Synthesis and Conformational Dynamics of the Reported Structure of Xylopyridine A
Robert-André F. Rarig; Mai N. Tran; David M. Chenoweth; Journal of the American Chemical Society 135 (2013) 9213–9219; doi:10.1021/ja404737q

data_4119958
_publ_section_title
;
 Synthesis and Conformational Dynamics of the Reported Structure of
 Xylopyridine A
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9213
_journal_page_last               9219
_journal_paper_doi               10.1021/ja404737q
_journal_volume                  135
_journal_year                    2013
_chemical_formula_sum            'C24 H14 N2 O2'
_chemical_formula_weight         362.37
_space_group_IT_number           88
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      88
_symmetry_space_group_name_Hall  '-I 4ad'
_symmetry_space_group_name_H-M   'I 41/a :2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   18.5111(12)
_cell_length_b                   18.5111(12)
_cell_length_c                   9.7964(7)
_cell_measurement_temperature    143(1)
_cell_volume                     3356.8(4)
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      143(1)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'CCD Area Detector'
_diffrn_measurement_device_type  'Bruker APEXII'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0323
_diffrn_reflns_av_sigmaI/netI    0.0097
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            35582
_diffrn_reflns_theta_full        26.40
_diffrn_reflns_theta_max         26.40
_diffrn_reflns_theta_min         2.20
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.6814
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2007)'
_exptl_crystal_density_diffrn    1.434
_exptl_crystal_F_000             1504
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.163
_refine_diff_density_min         -0.137
_refine_diff_density_rms         0.029
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     159
_refine_ls_number_reflns         1722
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0358
_refine_ls_R_factor_gt           0.0308
_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^)+(0.0357P)^2^+2.3086P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0760
_refine_ls_wR_factor_ref         0.0805
_reflns_number_gt                1525
_reflns_number_total             1722
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja404737q_si_002.cif
_cod_data_source_block           shelxl
_cod_original_sg_symbol_H-M      'I 41/a '
_cod_database_code               4119958