Acid···Amide Supramolecular Synthon in Cocrystals: From Spectroscopic Detection to Property Engineering.
Saha, Subhankar; Desiraju, Gautam R.; Journal of the American Chemical Society 140 (2018) 6361–6373; doi:10.1021/jacs.8b02435

data_4132212
_publ_section_title
;
 Acid&#x00B7;&#x00B7;&#x00B7;Amide Supramolecular Synthon in Cocrystals:
 From Spectroscopic Detection to Property Engineering.
;
_journal_issue                   20
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6361
_journal_page_last               6373
_journal_paper_doi               10.1021/jacs.8b02435
_journal_volume                  140
_journal_year                    2018
_chemical_formula_sum            'C15 H14 N2 O6'
_chemical_formula_weight         318.28
_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   geom
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                80.47(2)
_cell_angle_beta                 86.02(3)
_cell_angle_gamma                78.432(18)
_cell_formula_units_Z            4
_cell_length_a                   7.806(7)
_cell_length_b                   10.767(9)
_cell_length_c                   17.948(15)
_cell_measurement_reflns_used    3164
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      33.6
_cell_measurement_theta_min      2.0
_cell_volume                     1456(2)
_computing_cell_refinement
;
CrystalClear-SM Expert 2.0 rc14 (Rigaku, 2009)
;
_computing_data_collection
;
CrystalClear-SM Expert 2.0 rc14 (Rigaku, 2009)
;
_computing_data_reduction
;
CrystalClear-SM Expert 2.0 rc14 (Rigaku, 2009)
;
_computing_structure_refinement  'SHELXL-14 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXL-14 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_detector_area_resol_mean 13.6612
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device
;
XtaLABmini: Fixed Chi 2 circle
;
_diffrn_measurement_device_type
;
Rigaku Mercury375R (2x2 bin mode)
;
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1787
_diffrn_reflns_av_unetI/netI     0.1426
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            13805
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.992
_diffrn_reflns_theta_min         1.151
_exptl_absorpt_coefficient_mu    0.114
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.731
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.452
_exptl_crystal_description       Block
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.110
_refine_diff_density_max         0.415
_refine_diff_density_min         -0.411
_refine_diff_density_rms         0.092
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.115
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     419
_refine_ls_number_reflns         5710
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.115
_refine_ls_R_factor_all          0.1146
_refine_ls_R_factor_gt           0.0830
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0967P)^2^+0.0078P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2086
_refine_ls_wR_factor_ref         0.2511
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3914
_reflns_number_total             5710
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b02435_si_004.cif
_cod_data_source_block           2A
_cod_database_code               4132212
_shelx_estimated_absorpt_t_min   0.980
_shelx_estimated_absorpt_t_max   0.988
_shelxl_version_number           2014-3
_shelx_res_checksum              71368
_shelx_hkl_checksum              47283