Ring-Closure Reactions of 1,2-Diaza-4,5-benzoheptatrienyl Metal Compounds: Experiment and Theory
Tillmann Kleine; Klaus Bergander; Roland Fröhlich; Birgit Wibbeling; Ernst-Ulrich Würthwein; Journal of Organic Chemistry 76 (2011) 1979–1991; doi:10.1021/jo2001534

data_4026176
_publ_section_title
;
 Ring-Closure Reactions of 1,2-Diaza-4,5-benzoheptatrienyl Metal
 Compounds: Experiment and Theory
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              1979
_journal_page_last               1991
_journal_paper_doi               10.1021/jo2001534
_journal_volume                  76
_journal_year                    2011
_chemical_formula_sum            'C20 H22 N2 O'
_chemical_formula_weight         306.40
_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                 97.527(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.9552(4)
_cell_length_b                   18.8208(12)
_cell_length_c                   15.8660(13)
_cell_measurement_reflns_used    2797
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      68.25
_cell_measurement_theta_min      0.88
_cell_volume                     1763.0(2)
_computing_cell_refinement       'Collect (Nonius B.V., 1998)'
_computing_data_collection       'Collect (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP (BruekrAXS, 2000)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.933
_diffrn_measured_fraction_theta_max 0.933
_diffrn_measurement_device_type  'Nonius KappaCCD APEXII'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.092
_diffrn_reflns_av_sigmaI/netI    0.0472
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            11779
_diffrn_reflns_theta_full        67.67
_diffrn_reflns_theta_max         67.67
_diffrn_reflns_theta_min         5.48
_exptl_absorpt_coefficient_mu    0.559
_exptl_absorpt_correction_T_max  0.9726
_exptl_absorpt_correction_T_min  0.8503
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.154
_exptl_crystal_description       needle
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.435
_refine_diff_density_min         -0.268
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     211
_refine_ls_number_reflns         2974
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.1280
_refine_ls_R_factor_gt           0.0912
_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^)+(0.1443P)^2^+1.4141P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2324
_refine_ls_wR_factor_ref         0.2714
_reflns_number_gt                1982
_reflns_number_total             2974
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo2001534_si_005.cif
_cod_data_source_block           wue4373
_cod_database_code               4026176