Molecular photoswitches based on spiro-acridans
Alina Raskosova; Reinhard Stosser; Werner Abraham; Chem.Commun. 49 (2013) 3964–; doi:10.1039/c3cc41135d

data_7109168
_publ_section_title
;
 Molecular photoswitches based on spiro-acridans
;
_journal_name_full               Chem.Commun.
_journal_page_first              3964
_journal_paper_doi               10.1039/c3cc41135d
_journal_volume                  49
_journal_year                    2013
_chemical_formula_moiety         'C21 H17 N O'
_chemical_formula_sum            'C21 H17 N O'
_chemical_formula_weight         299.36
_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                77.384(4)
_cell_angle_beta                 72.856(4)
_cell_angle_gamma                72.749(4)
_cell_formula_units_Z            4
_cell_length_a                   10.6160(5)
_cell_length_b                   12.2924(6)
_cell_length_c                   12.6394(6)
_cell_measurement_reflns_used    37104
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.59
_cell_measurement_theta_min      3.33
_cell_volume                     1489.62(13)
_computing_cell_refinement       'X-AREA (Stoe & Cie, 2002)'
_computing_data_collection       'X-AREA (Stoe & Cie, 2002)'
_computing_data_reduction        'X-RED (Stoe & Cie, 2002)'
_computing_molecular_graphics    'PLATON, 1990'
_computing_publication_material  'PLATON, 1990'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'Stoe IPDS-2t diffractometer'
_diffrn_measurement_method       'rotation method'
_diffrn_radiation_collimation    '0.5 mm diameter monocapillary'
_diffrn_radiation_monochromator  'planar graphite'
_diffrn_radiation_source         'long fine focus sealed X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0437
_diffrn_reflns_av_sigmaI/netI    0.0323
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            20471
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.33
_diffrn_standards_decay_%        'no decay'
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.335
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.46
_exptl_crystal_size_min          0.42
_refine_diff_density_max         0.281
_refine_diff_density_min         -0.245
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     417
_refine_ls_number_reflns         6831
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0443
_refine_ls_R_factor_gt           0.0371
_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^)+(0.0526P)^2^+0.2883P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0954
_refine_ls_wR_factor_ref         0.0984
_reflns_number_gt                5861
_reflns_number_total             6831
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc41135d.txt
_cod_data_source_block           5racr
_cod_original_cell_volume        1489.62(12)
_cod_original_sg_symbol_Hall     -P1
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7109168