Synthesis of heteroleptic calcium amide complexes <i>via</i> manipulation of the Schlenk equilibrium.
de Vere-Tucker, Matthew; Slawin, Alexandra M. Z.; Cordes, David B.; Stasch, Andreas; Dalton transactions (Cambridge, England : 2003) 55 (2026) 1708–1715; doi:10.1039/d5dt02949j

data_7720442
_publ_section_title
;
 Synthesis of heteroleptic calcium amide complexes <i>via</i> manipulation
 of the Schlenk equilibrium.
;
_journal_issue                   4
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              1708
_journal_page_last               1715
_journal_paper_doi               10.1039/d5dt02949j
_journal_volume                  55
_journal_year                    2026
_chemical_formula_moiety         'C43 H77 Ca N3 O Si2'
_chemical_formula_sum            'C43 H77 Ca N3 O Si2'
_chemical_formula_weight         748.35
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2025-06-04
_audit_creation_method           'by CrystalStructure 4.3'
_audit_update_record
;
2025-12-08 deposited with the CCDC.	2025-12-23 downloaded from the CCDC.
;
_cell_angle_alpha                90.0000
_cell_angle_beta                 103.817(2)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   12.1819(2)
_cell_length_b                   18.8361(3)
_cell_length_c                   20.6597(4)
_cell_measurement_reflns_used    38776
_cell_measurement_temperature    93
_cell_measurement_theta_max      28.20
_cell_measurement_theta_min      2.04
_cell_volume                     4603.39(14)
_computing_cell_refinement       'CrysAlisPro 1.171.39.8d (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.39.8d (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.39.8d (Rigaku OD, 2015)'
_computing_molecular_graphics    'CrystalStructure 4.3'
_computing_publication_material  'CrystalStructure 4.3 (Rigaku, 2018)'
_computing_structure_refinement  'SHELXL Version 2019/3 (Sheldrick, 2015B)'
_computing_structure_solution    'SHELXT Version 2018/2 (Sheldrick, 2015A)'
_diffrn_ambient_temperature      93
_diffrn_detector_area_resol_mean 5.811
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.878
_diffrn_measurement_device_type  'Rigaku XtaLAB P200'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0279
_diffrn_reflns_av_unetI/netI     0.0145
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.878
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            66371
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.878
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.264
_diffrn_reflns_theta_min         1.483
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.220
_exptl_absorpt_correction_T_max  0.978
_exptl_absorpt_correction_T_min  0.486
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.8d (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.080
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1648.00
_exptl_crystal_size_max          0.100
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.38
_refine_diff_density_min         -0.27
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     471
_refine_ls_number_reflns         9998
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0345
_refine_ls_R_factor_gt           0.0311
_refine_ls_shift/su_max          0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0502P)^2^+1.3820P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0858
_refine_ls_wR_factor_ref         0.0878
_reflns_Friedel_coverage         0.000
_reflns_number_gt                9002
_reflns_number_total             9998
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            d5dt02949j2.cif
_cod_data_source_block           8_1
_cod_database_code               7720442
_shelx_res_checksum              53876
_shelx_hkl_checksum              30547