An investigation to elucidate the factors dictating the crystal structure of seven ammonium carboxylate molecular salts
Blignaut, Jacques; Lemmerer, Andreas; Acta Crystallographica Section E 74 (2018) 580–586; doi:10.1107/S2056989017017856

data_2242471
_publ_section_title
;
 An investigation to elucidate the factors dictating the crystal structure
 of seven ammonium carboxylate molecular salts
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              580
_journal_page_last               586
_journal_paper_doi               10.1107/S2056989017017856
_journal_volume                  74
_journal_year                    2018
_chemical_formula_iupac          'C8 H12 N +, C7 H3 Cl N O4 -'
_chemical_formula_moiety         'C8 H12 N +, C7 H3 Cl N O4 -'
_chemical_formula_sum            'C15 H15 Cl N2 O4'
_chemical_formula_weight         322.74
_chemical_name_common
'(RS)-alpha-methylbenzylammonium 2-chloro-4-nitro-benzoate'
_chemical_name_systematic
;
(<i>RS</i>)-1-Phenylethan-1-aminium 2-chloro-4-nitrobenzoate
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4.3
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 100.998(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   15.5817(7)
_cell_length_b                   6.3914(3)
_cell_length_c                   31.3238(14)
_cell_measurement_reflns_used    8180
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.27
_cell_measurement_theta_min      2.65
_cell_volume                     3062.2(2)
_computing_cell_refinement
;
SAINT-Plus (Bruker, 2016)
;
_computing_data_collection
;
APEX3 (Bruker, 2016)
;
_computing_data_reduction
;
SAINT-Plus (Bruker, 2016) and XPREP (Bruker, 2016)
;
_computing_molecular_graphics
;
ORTEP-3 for Windows (Farrugia, 2012) and DIAMOND (Brandenburg & Berndt,
1999)
;
_computing_publication_material
;
WinGX (Farrugia, 2012)
;
_computing_structure_refinement
;
SHELXL2017 (Sheldrick, 2015)
;
_computing_structure_solution
;
SHELXS97 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 1
_diffrn_measurement_device_type  'Bruker D8 Venture Photon CCD area detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0531
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       41
_diffrn_reflns_limit_l_min       -41
_diffrn_reflns_number            18885
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.998
_diffrn_reflns_theta_min         2.65
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.269
_exptl_absorpt_correction_T_max  0.9793
_exptl_absorpt_correction_T_min  0.9034
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
(XPREP; Bruker, 2016)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.4
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1344
_exptl_crystal_size_max          0.467
_exptl_crystal_size_mid          0.352
_exptl_crystal_size_min          0.082
_refine_diff_density_max         0.284
_refine_diff_density_min         -0.315
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.04
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     212
_refine_ls_number_reflns         3709
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.04
_refine_ls_R_factor_all          0.0403
_refine_ls_R_factor_gt           0.0345
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0460P)^2^+1.4672P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.088
_refine_ls_wR_factor_ref         0.0911
_reflns_number_gt                3218
_reflns_number_total             3709
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            xi2001sup1.cif
_cod_data_source_block           III
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2242471
_cod_database_fobs_code          2242471
_shelx_estimated_absorpt_t_min   0.885
_shelx_estimated_absorpt_t_max   0.978
_shelx_hkl_checksum              76851
_shelx_res_checksum              46480