Mechanism of Alkyl Migration in Diorganomagnesium 2,6-Bis(imino)pyridine Complexes: Formation of Grignard-Type Complexes with Square-Planar Mg(II) Centers
Sandoval, John J.; Palma, Pilar; Álvarez, Eleuterio; Cámpora, Juan; Rodríguez-Delgado, Antonio; Organometallics 35 (2016) 3197–; doi:10.1021/acs.organomet.6b00528

data_4086723
_publ_section_title
;
 Mechanism of Alkyl Migration in Diorganomagnesium 2,6-Bis(imino)pyridine
 Complexes: Formation of Grignard-Type Complexes with Square-Planar Mg(II)
 Centers
;
_journal_issue                   18
_journal_name_full               Organometallics
_journal_page_first              3197
_journal_paper_doi               10.1021/acs.organomet.6b00528
_journal_volume                  35
_journal_year                    2016
_chemical_formula_moiety         'C44 H59 Mg N3'
_chemical_formula_sum            'C44 H59 Mg N3'
_chemical_formula_weight         654.25
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 99.003(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.6968(16)
_cell_length_b                   16.713(2)
_cell_length_c                   23.743(3)
_cell_measurement_reflns_used    4491
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      21.60
_cell_measurement_theta_min      2.08
_cell_volume                     4584.3(10)
_computing_cell_refinement       'APEX2 Software Suite (Bruker, 2007)'
_computing_data_collection       'APEX2 Software Suite (Bruker, 2007)'
_computing_data_reduction        'APEX2 Software Suite (Bruker, 2007)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL and publCIF (Westrip, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR2002 (Burla et al., 2003)'
_diffrn_ambient_temperature      213(2)
_diffrn_detector_area_resol_mean 8.26
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
; 
 Bruker-Nonius X8kappa APEX II CCD area detector 
;
_diffrn_measurement_method       'phi and omega scans with narrow frames'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0712
_diffrn_reflns_av_sigmaI/netI    0.0688
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            41514
_diffrn_reflns_theta_full        25.25
_diffrn_reflns_theta_max         25.25
_diffrn_reflns_theta_min         1.50
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_T_max  0.9867
_exptl_absorpt_correction_T_min  0.9763
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
program SADABS, Bruker (2001). 
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    0.948
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1424
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_platon_squeeze_details
;
;
_refine_diff_density_max         0.590
_refine_diff_density_min         -0.525
_refine_diff_density_rms         0.100
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     521
_refine_ls_number_reflns         8273
_refine_ls_number_restraints     246
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0821
_refine_ls_R_factor_gt           0.0641
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1406
_refine_ls_wR_factor_ref         0.2347
_reflns_number_gt                4222
_reflns_number_total             8273
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om6b00528_si_002.cif
_cod_data_source_block           4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/ACS/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 4268 2015-11-12 08:31:59Z antanas 
;
_cod_original_cell_volume        4584.2(10)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4086723