Combining API in a dual-drug ternary cocrystal approach.
Song, Lixing; Robeyns, Koen; Tumanov, Nikolay; Wouters, Johan; Leyssens, Tom; Chemical communications (Cambridge, England) 56 (2020) 13229–13232; doi:10.1039/d0cc05788f

data_7127358
_publ_section_title
;
 Combining API in a dual-drug ternary cocrystal approach.
;
_journal_issue                   86
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              13229
_journal_page_last               13232
_journal_paper_doi               10.1039/d0cc05788f
_journal_volume                  56
_journal_year                    2020
_chemical_formula_moiety         'C22 H36 Ca N6 O6, 2(Cl)'
_chemical_formula_sum            'C22 H36 Ca Cl2 N6 O6'
_chemical_formula_weight         591.55
_chemical_name_common            'CaCl2 etiracetam  Isonicotinamide'
_chemical_name_systematic
'CaCl2 (RS)-2-(2-Oxopyrrolidin-1-yl)butanamide pyridine-4-carboxamide'
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2020-08-24 deposited with the CCDC.	2020-10-01 downloaded from the CCDC.
;
_cell_angle_alpha                87.17(2)
_cell_angle_beta                 86.30(2)
_cell_angle_gamma                74.76(2)
_cell_formula_units_Z            2
_cell_length_a                   7.968(2)
_cell_length_b                   12.170(4)
_cell_length_c                   15.304(4)
_cell_measurement_reflns_used    784
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      20.8700
_cell_measurement_theta_min      3.1230
_cell_volume                     1428.1(7)
_computing_cell_refinement       'CrysAlisPro 1.171.40.16b (Rigaku OD, 2018)'
_computing_data_collection       MAR
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_computing_molecular_graphics    'MERCURY (Macrae et al., 2008)'
_computing_publication_material
;

'MERCURY (Macrae et al., 2008), Platon (Spek, 2009)'

;
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.958
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device_type  'MAR345 image plate'
_diffrn_measurement_method       '120 images, \D\F 1.5\% '
_diffrn_radiation_monochromator  'Xenocs Fox3D mirror'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_unetI/netI     0.1081
_diffrn_reflns_Laue_measured_fraction_full 0.958
_diffrn_reflns_Laue_measured_fraction_max 0.958
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            3208
_diffrn_reflns_point_group_measured_fraction_full 0.958
_diffrn_reflns_point_group_measured_fraction_max 0.958
_diffrn_reflns_theta_full        21.726
_diffrn_reflns_theta_max         21.726
_diffrn_reflns_theta_min         3.033
_diffrn_source                   'Rigaku UltraX 18 rotating anode'
_exptl_absorpt_coefficient_mu    0.453
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.98896
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.376
_exptl_crystal_description       rod
_exptl_crystal_F_000             624
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: methanol'
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.751
_refine_diff_density_min         -0.450
_refine_diff_density_rms         0.101
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.098
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     363
_refine_ls_number_reflns         3208
_refine_ls_number_restraints     50
_refine_ls_restrained_S_all      1.092
_refine_ls_R_factor_all          0.1544
_refine_ls_R_factor_gt           0.0989
_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^)+(0.0610P)^2^+11.5000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2139
_refine_ls_wR_factor_ref         0.2391
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2033
_reflns_number_total             3208
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0cc05788f2.cif
_cod_data_source_block           ls_20190819_CaETI
_cod_depositor_comments
'Adding full bibliography for 7127358--7127360.cif.'
_cod_original_cell_volume        1428.0(7)
_cod_database_code               7127358
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              28087