Bromonium Ion Induced Transannular Oxonium Ion Formation-Fragmentation in Model Obtusallene Systems and Structural Reassignment of Obtusallenes V-VII
D. Christopher Braddock; David S. Millan; Yolanda Pérez-Fuertes; Rebecca H. Pouwer; Richard N. Sheppard; Savade Solanki; Andrew J. P. White; Journal of Organic Chemistry 74 (2009) 1835–1841; doi:10.1021/jo8026577

data_4024384
_publ_section_title
;
Bromonium Ion Induced Transannular Oxonium Ion Formation-Fragmentation in
Model Obtusallene Systems and Structural Reassignment of Obtusallenes
V-VII
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              1835
_journal_page_last               1841
_journal_paper_doi               10.1021/jo8026577
_journal_volume                  74
_journal_year                    2009
_chemical_formula_moiety         'C11 H16 Br Cl O2'
_chemical_formula_sum            'C11 H16 Br Cl O2'
_chemical_formula_weight         295.60
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90
_cell_angle_beta                 95.0480(13)
_cell_angle_gamma                90
_cell_formula_units_Z            12
_cell_length_a                   10.08901(12)
_cell_length_b                   14.1397(2)
_cell_length_c                   26.0378(4)
_cell_measurement_reflns_used    20098
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      32.3250
_cell_measurement_theta_min      3.7760
_cell_volume                     3700.03(9)
_computing_cell_refinement       'CrysAlis RED, Oxford Diffraction Ltd'
_computing_data_collection       'CrysAlis CCD, Oxford Diffraction Ltd'
_computing_data_reduction        'CrysAlis RED, Oxford Diffraction Ltd'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 15.9863
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.914
_diffrn_measurement_device_type  'OD Xcalibur 3'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0618
_diffrn_reflns_av_sigmaI/netI    0.0643
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            51476
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         32.33
_diffrn_reflns_theta_min         3.78
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.528
_exptl_absorpt_correction_T_max  0.789
_exptl_absorpt_correction_T_min  0.331
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
; 
CrysAlis RED, Oxford Diffraction Ltd., 
Version 1.171.32.5 (release 08-05-2007 CrysAlis171 .NET) 
(compiled May  8 2007,13:10:02) 
Analytical numeric absorption correction using a multifaceted crystal 
model based on expressions derived by R.C. Clark & J.S. Reid. 
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897) 
;
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.592
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             1800
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.807
_refine_diff_density_min         -0.683
_refine_diff_density_rms         0.112
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.134
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     406
_refine_ls_number_reflns         12075
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.134
_refine_ls_R_factor_all          0.1116
_refine_ls_R_factor_gt           0.0583
_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^)+(0.0184P)^2^+5.3793P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0813
_refine_ls_wR_factor_ref         0.0989
_reflns_number_gt                7802
_reflns_number_total             12075
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo8026577_si_002_2.cif
_cod_data_source_block           Compound_15
_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.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4024384