Ionic Co-crystals of Organic Molecules with Metal Halides: A New Prospect in the Solid Formulation of Active Pharmaceutical Ingredients
Braga, Dario; Grepioni, Fabrizia; Lampronti, Giulio I.; Maini, Lucia; Turrina, Alessandro; Crystal Growth & Design 11 (2011) 5621–; doi:10.1021/cg201177p

data_4501374
_publ_section_title
;
 Ionic Co-crystals of Organic Molecules with Metal Halides: A New Prospect
 in the Solid Formulation of Active Pharmaceutical Ingredients
;
_journal_issue                   12
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              5621
_journal_paper_doi               10.1021/cg201177p
_journal_volume                  11
_journal_year                    2011
_chemical_formula_sum            'C12 H16 Ca Cl2 N4 O4'
_chemical_formula_weight         391.02
_chemical_name_systematic
;
nicotinamide2 CaCl2 (H2O)2
;
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2011-07-19T12:27:53-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 117.775(7)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   21.7401(12)
_cell_length_b                   6.8716(3)
_cell_length_c                   12.8167(7)
_cell_measurement_temperature    293(2)
_cell_volume                     1694.08(19)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.84
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0262
_diffrn_reflns_av_unetI/netI     0.0471
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            3759
_diffrn_reflns_theta_full        25
_diffrn_reflns_theta_max         29.21
_diffrn_reflns_theta_min         3.15
_exptl_absorpt_coefficient_mu    0.709
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.97370
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.534
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.05
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.323
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.064
_refine_ls_extinction_coef       0.0053(5)
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.092
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     122
_refine_ls_number_reflns         1935
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.092
_refine_ls_R_factor_all          0.0504
_refine_ls_R_factor_gt           0.0384
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0318P)^2^+0.0620P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.088
_reflns_number_gt                1568
_reflns_number_total             1935
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            cg201177p_si_001.cif
_cod_data_source_block           nicotinamide2CaCl2(H2O)2
_cod_original_cell_volume        1694.08(15)
_cod_original_formula_sum        'C12 H16 Ca1 Cl2 N4 O4'
_cod_database_code               4501374