1,8-Bis(silylamido)naphthalene complexes of magnesium and zinc synthesised through alkane elimination reactions.
Bradley, Mark A.; Birchall, Chris; Blake, Alexander J.; Lewis, William; Moxey, Graeme J.; Kays, Deborah L.; Dalton transactions (Cambridge, England : 2003) 46 (2017) 4101–4110; doi:10.1039/c7dt00471k

data_7042260
_publ_section_title
;
 1,8-Bis(silylamido)naphthalene complexes of magnesium and zinc
 synthesised through alkane elimination reactions.
;
_journal_issue                   12
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4101
_journal_page_last               4110
_journal_paper_doi               10.1039/c7dt00471k
_journal_volume                  46
_journal_year                    2017
_chemical_formula_moiety         'C52 H66 Mg2 N2 O2 Si2'
_chemical_formula_sum            'C52 H66 Mg2 N2 O2 Si2'
_chemical_formula_weight         855.86
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2016-10-24
_audit_creation_method
;
Olex2 1.2
(compiled 2016.09.09 svn.r3337 for OlexSys, GUI svn.r5227)
;
_audit_update_record
;
2017-02-07 deposited with the CCDC.
2017-03-01 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 105.207(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   20.089(5)
_cell_length_b                   10.280(3)
_cell_length_c                   24.015(6)
_cell_measurement_reflns_used    3473
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      27.51
_cell_measurement_theta_min      2.24
_cell_volume                     4786(2)
_computing_cell_refinement       'SAINT V6.36A (Bruker, 2016)'
_computing_data_reduction        'SAINT V6.36A (Bruker, 2016)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      90(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area detector'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0791
_diffrn_reflns_av_unetI/netI     0.0917
_diffrn_reflns_Laue_measured_fraction_full 0.984
_diffrn_reflns_Laue_measured_fraction_max 0.984
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            11488
_diffrn_reflns_point_group_measured_fraction_full 0.984
_diffrn_reflns_point_group_measured_fraction_max 0.984
_diffrn_reflns_theta_full        25.027
_diffrn_reflns_theta_max         25.027
_diffrn_reflns_theta_min         2.101
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.142
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5366
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2007/2 (Bruker,2007) was used for absorption correction.
wR2(int) was 0.1455 before and 0.0648 after correction.
The Ratio of minimum to maximum transmission is 0.7197.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.188
_exptl_crystal_description       block
_exptl_crystal_F_000             1840
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.590
_refine_diff_density_min         -0.469
_refine_diff_density_rms         0.088
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.154
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     274
_refine_ls_number_reflns         4174
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.154
_refine_ls_R_factor_all          0.1262
_refine_ls_R_factor_gt           0.0984
_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^)+(0.0199P)^2^+59.1330P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2013
_refine_ls_wR_factor_ref         0.2109
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3103
_reflns_number_total             4174
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7dt00471k1.cif
_cod_data_source_block           2
_cod_depositor_comments
'Adding full bibliography for 7042258--7042265.cif.'
_cod_database_code               7042260
_nottingham_internal_coll_name   MGMBLC
_nottingham_internal_coll_number 10306
_nottingham_internal_coll_client MB/DLK
_nottingham_internal_coll_type   hemisphere
_nottingham_internal_coll_frame_method \w
_nottingham_internal_coll_frame_time 60
_nottingham_internal_coll_frame_width 0.3
_nottingham_internal_coll_user   MB
_nottingham_internal_coll_date   06/06/2011
_nottingham_internal_process_date 07/06/2011
_nottingham_internal_process_user MB
_nottingham_internal_solution_date 07/06/2011
_nottingham_internal_solution_user MB
_nottingham_internal_refinement_date 29/02/2012
_nottingham_internal_refinement_user MB
_nottingham_internal_self_archive_date 25/2/2014
_nottingham_internal_self_validation_date 25/02/2014
_nottingham_internal_self_validation_user MB
_nottingham_internal_validation_date 24/10/2016
_nottingham_internal_validation_user pczwl
_nottingham_internal_archive_date 24/10/2016
_shelx_shelxl_version_number     2016/6
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C20(H20A,H20B), C21(H21A,H21B), C22(H22A,H22B), C24(H24A,H24B), C25(H25A,
 H25B), C26(H26A,H26B), C27(H27A,H27B)
2.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C9(H9), C10(H10), C11(H11), C12(H12), C13(H13),
 C15(H15), C16(H16), C17(H17), C18(H18), C19(H19)
2.c Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C), C23(H23A,H23B,H23C)
;
_shelx_res_checksum              54599
_olex2_computing_structure_refinement_long 'ShelXL (Sheldrick, 2008)'
_olex2_date_sample_data_collection 2011-06-06
_olex2_date_sample_submission    2011-03-25
_olex2_submission_special_instructions 'No special instructions were received'