Probing the electronic boundaries between trigonal and tetrahedral coordination at beryllium.
Buchner, Magnus R.; Müller, Matthias; Spang, Nils; Dalton transactions (Cambridge, England : 2003) 49 (2020) 7708–7712; doi:10.1039/d0dt01442g

data_7704169
_publ_section_title
;
 Probing the electronic boundaries between trigonal and tetrahedral
 coordination at beryllium.
;
_journal_issue                   23
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              7708
_journal_page_last               7712
_journal_paper_doi               10.1039/d0dt01442g
_journal_volume                  49
_journal_year                    2020
_chemical_formula_moiety         'C12 H31 Be Cl3 N2'
_chemical_formula_sum            'C12 H31 Be Cl3 N2'
_chemical_formula_weight         318.75
_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   mixed
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2020-04-01 deposited with the CCDC.	2020-04-23 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 92.653(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.2229(3)
_cell_length_b                   10.8012(3)
_cell_length_c                   13.2687(3)
_cell_measurement_reflns_used    20541
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      79.54
_cell_measurement_theta_min      3.62
_cell_volume                     1749.88(8)
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'STOE STADIVARI'
_diffrn_measurement_method       'rotation method, \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0290
_diffrn_reflns_av_unetI/netI     0.0265
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.987
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            19102
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         78.622
_diffrn_reflns_theta_min         3.620
_diffrn_source                   'GeniX 3D HF Cu'
_exptl_absorpt_coefficient_mu    4.613
_exptl_absorpt_correction_T_max  0.5363
_exptl_absorpt_correction_T_min  0.1095
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
STOE LANA, absorption correction by scaling of reflection intensities.
J. Koziskova, F. Hahn, J. Richter, J. Kozisek, "Comparison of different
absorption corrections on the model structure of tetrakis(\m~2~-acetato)-
diaqua-di-copper(II)", Acta Chimica Slovaca, vol. 9, no. 2, 2016, pp. 136 - 140.
Afterwards a spherical absorption correction was performed within STOE LANA.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.210
_exptl_crystal_description       block
_exptl_crystal_F_000             688
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.288
_refine_diff_density_min         -0.347
_refine_diff_density_rms         0.053
_refine_ls_extinction_coef       0.0012(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     174
_refine_ls_number_reflns         3729
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0429
_refine_ls_R_factor_gt           0.0318
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0546P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0824
_refine_ls_wR_factor_ref         0.0862
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2973
_reflns_number_total             3729
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0dt01442g2.cif
_cod_data_source_block           3_CCDC2
_cod_depositor_comments
'Adding full bibliography for 7704167--7704172.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7704169
_shelx_shelxl_version_number     2018/3
_shelx_res_checksum              93212