The Baylis–Hillman acetates in organic synthesis: Unprecedented sodium nitrite induced intramolecular Friedel–Crafts cyclization of secondary nitro compounds
Basavaiah, Deevi; Reddy, Daggula Mallikarjuna; RSC Adv. 4 (2014) 23966–; doi:10.1039/C4RA03573A

data_7235698
_publ_section_title
;
 The Baylis--Hillman acetates in organic synthesis: Unprecedented sodium
 nitrite induced intramolecular Friedel--Crafts cyclization of secondary
 nitro compounds
;
_journal_issue                   46
_journal_name_full               'RSC Adv.'
_journal_page_first              23966
_journal_paper_doi               10.1039/C4RA03573A
_journal_volume                  4
_journal_year                    2014
_chemical_formula_moiety         'C22 H16 O2'
_chemical_formula_sum            'C22 H16 O2'
_chemical_formula_weight         312.35
_chemical_melting_point          370(1)
_chemical_name_common            phenanthrenes
_chemical_name_systematic
;
 methyl 4-phenylphenanthrene-2-carboxylate
;
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_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                 90.458(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.057(2)
_cell_length_b                   7.6437(18)
_cell_length_c                   23.756(5)
_cell_measurement_reflns_used    8942
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.05
_cell_measurement_theta_min      2.40
_cell_volume                     1644.6(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0316
_diffrn_reflns_av_sigmaI/netI    0.0238
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            14733
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.71
_exptl_absorpt_coefficient_mu    0.080
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9694
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.262
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.228
_refine_diff_density_min         -0.265
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.208
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         2884
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.208
_refine_ls_R_factor_all          0.0848
_refine_ls_R_factor_gt           0.0792
_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^)+(0.0723P)^2^+2.6850P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2351
_refine_ls_wR_factor_ref         0.2379
_reflns_number_gt                2576
_reflns_number_total             2884
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c4ra03573a3.cif
_cod_data_source_block           5s
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        1644.5(7)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7235698