3-Phenylspiro[bicyclo[2.2.1]hept-5-ene-2,3'-chroman]-4'-one
Puviarasan, Krishnan.; Govindasamy, Lakshmanan.; Velmurugan, Devadesan.; Shanmuga Sundara Raj, Sivanantha Perumal.; Shanmuga sundaram, Muthian.; Raghunathan, Raghavachary.; Hoong-Kun Fun; Acta Crystallographica Section C 54 (1998) 961–963; doi:10.1107/S0108270198000110

data_2007399
_publ_section_title
;
 3-Phenylspiro[bicyclo[2.2.1]hept-5-ene-2,3'-chroman]-4'-one
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              961
_journal_page_last               963
_journal_paper_doi               10.1107/S0108270198000110
_journal_volume                  54
_journal_year                    1998
_chemical_formula_sum            'C21 H18 O2'
_chemical_formula_weight         302.35
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                100.9600(10)
_cell_angle_beta                 98.0100(10)
_cell_angle_gamma                105.110(10)
_cell_formula_units_Z            2
_cell_length_a                   6.7390(10)
_cell_length_b                   10.7310(10)
_cell_length_c                   11.6060(10)
_cell_measurement_reflns_used    44
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      10.58
_cell_measurement_theta_min      5.45
_cell_volume                     779.55(16)
_computing_cell_refinement       XSCANS
_computing_data_collection       'XSCANS (Siemens, 1994)'
_computing_data_reduction        XSCANS
_computing_molecular_graphics    'ZORTEP (Zsolnai, 1997)'
_computing_publication_material  'SHELXL97; PARST (Nardelli, 1995)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Siemens P4 diffractometer'
_diffrn_measurement_method       '\q/2\q 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  0.0168
_diffrn_reflns_av_sigmaI/netI    0.0334
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            4467
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         1.82
_diffrn_standards_decay_%        <3
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  0.9697
_exptl_absorpt_correction_T_min  0.9467
_exptl_absorpt_correction_type   'CYLABS (Nardelli, 1997)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.288
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'Rectangular block'
_exptl_crystal_F_000             320
_exptl_crystal_size_max          0.68
_exptl_crystal_size_mid          0.48
_exptl_crystal_size_min          0.38
_refine_diff_density_max         0.238
_refine_diff_density_min         -0.166
_refine_ls_extinction_coef       0.018(5)
_refine_ls_extinction_method     SHELXL97_(Sheldrick,_1997)
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         3567
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0561
_refine_ls_R_factor_gt           0.0415
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0773P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1298
_reflns_number_gt                2640
_reflns_number_total             3567
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ab1522.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0773P)^2^] where P=(Fo^2^+2Fc^2^)/3' was changed
to 'calc'. New tag '_refine_ls_weighting_details' was created. The
value of the new tag was set to 'w=1/[\s^2^(Fo^2^)+(0.0773P)^2^]
where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        779.54(10)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               2007399