2-Methylxanthen-9-one
Vinutha, N.; Anthal, Sumati; Ranganatha, V. Lakshmi; Khanum, Shaukath Ara; Revannasiddaiah, D.; Kant, Rajni; Gupta, Vivek K.; Acta Crystallographica Section E 68 (2012) o872–; doi:10.1107/S1600536812007702

data_2233773
_publ_section_title
;
 2-Methylxanthen-9-one
;
_journal_coeditor_code           CV5249
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o872
_journal_paper_doi               10.1107/S1600536812007702
_journal_volume                  68
_journal_year                    2012
_chemical_formula_iupac          'C14 H10 O2'
_chemical_formula_moiety         'C14 H10 O2'
_chemical_formula_sum            'C14 H10 O2'
_chemical_formula_weight         210.22
_chemical_name_systematic
;
2-Methylxanthen-9-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                92.650(6)
_cell_angle_beta                 116.592(8)
_cell_angle_gamma                104.045(7)
_cell_formula_units_Z            2
_cell_length_a                   8.2678(7)
_cell_length_b                   8.5268(6)
_cell_length_c                   8.5965(7)
_cell_measurement_reflns_used    3639
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.1300
_cell_measurement_theta_min      3.5471
_cell_volume                     517.28(9)
_computing_cell_refinement       'CrysAlis PRO (Oxford Diffraction, 2010)'
_computing_data_collection       'CrysAlis PRO (Oxford Diffraction, 2010)'
_computing_data_reduction        'CrysAlis PRO (Oxford Diffraction, 2010)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'PLATON (Spek, 2009)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur Sapphire3'
_diffrn_measurement_method       'omega 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  0.0327
_diffrn_reflns_av_sigmaI/netI    0.0267
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            10601
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.55
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.88949
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrysAlis PRO; Oxford Diffraction, 2010)'
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.350
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             220
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.130
_refine_diff_density_min         -0.148
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     146
_refine_ls_number_reflns         2028
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0884
_refine_ls_R_factor_gt           0.0516
_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^)+(0.0652P)^2^+0.0822P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1300
_refine_ls_wR_factor_ref         0.1517
_reflns_number_gt                1262
_reflns_number_total             2028
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            cv5249.cif
_cod_data_source_block           I
_cod_original_cell_volume        517.28(7)
_cod_database_code               2233773
_cod_database_fobs_code          2233773