A Combined NMR, DFT, and X-ray Investigation of Some Cinchona Alkaloid O-Ethers
Igor Busygin; Ville Nieminen; Antti Taskinen; Jari Sinkkonen; Esa Toukoniitty; Reijo Sillanpää; Dmitry Yu. Murzin; Reko Leino; Journal of Organic Chemistry 73 (2008) 6559–6569; doi:10.1021/jo8008462

data_4023633
_publ_section_title
;
 A Combined NMR, DFT, and X-ray Investigation
 of Some Cinchona Alkaloid O-Ethers
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              6559
_journal_page_last               6569
_journal_paper_doi               10.1021/jo8008462
_journal_volume                  73
_journal_year                    2008
_chemical_formula_moiety         'C25 H26 N2 O'
_chemical_formula_sum            'C25 H26 N2 O'
_chemical_formula_weight         370.48
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.5562(7)
_cell_length_b                   16.5242(19)
_cell_length_c                   18.603(2)
_cell_measurement_reflns_used    8575
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      63.691
_cell_measurement_theta_min      0.883
_cell_volume                     2015.4(4)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.965
_diffrn_measured_fraction_theta_max 0.965
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_radiation_monochromator  'horizonally mounted graphite crystal'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0736
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            3105
_diffrn_reflns_theta_full        63.42
_diffrn_reflns_theta_max         63.42
_diffrn_reflns_theta_min         3.58
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    0.578
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.221
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.186
_refine_diff_density_min         -0.227
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.5(8)
_refine_ls_extinction_coef       0.0018(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.090
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         3105
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.090
_refine_ls_R_factor_all          0.1184
_refine_ls_R_factor_gt           0.0704
_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^)+(0.0427P)^2^+2.0118P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1394
_refine_ls_wR_factor_ref         0.1678
_reflns_number_gt                2141
_reflns_number_total             3105
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            jo8008462-file005.cif
_cod_data_source_block           phocd
_cod_database_code               4023633