Syntheses, structures and catalytic activity of tetranuclear Mg complexes in the ROP of cyclic esters under industrially relevant conditions.
Ghosh, Swarup; Wölper, Christoph; Tjaberings, Alexander; Gröschel, André H; Schulz, Stephan; Dalton transactions (Cambridge, England : 2003) 49 (2020) 375–387; doi:10.1039/c9dt04359d

data_7702282
_publ_section_title
;
 Syntheses, structures and catalytic activity of tetranuclear Mg complexes
 in the ROP of cyclic esters under industrially relevant conditions.
;
_journal_issue                   2
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              375
_journal_page_last               387
_journal_paper_doi               10.1039/c9dt04359d
_journal_volume                  49
_journal_year                    2020
_chemical_formula_sum            'C64 H84 Br8 Mg4 N4 O14'
_chemical_formula_weight         1869.87
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2017/1
_audit_update_record
;
2019-08-20 deposited with the CCDC.	2019-11-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.6910(13)
_cell_length_b                   21.9463(18)
_cell_length_c                   22.8370(18)
_cell_measurement_reflns_used    9585
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.02
_cell_measurement_theta_min      2.44
_cell_volume                     7362.9(11)
_computing_cell_refinement       'BRUKER APEX2(v2009.5-1)'
_computing_data_collection       'BRUKER APEX2(v2009.5-1)'
_computing_data_reduction        'BRUKER APEX2(v2009.5-1)'
_computing_molecular_graphics    'ORTEP/PLATON (Spek)'
_computing_publication_material  'BRUKER AXS SHELXTL (c) 2008 / Vers. 2008/4'
_computing_structure_refinement  'SHELXL-2017/1 (Sheldrick, 2017)'
_computing_structure_solution    'BRUKER APEX2(v2009.5-1)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 512
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker D8 KAPPA II (APEX II detector)'
_diffrn_measurement_method       'Data collection strategy APEX 2/COSMO'
_diffrn_radiation_monochromator  'Triumph Goebel mirror'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0772
_diffrn_reflns_av_unetI/netI     0.0717
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            153221
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.993
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.351
_diffrn_reflns_theta_min         1.287
_exptl_absorpt_coefficient_mu    4.454
_exptl_absorpt_correction_T_max  0.75
_exptl_absorpt_correction_T_min  0.59
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
 SADABS
 R.H. Blessing, Acta Cryst. (1995) A51 33-38 
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.687
_exptl_crystal_description       block
_exptl_crystal_F_000             3744
_exptl_crystal_size_max          0.160
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.070
_refine_diff_density_max         0.745
_refine_diff_density_min         -0.573
_refine_diff_density_rms         0.089
_refine_ls_abs_structure_details
;
 Flack x determined using 4585 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.056(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1051
_refine_ls_number_reflns         18268
_refine_ls_number_restraints     1495
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0927
_refine_ls_R_factor_gt           0.0455
_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^)+(0.0409P)^2^+4.8449P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0922
_refine_ls_wR_factor_ref         0.1033
_reflns_Friedel_coverage         0.943
_reflns_Friedel_fraction_full    0.996
_reflns_Friedel_fraction_max     0.988
_reflns_number_gt                12006
_reflns_number_total             18268
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9dt04359d2.cif
_cod_data_source_block           sw_mgbrcubem
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_atom_sites_solution_secondary' value 'diffmap' was
changed to 'difmap'.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 

 Adding full bibliography for 7702280--7702283.cif.
;
_cod_database_code               7702282
_shelx_shelxl_version_number     2017/1
_shelx_estimated_absorpt_t_min   0.536
_shelx_estimated_absorpt_t_max   0.746
_shelx_res_checksum              79942