Conformational Polymorphs of a Muscle Relaxant, Metaxalone
Aitipamula, Srinivasulu; Chow, Pui Shan; Tan, Reginald B. H.; Crystal Growth & Design 11 (2011) 4101–; doi:10.1021/cg200678e

data_4501051
_publ_section_title
;
 Conformational Polymorphs of a Muscle Relaxant, Metaxalone
;
_journal_issue                   9
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              4101
_journal_paper_doi               10.1021/cg200678e
_journal_volume                  11
_journal_year                    2011
_chemical_formula_moiety         'C12 H15 N O3'
_chemical_formula_sum            'C12 H15 N O3'
_chemical_formula_weight         221.25
_chemical_name_common            Metaxalone
_chemical_name_systematic
;
 5-[(3,5-dimethylphenoxy)methyl]-1,3-oxazolidin-2-one
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                82.82(3)
_cell_angle_beta                 88.63(3)
_cell_angle_gamma                82.49(3)
_cell_formula_units_Z            4
_cell_length_a                   5.5559(11)
_cell_length_b                   10.321(2)
_cell_length_c                   19.819(4)
_cell_measurement_reflns_used    3093
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      31.0620
_cell_measurement_theta_min      2.0055
_cell_volume                     1117.9(4)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2007)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Rigaku Saturn 70 CCD area detector'
_diffrn_measurement_method       '\w scans'
_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  0.0251
_diffrn_reflns_av_sigmaI/netI    0.0269
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            15992
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.01
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.9897
_exptl_absorpt_correction_T_min  0.9595
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'R. H. Blessing, Acta Cryst. 1995 A51, 33-38'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.315
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             472
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.650
_refine_diff_density_min         -0.322
_refine_diff_density_rms         0.069
_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     301
_refine_ls_number_reflns         5500
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.098
_refine_ls_R_factor_all          0.0755
_refine_ls_R_factor_gt           0.0709
_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^)+(0.1103P)^2^+0.5587P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1939
_refine_ls_wR_factor_ref         0.1997
_reflns_number_gt                5062
_reflns_number_total             5500
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg200678e_si_003.cif
_cod_data_source_block           FormA
_cod_depositor_comments
;
The following automatic conversions were performed:

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

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' 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 
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_cod_database_code               4501051