Access to Substituted Cyclobutenes by Tandem [3,3]-Sigmatropic Rearrangement/[2+2] Cycloaddition of Dipropargylphosphonates under Ag/Co Relay Catalysis
Ni, Qijian; Song, Xiaoxiao; Png, Chin Wen; Zhang, Yongliang; Zhao, Yu; Chemical Science  (2020) –; doi:10.1039/D0SC02972F

data_1559372
_publ_section_title
;
 Access to Substituted Cyclobutenes by Tandem [3,3]-Sigmatropic
 Rearrangement/[2+2] Cycloaddition of Dipropargylphosphonates under Ag/Co
 Relay Catalysis
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/D0SC02972F
_journal_year                    2020
_chemical_formula_moiety         'C26 H23 O3 P'
_chemical_formula_sum            'C26 H23 O3 P'
_chemical_formula_weight         414.41
_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'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2020-05-26 deposited with the CCDC.	2020-10-16 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 92.316(9)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.668(5)
_cell_length_b                   13.512(4)
_cell_length_c                   10.815(3)
_cell_measurement_reflns_used    1151
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.182
_cell_measurement_theta_min      2.413
_cell_volume                     2141.7(11)
_computing_cell_refinement
'SHELXTL, Acta Cryst., Sect. A 2008, 64, 112-122.'
_computing_data_collection       'APEX3 v2016.5.0'
_computing_data_reduction        'Saint, APEX v2014.11.0.'
_computing_molecular_graphics    Ortep3
_computing_publication_material  'APEX3 v2016.5.0'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT, Acta Cryst., Sect. A 2015, A71, 3-8.'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker AXS D8 Venture '
_diffrn_measurement_method       'profile data from \q/2\q scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0655
_diffrn_reflns_av_unetI/netI     0.0540
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.990
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            31655
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.990
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.182
_diffrn_reflns_theta_min         2.413
_exptl_absorpt_coefficient_mu    0.153
_exptl_absorpt_correction_T_max  0.983
_exptl_absorpt_correction_T_min  0.949
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            'LIGHT YELLOW'
_exptl_crystal_density_diffrn    1.285
_exptl_crystal_description       'PRISM FRAG'
_exptl_crystal_F_000             872
_exptl_crystal_size_max          0.344
_exptl_crystal_size_mid          0.233
_exptl_crystal_size_min          0.112
_refine_diff_density_max         0.324
_refine_diff_density_min         -0.431
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     273
_refine_ls_number_reflns         6290
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.0753
_refine_ls_R_factor_gt           0.0456
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0446P)^2^+0.9664P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0968
_refine_ls_wR_factor_ref         0.1073
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4671
_reflns_number_total             6290
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0sc02972f2.cif
_cod_data_source_block           g766
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'MULTI-SCAN' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/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 7556 2019-12-06 15:28:31Z antanas 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               1559372
_shelx_estimated_absorpt_t_min   0.949
_shelx_estimated_absorpt_t_max   0.983
_shelx_res_checksum              10957