Benzyl 2,3,4,6-tetramethylbenzoate
A. G. Pinkus; Klausmeyer, Kevin K.; Feazell, Rodney P.; Ellen C. H. Y. Lin; Acta Crystallographica Section E 62 (2006) o523–o524; doi:10.1107/S1600536806000535

data_2207975
_publ_section_title
;
 Benzyl 2,3,4,6-tetramethylbenzoate
;
_journal_coeditor_code           BT6797
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o523
_journal_page_last               o524
_journal_paper_doi               10.1107/S1600536806000535
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C18 H20 O2'
_chemical_formula_moiety         'C18 H20 O2'
_chemical_formula_sum            'C18 H20 O2'
_chemical_formula_weight         268.34
_chemical_name_systematic
;
Benzyl 2,3,4,6-tetramethylbenzoate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 97.815(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.4921(19)
_cell_length_b                   5.5915(8)
_cell_length_c                   17.1846(19)
_cell_measurement_reflns_used    4540
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      28.34
_cell_measurement_theta_min      2.66
_cell_volume                     1474.8(3)
_computing_cell_refinement       APEX2
_computing_data_collection       'APEX2 (Bruker, 2003)'
_computing_data_reduction        'SAINT-Plus (Bruker, 2003)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2000)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker SMART 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  0.0261
_diffrn_reflns_av_sigmaI/netI    0.0281
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            11515
_diffrn_reflns_theta_full        28.32
_diffrn_reflns_theta_max         28.32
_diffrn_reflns_theta_min         2.39
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_T_max  0.993
_exptl_absorpt_correction_T_min  0.984
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.209
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             576
_exptl_crystal_size_max          0.129
_exptl_crystal_size_mid          0.116
_exptl_crystal_size_min          0.108
_refine_diff_density_max         0.316
_refine_diff_density_min         -0.207
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     185
_refine_ls_number_reflns         3631
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0544
_refine_ls_R_factor_gt           0.0442
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0578P)^2^+0.5741P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1127
_refine_ls_wR_factor_ref         0.1226
_reflns_number_gt                3026
_reflns_number_total             3631
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bt6797.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      'P 21/n'
_cod_database_code               2207975
_cod_database_fobs_code          2207975