Rearrangements and addition reactions of biarylazacyclooctynones and the implications to copper-free click chemistry.
Chigrinova, Mariya; McKay, Craig S.; Beaulieu, Louis-Philippe B; Udachin, Konstantin A.; Beauchemin, André M; Pezacki, John Paul; Organic & biomolecular chemistry 11 (2013) 3436–3441; doi:10.1039/c3ob40683k

data_7152964
_publ_section_title
;
 Rearrangements and addition reactions of biarylazacyclooctynones and the
 implications to copper-free click chemistry.
;
_journal_issue                   21
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              3436
_journal_page_last               3441
_journal_paper_doi               10.1039/c3ob40683k
_journal_volume                  11
_journal_year                    2013
_chemical_formula_sum            'C26 H20 N2 O3'
_chemical_formula_weight         408.44
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 98.866(18)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.4793(18)
_cell_length_b                   20.849(7)
_cell_length_c                   17.361(6)
_cell_measurement_temperature    100.0(1)
_cell_volume                     1959.6(11)
_computing_cell_refinement       'SAINT (Bruker, 2006)'
_computing_data_collection       'APEX2 (Bruker, 2006)'
_computing_data_reduction        'SAINT (Bruker, 2006)'
_computing_molecular_graphics    'ATOMS V.5.0'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100.0(1)
_diffrn_measured_fraction_theta_full 0.953
_diffrn_measured_fraction_theta_max 0.953
_diffrn_measurement_device_type  'Bruker Kappa APEXII CCD'
_diffrn_measurement_method       ' \f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.3444
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            38280
_diffrn_reflns_theta_full        24.71
_diffrn_reflns_theta_max         24.71
_diffrn_reflns_theta_min         1.54
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  0.9995
_exptl_absorpt_correction_T_min  0.9643
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.384
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             856
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.686
_refine_diff_density_min         -0.415
_refine_diff_density_rms         0.093
_refine_ls_extinction_coef       0.0186(11)
_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   1.048
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     283
_refine_ls_number_reflns         3457
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.2642
_refine_ls_R_factor_gt           0.1245
_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^)+(0.0000P)^2^+0.0003P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2698
_refine_ls_wR_factor_ref         0.3401
_reflns_number_gt                1520
_reflns_number_total             3457
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ob40683k.txt
_cod_data_source_block           baracb
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7152964