Methyl 3,5-bis[(3-chloropyrazin-2-yl)oxy]benzoate
Srinivasan, Thothadri; Kalpana, Venkatesan; Rajakumar, Perumal; Velmurugan, Devadasan; Acta Crystallographica Section E 69 (2013) o777–; doi:10.1107/S1600536813010465

data_2237982
_publ_section_title
;
 Methyl 3,5-bis[(3-chloropyrazin-2-yl)oxy]benzoate
;
_journal_coeditor_code           PV2625
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o777
_journal_paper_doi               10.1107/S1600536813010465
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C16 H10 Cl2 N4 O4'
_chemical_formula_moiety         'C16 H10 Cl2 N4 O4'
_chemical_formula_sum            'C16 H10 Cl2 N4 O4'
_chemical_formula_weight         393.18
_chemical_name_systematic
;
Methyl 3,5-bis[(3-chloropyrazin-2-yl)oxy]benzoate
;
_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                88.592(10)
_cell_angle_beta                 74.974(9)
_cell_angle_gamma                73.231(9)
_cell_formula_units_Z            2
_cell_length_a                   8.5437(15)
_cell_length_b                   9.2984(18)
_cell_length_c                   11.545(2)
_cell_measurement_reflns_used    3453
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.57
_cell_measurement_theta_min      1.83
_cell_volume                     846.9(3)
_computing_cell_refinement       'SAINT (Bruker, 2008)'
_computing_data_collection       'APEX2 (Bruker, 2008)'
_computing_data_reduction        'SAINT (Bruker, 2008)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 2012)'
_computing_publication_material
'SHELXL97 (Sheldrick, 2008) and 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 0.988
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type
'Bruker SMART APEXII area-detector diffractometer'
_diffrn_measurement_method       '\w and \f 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  0.0244
_diffrn_reflns_av_sigmaI/netI    0.0201
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            12425
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.57
_diffrn_reflns_theta_min         1.83
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.414
_exptl_absorpt_correction_T_max  0.9217
_exptl_absorpt_correction_T_min  0.8858
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(<i>SADABS</i>; Bruker, 2008)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.542
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             400
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.304
_refine_diff_density_min         -0.457
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     236
_refine_ls_number_reflns         3453
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0438
_refine_ls_R_factor_gt           0.0393
_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^)+(0.0678P)^2^+0.3652P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1175
_refine_ls_wR_factor_ref         0.1239
_reflns_number_gt                3076
_reflns_number_total             3453
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            pv2625.cif
_cod_data_source_block           I
_cod_database_code               2237982
_cod_database_fobs_code          2237982