Famciclovir–fumaric acid: an all-in-one multicomponent system with salt, cocrystal and salt–cocrystal continuum
Kotte, Lohith; Pendota, Vinusha; Sreedhar, Bojja; Nanubolu, Jagadeesh Babu; CrystEngComm 25 (2023) 2662–2678; doi:10.1039/D3CE00200D

data_7246646
_publ_section_title
;
 Famciclovir--fumaric acid: an all-in-one multicomponent system with salt,
 cocrystal and salt--cocrystal continuum
;
_journal_issue                   17
_journal_name_full               CrystEngComm
_journal_page_first              2662
_journal_page_last               2678
_journal_paper_doi               10.1039/D3CE00200D
_journal_volume                  25
_journal_year                    2023
_chemical_formula_moiety         'C14 H20 N5 O4, 0.5(C4 H2 O4)'
_chemical_formula_sum            'C16 H21 N5 O6'
_chemical_formula_weight         379.38
_chemical_name_systematic        'Famciclovir-fumaric acid (1:0.5)'
_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
;
2023-02-27 deposited with the CCDC.	2023-04-04 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 107.15(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.107(8)
_cell_length_b                   7.457(5)
_cell_length_c                   17.652(12)
_cell_measurement_reflns_used    9955
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.507
_cell_measurement_theta_min      2.413
_cell_volume                     1774(2)
_computing_cell_refinement       '<i>SAINT</i> (Bruker, 2016)'
_computing_data_collection       '<i>APEX3</i> (Bruker, 2016)'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker D8 QUEST PHOTON-100'
_diffrn_measurement_method       '\w and \f'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0319
_diffrn_reflns_av_unetI/netI     0.0289
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            25784
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.998
_diffrn_reflns_theta_min         2.195
_diffrn_source                   microfocus
_exptl_absorpt_coefficient_mu    0.110
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6997
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2014/5'
_exptl_crystal_density_diffrn    1.420
_exptl_crystal_description       needle
_exptl_crystal_F_000             800
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: Ethanol'
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.080
_refine_diff_density_max         0.452
_refine_diff_density_min         -0.343
_refine_diff_density_rms         0.060
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     259
_refine_ls_number_reflns         5172
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0496
_refine_ls_R_factor_gt           0.0400
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0495P)^2^+0.8836P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0990
_refine_ls_wR_factor_ref         0.1053
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4395
_reflns_number_total             5172
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3ce00200d2.cif
_cod_data_source_block           KA282_0m-auto
_cod_depositor_comments
'Adding full bibliography for 7246646--7246653.cif.'
_cod_original_cell_volume        1774.4(19)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7246646
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.968
_shelx_estimated_absorpt_t_max   0.991
_shelx_res_checksum              2397
_shelx_hkl_checksum              63218