Investigations into an Anionic Oxy-Cope/Transannular Conjugate Addition Approach to 7,20-Diisocyanoadociane.
Roosen, Philipp C.; Vanderwal, Christopher D.; Organic letters 16 (2014) 4368–; doi:10.1021/ol502205m

data_1517388
_publ_section_title
;
 Investigations into an Anionic Oxy-Cope/Transannular Conjugate Addition
 Approach to 7,20-Diisocyanoadociane.
;
_journal_issue                   17
_journal_name_full               'Organic letters'
_journal_page_first              4368
_journal_paper_doi               10.1021/ol502205m
_journal_volume                  16
_journal_year                    2014
_chemical_formula_sum            'C18 H26 O2'
_chemical_formula_weight         274.39
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
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_cell_angle_alpha                90
_cell_angle_beta                 101.7717(11)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.5541(7)
_cell_length_b                   8.9646(8)
_cell_length_c                   20.1698(17)
_cell_measurement_reflns_used    5076
_cell_measurement_temperature    143(2)
_cell_measurement_theta_max      27.94
_cell_measurement_theta_min      2.43
_cell_volume                     1514.2(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
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_computing_publication_material  'Bruker SHELXTL'
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_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      143(2)
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_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
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_diffrn_reflns_av_R_equivalents  0.0255
_diffrn_reflns_av_unetI/netI     0.0258
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
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_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            11171
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_theta_full        25.500
_diffrn_reflns_theta_max         27.094
_diffrn_reflns_theta_min         2.063
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  0.8621
_exptl_absorpt_correction_T_min  0.8061
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_exptl_crystal_colour            colorless
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_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    not_measured
_exptl_crystal_description       prism
_exptl_crystal_F_000             600
_exptl_crystal_size_max          0.388
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_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         3309
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0520
_refine_ls_R_factor_gt           0.0401
_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^)+(0.0530P)^2^+0.4901P] 
 where P=(Fo^2^+2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1000
_refine_ls_wR_factor_ref         0.1072
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2684
_reflns_number_total             3309
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol502205m_si_002.cif
_cod_data_source_block           cdv27
_cod_depositor_comments
;Adding full bibliography for 1517387--1517389.cif.

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not_measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_database_code               1517388
_shelx_estimated_absorpt_t_min   0.971
_shelx_estimated_absorpt_t_max   0.987
_shelxl_version_number           2012-6
_shelx_res_checksum              42369
_shelx_hkl_checksum              10867