Cyclobutene vs 1,3-Diene Formation in the Gold-Catalyzed Reaction of Alkynes with Alkenes: The Complete Mechanistic Picture.
de Orbe, M. Elena; Amenós, Laura; Kirillova, Mariia S.; Wang, Yahui; López-Carrillo, Verónica; Maseras, Feliu; Echavarren, Antonio M.; Journal of the American Chemical Society 139 (2017) 10302–10311; doi:10.1021/jacs.7b03005

data_4131287
_publ_section_title
;
 Cyclobutene vs 1,3-Diene Formation in the Gold-Catalyzed Reaction of
 Alkynes with Alkenes: The Complete Mechanistic Picture.
;
_journal_issue                   30
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              10302
_journal_page_last               10311
_journal_paper_doi               10.1021/jacs.7b03005
_journal_volume                  139
_journal_year                    2017
_chemical_formula_sum            'C33 H28 O'
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_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
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_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 91.340(2)
_cell_angle_gamma                90
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_cell_length_b                   5.5071(4)
_cell_length_c                   38.990(2)
_cell_measurement_reflns_used    5953
_cell_measurement_temperature    100(2)
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_cell_measurement_theta_min      2.30
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_computing_cell_refinement       'Bruker APEX2 v2014.9-0'
_computing_data_collection       'Bruker APEX2 v2014.9-0'
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_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 512
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_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.998
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_diffrn_measurement_method
;
 Fullsphere data collection, phi and omega scans
;
_diffrn_measurement_specimen_support 'magnetic support with MicroMount'
_diffrn_radiation_monochromator  'Quazar MX Multilayer Optics'
_diffrn_radiation_type           MoK\a
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_diffrn_reflns_av_unetI/netI     0.0755
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.998
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_diffrn_reflns_limit_k_min       -6
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_diffrn_reflns_limit_l_min       -47
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_diffrn_reflns_theta_max         25.553
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_diffrn_source                   'Microfocus source E025 IuS'
_diffrn_source_current           0.6
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_diffrn_source_size              '0.2 mm x 0.2 mm fine focus'
_diffrn_source_type              'Bruker APEX DUO'
_exptl_absorpt_coefficient_mu    0.072
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_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
; 
 SADABS Version 2008/1 Bruker-Nonius
 Blessing, Acta Cryst. (1995) A51 33-38
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.226
_exptl_crystal_description       needle
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_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.216
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_refine_ls_extinction_method     none
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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^)+(0.0330P)^2^+2.8664P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1127
_refine_ls_wR_factor_ref         0.1266
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5909
_reflns_number_total             8935
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b03005_si_005.cif
_cod_data_source_block           mo_KMS_M27_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4131287
_shelx_estimated_absorpt_t_min   0.965
_shelx_estimated_absorpt_t_max   0.993
_shelxl_version_number           2014-3
_shelx_res_checksum              35699
_shelx_hkl_checksum              27517