Simple ZnEt2 as catalyst in carbodiimide hydroalkynylation: structural and mechanistic studies
Martínez, Antonio; Moreno-Blázquez, Sonia; Rodriguez-Dieguez, Antonio; Ramos, Alberto; Fernandez-Galan, Rafael; Antiñolo, Antonio; CARRILLO-HERMOSILLA, FERNANDO; Dalton Trans.  (2017) –; doi:10.1039/C7DT02700A

data_7044118
_publ_section_title
;
 Simple ZnEt2 as catalyst in carbodiimide hydroalkynylation: structural
 and mechanistic studies
;
_journal_name_full               'Dalton Trans.'
_journal_paper_doi               10.1039/C7DT02700A
_journal_year                    2017
_chemical_formula_sum            'C39 H47 N5 O Zn'
_chemical_formula_weight         667.18
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2017-06-06 deposited with the CCDC.
2017-09-04 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.3796(8)
_cell_length_b                   15.6315(13)
_cell_length_c                   24.742(2)
_cell_measurement_reflns_used    9960
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.52
_cell_measurement_theta_min      2.51
_cell_volume                     3627.6(5)
_computing_cell_refinement       'Bruker Apex II'
_computing_data_collection       'Bruker ApexII'
_computing_data_reduction        'Bruker Apex II'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       'Phi and Omega Scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1577
_diffrn_reflns_av_unetI/netI     0.0726
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            69242
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.368
_diffrn_reflns_theta_min         2.322
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.713
_exptl_absorpt_correction_T_max  0.746
_exptl_absorpt_correction_T_min  0.699
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Bruker SADABS (Bruker, 1999)'
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.222
_exptl_crystal_description       Prismatic
_exptl_crystal_F_000             1416
_refine_diff_density_max         1.385
_refine_diff_density_min         -0.829
_refine_diff_density_rms         0.088
_refine_ls_abs_structure_details
;
 Flack x determined using 1751 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.004(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     425
_refine_ls_number_reflns         7413
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.1177
_refine_ls_R_factor_gt           0.0706
_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^)+(0.0536P)^2^+11.1068P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1466
_refine_ls_wR_factor_ref         0.1732
_reflns_Friedel_coverage         0.783
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                5236
_reflns_number_total             7413
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7dt02700a2.cif
_cod_data_source_block           7
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_cell_volume        3627.5(5)
_cod_database_code               7044118
_shelx_shelxl_version_number     2016/6
_shelx_res_checksum              48184