Azaarene cis-dihydrodiol-derived 2,2'-bipyridine ligands for asymmetric allylic oxidation and cyclopropanation.
Boyd, Derek R; Sharma, Narain D; Sbircea, Lenuta; Murphy, Deirdre; Belhocine, Tayeb; Malone, John F; James, Stuart L; Allen, Christopher C R; Hamilton, John T G; Chemical communications (Cambridge, England)  (2008) 5535–5537; doi:10.1039/b814678k

data_7103520
_publ_section_title
;
 Azaarene cis-dihydrodiol-derived 2,2'-bipyridine ligands for
 asymmetric allylic oxidation and cyclopropanation.
;
_journal_issue                   43
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              5535
_journal_page_last               5537
_journal_paper_doi               10.1039/b814678k
_journal_year                    2008
_chemical_formula_moiety         'C24 H28 N2 O4'
_chemical_formula_sum            'C24 H28 N2 O4'
_chemical_formula_weight         408.48
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 93.646(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.113(5)
_cell_length_b                   7.730(4)
_cell_length_c                   13.915(7)
_cell_measurement_reflns_used    699
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      20.96
_cell_measurement_theta_min      2.93
_cell_volume                     1085.6(9)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Brukar SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker SMART CCD area detector'
_diffrn_measurement_method       'phi and omega scan'
_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  0.0267
_diffrn_reflns_av_sigmaI/netI    0.0450
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            8987
_diffrn_reflns_theta_full        23.34
_diffrn_reflns_theta_max         23.34
_diffrn_reflns_theta_min         1.47
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.9873
_exptl_absorpt_correction_T_min  0.9506
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.250
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             436
_exptl_crystal_size_max          .60
_exptl_crystal_size_mid          .25
_exptl_crystal_size_min          .15
_refine_diff_density_max         0.278
_refine_diff_density_min         -0.182
_refine_diff_density_rms         0.064
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.3(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.950
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     275
_refine_ls_number_reflns         3141
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.950
_refine_ls_R_factor_all          0.0800
_refine_ls_R_factor_gt           0.0449
_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^)+(0.0727P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1042
_refine_ls_wR_factor_ref         0.1321
_reflns_number_gt                1966
_reflns_number_total             3141
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b814678k.txt
_cod_data_source_block           2F
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               7103520