Photochemical generation, intramolecular reactions, and spectroscopic detection of oxonium ylide and carbene intermediates in a crystalline ortho-(1,3-dioxolan-2-yl)-diaryldiazomethane.
Garcia-Garibay, Miguel A; Dang, Hung; Organic & biomolecular chemistry 7 (2009) 1106–1114; doi:10.1039/b814387k

data_7150531
_publ_section_title
;
 Photochemical generation, intramolecular reactions, and spectroscopic
 detection of oxonium ylide and carbene intermediates in a crystalline
 ortho-(1,3-dioxolan-2-yl)-diaryldiazomethane.
;
_journal_issue                   6
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              1106
_journal_page_last               1114
_journal_paper_doi               10.1039/b814387k
_journal_volume                  7
_journal_year                    2009
_chemical_formula_moiety         'C22 H18 N2 O2'
_chemical_formula_sum            'C22 H18 N2 O2'
_chemical_formula_weight         342.38
_chemical_name_systematic
;
?
;
_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                93.98(1)
_cell_angle_beta                 93.60(1)
_cell_angle_gamma                90.25(2)
_cell_formula_units_Z            2
_cell_length_a                   6.074(1)
_cell_length_b                   11.401(1)
_cell_length_c                   12.309(2)
_cell_measurement_reflns_used    4089
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.34
_cell_measurement_theta_min      2.86
_cell_volume                     848.6(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.917
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0138
_diffrn_reflns_av_sigmaI/netI    0.0247
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            5564
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.66
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.9828
_exptl_absorpt_correction_T_min  0.9451
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Bruker)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.340
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelet
_exptl_crystal_F_000             360
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.311
_refine_diff_density_min         -0.201
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.087
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         3874
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.087
_refine_ls_R_factor_all          0.0483
_refine_ls_R_factor_gt           0.0398
_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^)+(0.0737P)^2^+0.0244P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1135
_refine_ls_wR_factor_ref         0.1185
_reflns_number_gt                3189
_reflns_number_total             3874
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b814387k.txt
_cod_data_source_block           gg230s
_cod_database_code               7150531