Can picolinamide be a promising cocrystal former?
Chan, H. C. Stephen; Woollam, Grahame R.; Wagner, Trixie; Schmidt, Martin U.; Lewis, Richard A.; CrystEngComm 16 (2014) 4365–; doi:10.1039/c4ce00265b

data_7214358
_publ_section_title
;
 Can picolinamide be a promising cocrystal former?
;
_journal_issue                   21
_journal_name_full               CrystEngComm
_journal_page_first              4365
_journal_paper_doi               10.1039/c4ce00265b
_journal_volume                  16
_journal_year                    2014
_chemical_formula_sum            'C16 H18 N4 O6'
_chemical_formula_weight         362.34
_chemical_name_common            '2:1 pico:succ'
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_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_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 105.811(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   32.561(10)
_cell_length_b                   5.078(2)
_cell_length_c                   20.831(6)
_cell_measurement_reflns_used    7099
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      67.98
_cell_measurement_theta_min      4.54
_cell_volume                     3314.0(19)
_computing_cell_refinement       'Saint V7.36A (Bruker AXS, 2006)'
_computing_data_collection       'SMART V5.632 (Bruker AXS, 2003)'
_computing_data_reduction        'Saint V7.36A (Bruker AXS, 2006)'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'three-circle goniometer'
_diffrn_measurement_method       \w-scans
_diffrn_radiation_monochromator  'multilayer mirrors'
_diffrn_radiation_source         'microfocus rotating anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0378
_diffrn_reflns_av_sigmaI/netI    0.0297
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       -37
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            16646
_diffrn_reflns_theta_full        66.53
_diffrn_reflns_theta_max         66.53
_diffrn_reflns_theta_min         2.82
_exptl_absorpt_coefficient_mu    0.957
_exptl_absorpt_correction_T_max  0.9718
_exptl_absorpt_correction_T_min  0.8938
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2010)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.452
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1520
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.327
_refine_diff_density_min         -0.440
_refine_diff_density_rms         0.121
_refine_ls_extinction_coef       0.0050(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.920
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     238
_refine_ls_number_reflns         2896
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.920
_refine_ls_R_factor_all          0.0471
_refine_ls_R_factor_gt           0.0422
_refine_ls_shift/su_max          0.016
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0642P)^2^+3.9088P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0960
_refine_ls_wR_factor_ref         0.1006
_reflns_number_gt                2566
_reflns_number_total             2896
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ce00265b2.cif
_cod_data_source_block           STC22a
_cod_depositor_comments
'Adding full bibliography for 7214357--7214365.cif.'
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7214358
_chemical_source_common          EtOH