First Synthesis of Naphthalene Annulated Oxepins
Koenig, Burkhard; Dobelmann, Lars; Parham, Amir; Buchholz, Herwig; Buesing, Arne; RSC Adv.  (2014) –; doi:10.1039/C4RA10652K

data_7218701
_publ_section_title
;
 First Synthesis of Naphthalene Annulated Oxepins
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C4RA10652K
_journal_year                    2014
_chemical_formula_sum            'C20 H12 O'
_chemical_formula_weight         268.30
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_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
_cell_angle_alpha                90
_cell_angle_beta                 93.812(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.4538(3)
_cell_length_b                   13.4041(4)
_cell_length_c                   11.2408(4)
_cell_measurement_reflns_used    9928
_cell_measurement_temperature    100.(2)
_cell_measurement_theta_max      27.9204
_cell_measurement_theta_min      2.3677
_cell_volume                     1270.94(7)
_computing_cell_refinement       'APEX2 v2011.8-0 (Bruker AXS)'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'SAINT V7.68A (Bruker AXS, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0185
_diffrn_reflns_av_sigmaI/netI    0.0124
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            19500
_diffrn_reflns_theta_full        27.94
_diffrn_reflns_theta_max         27.94
_diffrn_reflns_theta_min         2.37
_diffrn_source_type              'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.7207
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2008/1 (Bruker AXS)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.402
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             560
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.645
_refine_diff_density_min         -0.241
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     190
_refine_ls_number_reflns         3013
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0532
_refine_ls_R_factor_gt           0.0461
_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^)+(0.0700P)^2^+0.8685P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1240
_refine_ls_wR_factor_ref         0.1305
_reflns_number_gt                2617
_reflns_number_total             3013
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ra10652k2.cif
_cod_data_source_block           I
_cod_database_code               7218701