Acyclic 1,2-Dimagnesioethanes/-ethene Derived from Magnesium(I) Compounds: Multipurpose Reagents for Organometallic Synthesis
Jones, Cameron; Dange, Deepak; Gair, Andrew; Jones, Dafydd; Juckel, Martin; Aldridge, Simon; Chemical Science  (2019) –; doi:10.1039/C9SC00200F

data_1550548
_publ_section_title
;
 Acyclic 1,2-Dimagnesioethanes/-ethene Derived from Magnesium(I)
 Compounds: Multipurpose Reagents for Organometallic Synthesis
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/C9SC00200F
_journal_year                    2019
_chemical_formula_sum            'C59 H76 Mg2 N4'
_chemical_formula_weight         889.85
_space_group_crystal_system      monoclinic
_space_group_IT_number           9
_space_group_name_Hall           'C -2yc'
_space_group_name_H-M_alt        'C 1 c 1'
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2019-01-11 deposited with the CCDC.
2019-02-04 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 93.089(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   19.9645(7)
_cell_length_b                   11.2773(4)
_cell_length_c                   22.9784(8)
_cell_measurement_reflns_used    8241
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      25.50
_cell_measurement_theta_min      3.33
_cell_volume                     5166.0(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker Apex X8'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0989
_diffrn_reflns_av_unetI/netI     0.0703
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            22426
_diffrn_reflns_point_group_measured_fraction_full 0.863
_diffrn_reflns_point_group_measured_fraction_max 0.859
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.499
_diffrn_reflns_theta_min         3.333
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  0.9895
_exptl_absorpt_correction_T_min  0.9799
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sortav (Blessing)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.144
_exptl_crystal_description       block
_exptl_crystal_F_000             1928
_exptl_crystal_size_max          0.220
_exptl_crystal_size_mid          0.130
_exptl_crystal_size_min          0.120
_refine_diff_density_max         1.171
_refine_diff_density_min         -0.601
_refine_diff_density_rms         0.087
_refine_ls_abs_structure_details
;
 Flack x determined using 2150 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.6(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     599
_refine_ls_number_reflns         8241
_refine_ls_number_restraints     32
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.1031
_refine_ls_R_factor_gt           0.0921
_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^)+(0.1627P)^2^+11.3687P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2567
_refine_ls_wR_factor_ref         0.2705
_reflns_Friedel_coverage         0.720
_reflns_Friedel_fraction_full    0.727
_reflns_Friedel_fraction_max     0.719
_reflns_number_gt                6885
_reflns_number_total             8241
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9sc00200f2.cif
_cod_data_source_block           Cj1326
_cod_database_code               1550548
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.981
_shelx_estimated_absorpt_t_max   0.990
_shelx_res_checksum              27211