Expanding the scope of strained-alkyne chemistry: a protection-deprotection strategy via the formation of a dicobalt-hexacarbonyl complex
Pierangelo Gobbo; Tommaso Romagnoli; Stephanie M. Barbon; Jacquelyn T. Price; Jennifer Keir; Joe B. Gilroy; Mark S. Workentin; Chem.Commun. 51 (2015) 6647–; doi:10.1039/C5cc01522G

data_7116916
_publ_section_title
;
 Expanding the scope of strained-alkyne chemistry: a
 protection-deprotection strategy via the formation of a
 dicobalt-hexacarbonyl complex
;
_journal_name_full               Chem.Commun.
_journal_page_first              6647
_journal_paper_doi               10.1039/C5cc01522G
_journal_volume                  51
_journal_year                    2015
_chemical_formula_sum            'C16 H14 Co2 O7'
_chemical_formula_weight         436.13
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014
_audit_update_record
;
2015-02-18 deposited with the CCDC.
2015-03-12 downloaded from the CCDC.
;
_cell_angle_alpha                101.280(16)
_cell_angle_beta                 102.130(12)
_cell_angle_gamma                103.697(12)
_cell_formula_units_Z            6
_cell_length_a                   8.893(3)
_cell_length_b                   16.495(6)
_cell_length_c                   19.797(9)
_cell_measurement_reflns_used    9914
_cell_measurement_temperature    110
_cell_measurement_theta_max      30.59
_cell_measurement_theta_min      2.82
_cell_volume                     2664.8(18)
_computing_cell_refinement       SAINT
_computing_data_collection       Apex2
_computing_data_reduction        SAINT
_computing_molecular_graphics    NRCVAX
_computing_publication_material  cif2tables.py
_computing_structure_refinement  SHELXL-2014
_computing_structure_solution    XS
_diffrn_ambient_temperature      110
_diffrn_detector                 'CCD plate'
_diffrn_detector_type            'Bruker Apex2'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       '\k-geometry diffractometer'
_diffrn_measurement_device_type  'Bruker Kappa Axis Apex2'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0234
_diffrn_reflns_av_unetI/netI     0.0259
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            47564
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.587
_diffrn_reflns_theta_min         2.933
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    1.900
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.565
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.631
_exptl_crystal_description       block
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.460
_exptl_crystal_size_mid          0.420
_exptl_crystal_size_min          0.082
_refine_diff_density_max         0.539
_refine_diff_density_min         -0.364
_refine_diff_density_rms         0.071
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     676
_refine_ls_number_reflns         16299
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0296
_refine_ls_R_factor_gt           0.0231
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0279P)^2^+0.7707P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0571
_refine_ls_wR_factor_ref         0.0600
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                14243
_reflns_number_total             16299
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5cc01522g2.cif
_cod_data_source_block           endo-2
_cod_original_cell_volume        2664.9(18)
_cod_database_code               7116916
_shelx_estimated_absorpt_t_min   0.475
_shelx_estimated_absorpt_t_max   0.860
_shelxl_version_number           2014-3
_shelx_res_checksum              99765