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_4131285
_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            'C34 H30 O'
_chemical_formula_weight         454.58
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 119.147(3)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   24.623(2)
_cell_length_b                   15.4246(14)
_cell_length_c                   15.0059(14)
_cell_measurement_reflns_used    6731
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.63
_cell_measurement_theta_min      2.64
_cell_volume                     4977.6(8)
_computing_cell_refinement       'Bruker APEX2 v2011.4-0'
_computing_data_collection       'Bruker APEX2 v2011.4-0'
_computing_data_reduction        'Bruker SAINT V7.60A'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    Sir2011
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 512
_diffrn_detector_type            '4K CCD area detector APEX II'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'APEX DUO Kappa 4-axis goniometer'
_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
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0359
_diffrn_reflns_av_unetI/netI     0.0432
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       34
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            24823
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.758
_diffrn_reflns_theta_min         1.625
_diffrn_source                   'Microfocus source E025 IuS'
_diffrn_source_current           0.6
_diffrn_source_power             50
_diffrn_source_size              '0.2 mm x 0.2 mm fine focus'
_diffrn_source_type              'Bruker APEX DUO'
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_T_max  0.997
_exptl_absorpt_correction_T_min  0.924
_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    1.213
_exptl_crystal_description       plate
_exptl_crystal_F_000             1936
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.399
_refine_diff_density_min         -0.248
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     318
_refine_ls_number_reflns         7094
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0728
_refine_ls_R_factor_gt           0.0488
_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^)+(0.0548P)^2^+4.2487P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1144
_refine_ls_wR_factor_ref         0.1285
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5271
_reflns_number_total             7094
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b03005_si_007.cif
_cod_data_source_block           mo_KMSM41_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_cell_volume        4977.5(8)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4131285
_shelx_estimated_absorpt_t_min   0.972
_shelx_estimated_absorpt_t_max   0.997
_shelxl_version_number           2014-3
_shelx_res_checksum              96790
_shelx_hkl_checksum              17842