(<i>Z</i>)-3-(3-Phenylallylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione
Zeng, Wu-Lan; Zhang, Hua-Xiang; Jian, Fang-Fang; Acta Crystallographica Section E 65 (2009) o2586–; doi:10.1107/S1600536809038781

data_2223407
_publ_section_title
;
 (<i>Z</i>)-3-(3-Phenylallylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione
;
_journal_coeditor_code           HB5108
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2586
_journal_paper_doi               10.1107/S1600536809038781
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C18 H18 O4'
_chemical_formula_moiety         'C18 H18 O4'
_chemical_formula_sum            'C18 H18 O4'
_chemical_formula_weight         298.32
_chemical_name_systematic
;
(<i>Z</i>)-3-(3-Phenylallylidene)-1,5-dioxaspiro[5.5]undecane-2,4-dione
;
_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
_cell_angle_alpha                106.82(3)
_cell_angle_beta                 100.14(3)
_cell_angle_gamma                93.35(3)
_cell_formula_units_Z            2
_cell_length_a                   7.1177(14)
_cell_length_b                   9.5506(19)
_cell_length_c                   11.734(2)
_cell_measurement_reflns_used    3401
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      3.13
_cell_volume                     746.5(3)
_computing_cell_refinement       'SAINT (Bruker, 1997)'
_computing_data_collection       'SMART (Bruker, 1997)'
_computing_data_reduction        'SAINT (Bruker, 1997)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker SMART CCD'
_diffrn_measurement_method       \w
_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  0.0164
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_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            7448
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.13
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.327
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             316
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.18
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_refine_ls_hydrogen_treatment    constr
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_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^)+(0.0724P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1013
_refine_ls_wR_factor_ref         0.1300
_reflns_number_gt                2309
_reflns_number_total             3401
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hb5108.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:

'_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        746.6(3)
_cod_database_code               2223407
_cod_database_fobs_code          2223407