptl_absorpt_correction_T_min  0.3028
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.105
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.704
_refine_diff_density_min         -0.653
_refine_diff_density_rms         0.111
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     190
_refine_ls_number_reflns         4324
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0605
_refine_ls_R_factor_gt           0.0327
_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^)+(0.0350P)^2^+0.2000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0653
_refine_ls_wR_factor_ref         0.0721
_reflns_number_gt                3128
_reflns_number_total             4324
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce25516b.txt
_cod_data_source_block           B3.A18
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7208524