Kinetic stabilisation of a molecular strontium hydride complex using an extremely bulky amidinate ligand.
de Bruin-Dickason, Caspar N; Sutcliffe, Thomas; Alvarez Lamsfus, Carlos; Deacon, Glen B.; Maron, Laurent; Jones, Cameron; Chemical communications (Cambridge, England) 54 (2018) 786–789; doi:10.1039/c7cc09362d

data_7121076
_publ_section_title
;
 Kinetic stabilisation of a molecular strontium hydride complex using an
 extremely bulky amidinate ligand.
;
_journal_issue                   7
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              786
_journal_page_last               789
_journal_paper_doi               10.1039/c7cc09362d
_journal_volume                  54
_journal_year                    2018
_chemical_formula_sum            'C64 H81 N3 Si2 Sr'
_chemical_formula_weight         1036.12
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_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
_audit_update_record
;
2017-12-05 deposited with the CCDC.
2018-01-02 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 104.1470(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.9440(3)
_cell_length_b                   23.9840(6)
_cell_length_c                   20.6946(4)
_cell_measurement_reflns_used    9918
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      24.98
_cell_measurement_theta_min      2.39
_cell_volume                     5748.5(2)
_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-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Apex X8'
_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  0.0984
_diffrn_reflns_av_sigmaI/netI    0.0605
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            115948
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    1.020
_exptl_absorpt_correction_T_max  0.904
_exptl_absorpt_correction_T_min  0.860
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sortav (Blessing)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.197
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2208
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.801
_refine_diff_density_min         -0.695
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     641
_refine_ls_number_reflns         11289
_refine_ls_number_restraints     14
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0774
_refine_ls_R_factor_gt           0.0432
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0369P)^2^+4.9057P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0885
_refine_ls_wR_factor_ref         0.1017
_reflns_number_gt                8070
_reflns_number_total             11289
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7cc09362d2.cif
_cod_data_source_block           compound8
_cod_depositor_comments
'Adding full bibliography for 7121071--7121080.cif.'
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7121076