A second monoclinic polymorph of methyl 4-hydroxybenzoate
Fun, Hoong-Kun; Jebas, Samuel Robinson; Acta Crystallographica Section E 64 (2008) o1255–; doi:10.1107/S1600536808017327

data_2218645
_publ_section_title
;
 A second monoclinic polymorph of methyl 4-hydroxybenzoate
;
_journal_coeditor_code           CI2607
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1255
_journal_paper_doi               10.1107/S1600536808017327
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C8 H8 O3'
_chemical_formula_moiety         'C8 H8 O3'
_chemical_formula_sum            'C8 H8 O3'
_chemical_formula_weight         152.14
_chemical_name_common            'Methyl 4-hydroxybenzoate'
_chemical_name_systematic
;
methyl 4-hydroxybenzoate
;
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 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                 119.2600(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            12
_cell_length_a                   12.9708(4)
_cell_length_b                   17.2485(7)
_cell_length_c                   10.8428(3)
_cell_measurement_reflns_used    6163
_cell_measurement_temperature    100.00(10)
_cell_measurement_theta_max      28.77
_cell_measurement_theta_min      2.31
_cell_volume                     2116.32(12)
_computing_cell_refinement       'APEX2 (Bruker, 2005)'
_computing_data_collection       'APEX2 (Bruker, 2005)'
_computing_data_reduction        'SAINT (Bruker, 2005)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material
;
SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2003)
;
_computing_structure_refinement  'SHELXTL (Sheldrick, 2008)'
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.00(10)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEXII CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0474
_diffrn_reflns_av_sigmaI/netI    0.0303
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            25224
_diffrn_reflns_theta_full        30.60
_diffrn_reflns_theta_max         30.60
_diffrn_reflns_theta_min         2.15
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.110
_exptl_absorpt_correction_T_max  0.9794
_exptl_absorpt_correction_T_min  0.9687
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2005)'
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.433
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             960
_exptl_crystal_size_max          0.29
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.402
_refine_diff_density_min         -0.237
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     301
_refine_ls_number_reflns         3278
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0542
_refine_ls_R_factor_gt           0.0425
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         <0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0693P)^2^+0.2705P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1098
_refine_ls_wR_factor_ref         0.1163
_reflns_number_gt                2705
_reflns_number_total             3278
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ci2607.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'C c'
_cod_database_code               2218645
_cod_database_fobs_code          2218645