Combining piracetam and lithium salts: ionic co-crystals and co-drugs?
Dario Braga; Fabrizia Grepioni; Lucia Maini; Davide Capucci; Saverio Nanna; Johan Wouters; Luc Aerts; Luc Quere; Chem.Commun. 48 (2012) 8219–; doi:10.1039/c2cc33855f

data_7108159
_publ_section_title
;
 Combining piracetam and lithium salts: ionic co-crystals and co-drugs?
;
_journal_name_full               Chem.Commun.
_journal_page_first              8219
_journal_paper_doi               10.1039/c2cc33855f
_journal_volume                  48
_journal_year                    2012
_chemical_formula_sum            'C6 H14 Cl Li N2 O4'
_chemical_formula_weight         220.58
_chemical_name_systematic
;
?
;
_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                 91.596(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.5347(11)
_cell_length_b                   9.7992(12)
_cell_length_c                   14.732(3)
_cell_measurement_temperature    293(2)
_cell_volume                     1087.3(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_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  0.0370
_diffrn_reflns_av_sigmaI/netI    0.0763
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            4868
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         2.70
_exptl_absorpt_coefficient_mu    0.341
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.30075
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.348
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             464
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.247
_refine_diff_density_min         -0.299
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.958
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     133
_refine_ls_number_reflns         2353
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.958
_refine_ls_R_factor_all          0.1141
_refine_ls_R_factor_gt           0.0615
_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^)+(0.1030P)^2^+0.0533P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1541
_refine_ls_wR_factor_ref         0.1958
_reflns_number_gt                1403
_reflns_number_total             2353
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc33855f.txt
_cod_data_source_block           '[piracetam]LiCl_2H2O'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7108159