Microcrystalline solid–solid transformations of conformationally-responsive solvates, desolvates and a salt of N,N′-(1,4-phenylene)dioxalamic acid: the energetics of hydrogen bonding and n/π → π* interactions
Morales-Santana, Marcos; Chong-Canto, Sayuri; Santiago-Quintana, José Martín; Martínez-Martínez, Francisco J.; García-Báez, Efrén V.; Cruz, Alejandro; Rojas-Lima, Susana; Padilla-Martínez, Itzia I.; CrystEngComm 24 (2022) 1017–1034; doi:10.1039/D1CE01504D

data_7244186
_publ_section_title
;
 Microcrystalline solid--solid transformations of
 conformationally-responsive solvates, desolvates and a salt of
 N,N&#x2032;-(1,4-phenylene)dioxalamic acid: the energetics of hydrogen
 bonding and n/\p \\rightarrow \p* interactions
;
_journal_issue                   5
_journal_name_full               CrystEngComm
_journal_page_first              1017
_journal_page_last               1034
_journal_paper_doi               10.1039/D1CE01504D
_journal_volume                  24
_journal_year                    2022
_chemical_formula_sum            'C14 H22 N4 O6'
_chemical_formula_weight         342.35
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2021-03-10 deposited with the CCDC.	2021-12-10 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 98.336(4)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.9712(3)
_cell_length_b                   7.0040(3)
_cell_length_c                   20.4618(9)
_cell_measurement_reflns_used    600
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      20
_cell_volume                     846.72(7)
_computing_cell_refinement       'CrysAlis CCD (Oxford Diffraction, 2009)'
_computing_data_collection       'CrysAlis CCD (Oxford Diffraction, 2009)'
_computing_data_reduction        'CrysAlis RED (Oxford Diffraction, 2009)'
_computing_molecular_graphics    'Mercury 4.0 (Macrae <i>et al</i>., 2020)'
_computing_publication_material
'WINGX-2018.3 (Farrugia, 2012)/Platon (Spek, 2003)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device_type  'Oxford Xcalibur Ruby Gemini'
_diffrn_measurement_method       \w
_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  0.0260
_diffrn_reflns_av_unetI/netI     0.0118
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.973
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            29486
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.973
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.670
_diffrn_reflns_theta_min         3.078
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.106
_exptl_absorpt_correction_T_max  0.8645
_exptl_absorpt_correction_T_min  0.8614
_exptl_absorpt_correction_type   sphere
_exptl_absorpt_process_details
;
Interpolation using  Int.Tab. Vol. C (1992) p. 523,Tab. 6.3.3.3
for values of muR in the range 0-2.5, and Int.Tab. Vol.II (1959)
p.302; Table 5.3.6 B for muR in the range 2.6-10.0.
The interpolation procedure of C.W.Dwiggins Jr (Acta Cryst.(1975)
A31,146-148) is used with some modification.
;
_exptl_crystal_colour            pinkless
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_description       prism
_exptl_crystal_F_000             364
_exptl_crystal_size_max          0.550
_exptl_crystal_size_mid          0.450
_exptl_crystal_size_min          0.350
_exptl_crystal_size_rad          0.1500
_refine_diff_density_max         0.312
_refine_diff_density_min         -0.160
_refine_diff_density_rms         0.036
_refine_ls_extinction_coef       0.044(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     124
_refine_ls_number_reflns         2340
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0441
_refine_ls_R_factor_gt           0.0366
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0447P)^2^+0.1955P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0945
_refine_ls_wR_factor_ref         0.1001
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2016
_reflns_number_total             2340
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1ce01504d2.cif
_cod_data_source_block           shelx_CCDC3
_cod_depositor_comments
'Adding full bibliography for 7244183--7244186.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7244186
_shelx_shelxl_version_number     2018/3
_exptl_absorpt_correction_t_ave  0.8632
_shelx_res_checksum              733
_shelx_hkl_checksum              55758