Studies on transannulation reactions across a nine-membered ring: the synthesis of natural product-like structures.
Iqbal, Mudassar; Black, Richard J. G.; Winn, Joby; Reeder, Andrew T.; Blake, Alexander J.; Clarke, Paul A.; Organic & biomolecular chemistry 9 (2011) 5062–5078; doi:10.1039/c1ob05448a

data_7151937
_publ_section_title
;
 Studies on transannulation reactions across a nine-membered ring: the
 synthesis of natural product-like structures.
;
_journal_issue                   14
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5062
_journal_page_last               5078
_journal_paper_doi               10.1039/c1ob05448a
_journal_volume                  9
_journal_year                    2011
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C12 H16 O3'
_chemical_formula_sum            'C12 H16 O3'
_chemical_formula_weight         208.25
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_method           'enCIFer editing of SHELXL97 CIF output'
_cell_angle_alpha                90.00
_cell_angle_beta                 112.922(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   24.170(4)
_cell_length_b                   7.6936(12)
_cell_length_c                   12.380(2)
_cell_measurement_reflns_used    1996
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.4
_cell_measurement_theta_min      2.8
_cell_volume                     2120.3(6)
_computing_cell_refinement       'Bruker SAINT version 6.36a (Bruker, 2002)'
_computing_data_collection       'Bruker SMART version 5.624 (Bruker, 2001)'
_computing_data_reduction        'Bruker SAINT; Bruker SHELXTL (Bruker, 2001)'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'enCIFer (Allen et al., 2004); PLATON'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1998)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'Bruker SMART1000 CCD area detector'
_diffrn_measurement_method       omega
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.084
_diffrn_reflns_av_sigmaI/netI    0.079
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            5895
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.83
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.305
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.75
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.30
_refine_diff_density_min         -0.21
_refine_diff_density_rms         0.06
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.96
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     271
_refine_ls_number_reflns         2566
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.96
_refine_ls_R_factor_all          0.0637
_refine_ls_R_factor_gt           0.0487
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.063P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.114
_refine_ls_wR_factor_ref         0.121
_reflns_number_gt                1989
_reflns_number_total             2566
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1ob05448a.txt
_cod_data_source_block           olcmen
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'None' changed to
'none' 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        2120.3(10)
_cod_original_sg_symbol_H-M      'C 2'
_cod_database_code               7151937