New solvates of an old drug compound (phenobarbital): structure and stability.
Zencirci, Neslihan; Griesser, Ulrich J.; Gelbrich, Thomas; Kahlenberg, Volker; Jetti, Ram K. R.; Apperley, David C.; Harris, Robin K.; The journal of physical chemistry. B 118 (2014) 3267–3280; doi:10.1021/jp409201v

data_1514127
_publ_section_title
;
 New solvates of an old drug compound (phenobarbital): structure and
 stability.
;
_journal_issue                   12
_journal_name_full               'The journal of physical chemistry. B'
_journal_page_first              3267
_journal_page_last               3280
_journal_paper_doi               10.1021/jp409201v
_journal_volume                  118
_journal_year                    2014
_chemical_formula_moiety         'C12 H12 N2 O3, C2 H3 N'
_chemical_formula_sum            'C14 H15 N3 O3'
_chemical_formula_weight         273.29
_chemical_name_common            'phenobarbital acetonitrile monosolvate'
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                99.674(8)
_cell_angle_beta                 96.774(6)
_cell_angle_gamma                97.811(7)
_cell_formula_units_Z            4
_cell_length_a                   10.1600(7)
_cell_length_b                   10.3036(11)
_cell_length_c                   14.0553(12)
_cell_measurement_reflns_used    4749
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.4627
_cell_measurement_theta_min      2.986
_cell_volume                     1422.0(2)
_computing_cell_refinement
;
CrysAlisPro (Agilent, 2011)
;
_computing_data_collection
;

CrysAlisPro (Agilent, 2011)
;
_computing_data_reduction
;
CrysAlisPro (Agilent, 2011)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Xcalibur, Ruby, Gemini ultra'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0344
_diffrn_reflns_av_sigmaI/netI    0.0487
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            9567
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         2.99
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.277
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.564
_refine_diff_density_min         -0.317
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     400
_refine_ls_number_reflns         4994
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0696
_refine_ls_R_factor_gt           0.0492
_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^)+(0.0773P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1253
_refine_ls_wR_factor_ref         0.1319
_reflns_number_gt                3638
_reflns_number_total             4994
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp409201v_si_002.cif
_cod_data_source_block           Pbtl_Acn_monosolvate_11thg013
_cod_original_sg_symbol_Hall     '-P 1 '
_cod_database_code               1514127