Geometric H/D isotope effect in a series of organic salts involving short O–H⋯O hydrogen bonds between carboxyl and carboxylate groups
Jin, Tong; Zhang, Wen; CrystEngComm 21 (2019) 4238–; doi:10.1039/C9CE00734B

data_7232967
_publ_section_title
;
 Geometric H/D isotope effect in a series of organic salts involving short
 O--H&#x22EF;O hydrogen bonds between carboxyl and carboxylate groups
;
_journal_issue                   29
_journal_name_full               CrystEngComm
_journal_page_first              4238
_journal_paper_doi               10.1039/C9CE00734B
_journal_volume                  21
_journal_year                    2019
_chemical_formula_moiety         'C8 H F4 O4, C3 H5 N2'
_chemical_formula_sum            'C11 H6 F4 N2 O4'
_chemical_formula_weight         306.18
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2019-06-13 deposited with the CCDC.    2019-06-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.6878(5)
_cell_length_b                   7.2046(5)
_cell_length_c                   17.3573(9)
_cell_measurement_reflns_used    6714
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.637
_cell_measurement_theta_min      2.347
_cell_volume                     1211.48(12)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.907
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, AtlasS2'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0281
_diffrn_reflns_av_unetI/netI     0.0368
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.907
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            6714
_diffrn_reflns_point_group_measured_fraction_full 0.949
_diffrn_reflns_point_group_measured_fraction_max 0.812
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.637
_diffrn_reflns_theta_min         2.347
_exptl_absorpt_coefficient_mu    0.167
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.679
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             616.0
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.250
_refine_diff_density_min         -0.338
_refine_diff_density_rms         0.098
_refine_ls_abs_structure_details
;
 Flack x determined using 811 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.3(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     202
_refine_ls_number_reflns         2770
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0564
_refine_ls_R_factor_gt           0.0429
_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^)+(0.0486P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0901
_refine_ls_wR_factor_ref         0.0999
_reflns_Friedel_coverage         0.738
_reflns_Friedel_fraction_full    0.894
_reflns_Friedel_fraction_max     0.711
_reflns_number_gt                2259
_reflns_number_total             3408
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ce00734b2.cif
_cod_data_source_block           11-H
_cod_depositor_comments
'Adding full bibliography for 7232953--7232976.cif.'
_cod_database_code               7232967
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              10834