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_7246652
_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 H19 N5 O4, C4 H4 O4'
_chemical_formula_sum            'C18 H23 N5 O8'
_chemical_formula_weight         437.41
_chemical_name_systematic        'Famciclovir-fumaric acid (2:2) Form I'
_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   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                67.808(5)
_cell_angle_beta                 86.239(4)
_cell_angle_gamma                68.249(5)
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_cell_length_b                   13.954(3)
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_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.245
_cell_measurement_theta_min      2.204
_cell_volume                     2070.1(8)
_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 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_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  0.0396
_diffrn_reflns_av_unetI/netI     0.0310
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            51311
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.999
_diffrn_reflns_theta_min         2.206
_diffrn_source                   microfocus
_exptl_absorpt_coefficient_mu    0.112
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6733
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 SADABS 2016/2: Krause, L., Herbst-Irmer, R., Sheldrick G.M. & Stalke D.,
 J. Appl. Cryst. 48 (2015) 3-10
;
_exptl_crystal_density_diffrn    1.403
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             920
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_exptl_crystal_size_min          0.270
_refine_diff_density_max         0.363
_refine_diff_density_min         -0.215
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     762
_refine_ls_number_reflns         8118
_refine_ls_number_restraints     610
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0876
_refine_ls_R_factor_gt           0.0526
_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^)+(0.0762P)^2^+0.9258P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1359
_refine_ls_wR_factor_ref         0.1669
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5206
_reflns_number_total             8118
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3ce00200d2.cif
_cod_data_source_block           KB646_0m
_cod_depositor_comments
'Adding full bibliography for 7246646--7246653.cif.'
_cod_original_cell_volume        2070.2(8)
_cod_database_code               7246652
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.952
_shelx_estimated_absorpt_t_max   0.970
_shelx_res_checksum              4382
_shelx_hkl_checksum              25562