An exploration into the amide–pseudo amide hydrogen bonding synthon between a new coformer with two primary amide groups and theophylline
Markad, Datta; Mandal, Sanjay K.; CrystEngComm  (2017) –; doi:10.1039/C7CE01666B

data_7229597
_publ_section_title
;
 An exploration into the amide--pseudo amide hydrogen bonding synthon
 between a new coformer with two primary amide groups and theophylline
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/C7CE01666B
_journal_year                    2017
_chemical_formula_moiety         'C24 H28 N6 O2, 4(C7 H8 N4 O2)'
_chemical_formula_sum            'C52 H60 N22 O10'
_chemical_formula_weight         1153.22
_chemical_melting_point          507
_chemical_name_common            '[(2bpxg.4THP)n]'
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_audit_update_record
;
2017-09-03 deposited with the CCDC.
2017-11-06 downloaded from the CCDC.
;
_cell_angle_alpha                96.84(2)
_cell_angle_beta                 93.49(2)
_cell_angle_gamma                94.57(2)
_cell_formula_units_Z            1
_cell_length_a                   9.536(16)
_cell_length_b                   11.74(2)
_cell_length_c                   12.81(2)
_cell_measurement_reflns_used    1199
_cell_measurement_temperature    296.(2)
_cell_measurement_theta_max      24.5942
_cell_measurement_theta_min      2.5586
_cell_volume                     1416(4)
_computing_cell_refinement       'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_data_reduction        'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT 2014/4 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_device_type  'Bruker Kappa APEX II'
_diffrn_measurement_method       'phi and omega scan'
_diffrn_radiation_monochromator  Graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0487
_diffrn_reflns_av_unetI/netI     0.0502
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            15263
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.61
_diffrn_source                   'Sealed tube'
_diffrn_source_type              'Fine Focus'
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_T_max  0.7455
_exptl_absorpt_correction_T_min  0.6037
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2012/1 (Bruker AXS Inc.)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.352
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             606
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.240
_refine_diff_density_min         -0.239
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.089
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     383
_refine_ls_number_reflns         4851
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.089
_refine_ls_R_factor_all          0.0941
_refine_ls_R_factor_gt           0.0558
_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^)+(0.1000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1535
_refine_ls_wR_factor_ref         0.1861
_reflns_number_gt                2814
_reflns_number_total             4851
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ce01666b2.cif
_cod_data_source_block           I_CCDC1
_cod_original_cell_volume        1416.(4)
_cod_database_code               7229597
_shelx_res_checksum              89031