The low-temperature phase transition of 9-methylfluoren-9-ol: comparison of the crystal structures at 100 and 200K
Morris, David G.; Muir, Kenneth W.; Ryder, Karl S.; Acta Crystallographica Section C 58 (2002) o615–o618; doi:10.1107/S0108270102015822

data_2012992
_publ_section_title
;
 The low-temperature phase transition of 9-methylfluoren-9-ol:
 comparison of the crystal structures at 100 and 200K
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o615
_journal_page_last               o618
_journal_paper_doi               10.1107/S0108270102015822
_journal_volume                  58
_journal_year                    2002
_chemical_formula_moiety         'C14 H12 O1'
_chemical_formula_sum            'C14 H12 O'
_chemical_formula_weight         196.24
_chemical_name_systematic
;
9-methylfluoren-9-ol
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_cell_angle_alpha                90.952(2)
_cell_angle_beta                 103.4620(10)
_cell_angle_gamma                106.2250(10)
_cell_formula_units_Z            4
_cell_length_a                   8.7380(2)
_cell_length_b                   11.4571(3)
_cell_length_c                   11.7097(4)
_cell_measurement_reflns_used    5786
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      30.0
_cell_measurement_theta_min      1.0
_cell_volume                     1090.47(5)
_computing_cell_refinement       'HKL SCALEPACK (Otwinowski & Minor 1997)'
_computing_data_collection       'COLLECT (Nonius, 2000)'
_computing_data_reduction
'HKL DENZO (Otwinowski & Minor 1997) and WinGX (Farrugia, 1999)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'PLATON (Spek, 1990, 1998) and WinGX'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Nonius KappaCCD area-detector'
_diffrn_measurement_method       '\w scans, thick slices'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.021
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            11636
_diffrn_reflns_theta_full        30.1
_diffrn_reflns_theta_max         30.1
_diffrn_reflns_theta_min         1.8
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.195
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             416
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.49
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.35
_refine_diff_density_min         -0.21
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     281
_refine_ls_number_reflns         6338
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_gt           0.058
_refine_ls_shift/su_max          0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.07P)^2^+0.25P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.156
_reflns_number_gt                4662
_reflns_number_total             6338
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jz1524.cif
_cod_data_source_block           II
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_formula_sum        'C14 H12 O1'
_cod_database_code               2012992