Diels–Alder Cycloaddition and Ring-Closing Metathesis: A Versatile, Stereoselective, and General Route to Embellished Bridged Bicyclic Systems, Carbocyclic Framework of Secoatisanes, and Homologues
Singh, Vishwakarma; Sahu, Pramod K.; Sahu, Bharat C.; Mobin, Shaikh M.; Journal of Organic Chemistry 74 (2009) 6092–6104; doi:10.1021/jo901279g

data_4024791
_publ_section_title
;
 Diels--Alder Cycloaddition and Ring-Closing Metathesis:
 A Versatile, Stereoselective, and General Route to Embellished Bridged
 Bicyclic Systems, Carbocyclic Framework of Secoatisanes, and Homologues
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_journal_coden_ASTM              JOCEAH
_journal_issue                   16
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              6092
_journal_page_last               6104
_journal_paper_doi               10.1021/jo901279g
_journal_volume                  74
_journal_year                    2009
_chemical_formula_sum            'C14 H18 O2'
_chemical_formula_weight         218.28
_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                98.169(7)
_cell_angle_beta                 100.674(10)
_cell_angle_gamma                90.637(10)
_cell_formula_units_Z            2
_cell_length_a                   8.1740(16)
_cell_length_b                   8.4240(6)
_cell_length_c                   8.5710(7)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      12.0100
_cell_measurement_theta_min      6.0100
_cell_volume                     573.66(13)
_computing_cell_refinement       'Argus (Nonius, MACH3 software)'
_computing_data_collection       'Argus (Nonius, MACH3 software)'
_computing_data_reduction        'Maxus (Nonius software)'
_computing_molecular_graphics    Ortep
_computing_publication_material  Shelx97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.906
_diffrn_measured_fraction_theta_max 0.906
_diffrn_measurement_device_type  'Enraf-Nonius CAD-4'
_diffrn_measurement_method       \w/q-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           ' MoK\a'
_diffrn_radiation_wavelength     0.70930
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_diffrn_reflns_av_sigmaI/netI    0.0210
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_diffrn_reflns_limit_k_min       -9
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_diffrn_reflns_limit_l_min       -10
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_diffrn_reflns_theta_full        24.91
_diffrn_reflns_theta_max         24.91
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_diffrn_standards_decay_%        <3%
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_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.991
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details
;
psi-scan (North, Philips & Mathews, 1968)
;
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.264
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             236
_exptl_crystal_size_max          0.35
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_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0369P)^2^+0.1503P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0803
_refine_ls_wR_factor_ref         0.0853
_reflns_number_gt                1606
_reflns_number_total             1820
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo901279g_si_005.cif
_cod_data_source_block           VKS12A
_cod_depositor_comments
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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^)+(0.0369P)^2^+0.1503P] 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^)+(0.0369P)^2^+0.1503P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
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_cod_database_code               4024791