Surprisingly complex supramolecular behaviour in the crystal structures of a family of mono-substituted salicylic acids
Montis, Riccardo; Hursthouse, Michael B.; CrystEngComm 14 (2012) 5242–; doi:10.1039/c2ce25336d

data_7208259
_publ_section_title
;
 Surprisingly complex supramolecular behaviour in the crystal structures
 of a family of mono-substituted salicylic acids
;
_journal_issue                   16
_journal_name_full               CrystEngComm
_journal_page_first              5242
_journal_paper_doi               10.1039/c2ce25336d
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C8 H8 O4'
_chemical_formula_sum            'C8 H8 O4'
_chemical_formula_weight         168.14
_chemical_name_common            '4-methoxy-2-hydroxobenzoic acid'
_chemical_name_systematic        '4-methoxy-2-hydroxobenzoic acid'
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 98.788(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.9629(2)
_cell_length_b                   11.0915(8)
_cell_length_c                   13.6559(9)
_cell_measurement_reflns_used    22874
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     742.88(8)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean '4096x4096pixels / 62x62mm'
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type
'Bruker-Nonius APEX II CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0532
_diffrn_reflns_av_sigmaI/netI    0.0403
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            10375
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    0.122
_exptl_absorpt_correction_T_max  0.9855
_exptl_absorpt_correction_T_min  0.9562
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2007/2 (Sheldrick, G.M., 2007)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.503
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             352
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.293
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.098
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     126
_refine_ls_number_reflns         1704
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.098
_refine_ls_R_factor_all          0.0640
_refine_ls_R_factor_gt           0.0481
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0655P)^2^+0.1762P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1178
_refine_ls_wR_factor_ref         0.1274
_reflns_number_gt                1346
_reflns_number_total             1704
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c2ce25336d.txt
_cod_data_source_block           4-methoxysalicylic_acid
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7208259