A series of neutral alkaline earth metal hydride complexes supported by a bulky, unsymmetrical β-diketiminate ligand, [{(<sup>Dip/TCHP</sup>Nacnac)M(μ-H)}<sub>2</sub>] (M = Mg, Ca, Sr or Ba).
Kennedy, Dominic B.; Evans, Matthew J.; Jones, Dafydd D. L.; Parr, Joseph M.; Hill, Michael S.; Jones, Cameron; Chemical communications (Cambridge, England) 60 (2024) 10894–10897; doi:10.1039/d4cc04286g

data_7133689
_publ_section_title
;
 A series of neutral alkaline earth metal hydride complexes supported by a
 bulky, unsymmetrical &#x3b2;-diketiminate ligand,
 [{(<sup>Dip/TCHP</sup>Nacnac)M(&#x3bc;-H)}<sub>2</sub>] (M = Mg, Ca, Sr
 or Ba).
;
_journal_issue                   78
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              10894
_journal_page_last               10897
_journal_paper_doi               10.1039/d4cc04286g
_journal_volume                  60
_journal_year                    2024
_chemical_formula_sum            'C51 H85 N3 O Si2 Sr'
_chemical_formula_weight         900.01
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2024-08-21 deposited with the CCDC.	2024-09-05 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 96.56(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.680(3)
_cell_length_b                   18.660(4)
_cell_length_c                   22.470(5)
_cell_measurement_reflns_used    10105
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.020
_cell_measurement_theta_min      1.422
_cell_volume                     5282(2)
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/4 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 13.3
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.972
_diffrn_measurement_device_type  MX2
_diffrn_measurement_method       'Dectris Eiger 16M'
_diffrn_radiation_type           Synchrotron
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.4503
_diffrn_reflns_av_unetI/netI     0.2244
_diffrn_reflns_Laue_measured_fraction_full 0.984
_diffrn_reflns_Laue_measured_fraction_max 0.972
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            83908
_diffrn_reflns_point_group_measured_fraction_full 0.984
_diffrn_reflns_point_group_measured_fraction_max 0.972
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.020
_diffrn_reflns_theta_min         1.422
_diffrn_source                   'MX2 Beamline Australian Synchrotron'
_exptl_absorpt_coefficient_mu    1.102
_exptl_absorpt_correction_T_max  'Value not reported by XDS'
_exptl_absorpt_correction_T_min  'Value not reported by XDS'
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'XDS (Kabsch, 2010)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.132
_exptl_crystal_description       needle
_exptl_crystal_F_000             1944
_exptl_crystal_size_max          0.02
_exptl_crystal_size_mid          0.005
_exptl_crystal_size_min          0.005
_exptl_transmission_factor_max   'Value not reported by XDS'
_exptl_transmission_factor_min   'Value not reported by XDS'
_refine_diff_density_max         1.050
_refine_diff_density_min         -1.141
_refine_diff_density_rms         0.100
_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     535
_refine_ls_number_reflns         10105
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0525
_refine_ls_R_factor_gt           0.0340
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0162P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0819
_refine_ls_wR_factor_ref         0.0890
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7238
_reflns_number_total             10105
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4cc04286g2.cif
_cod_data_source_block           cj1702
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-Scan' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 8170 2020-07-09 18:12:32Z antanas 

 Adding full bibliography for 7133684--7133690.cif.
;
_cod_original_cell_volume        5281.8(18)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7133689
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   'Value not reported by XDS'
_shelx_estimated_absorpt_t_max   'Value not reported by XDS'
_shelx_res_checksum              65101
_shelx_hkl_checksum              22890