N-H deprotonation of a diaminodialkoxido diborane(4) - a structural study on bifunctional Lewis acids/bases and their dimerisation to B(sp<sup>2</sup>)<sub>2</sub>B(sp<sup>3</sup>)<sub>2</sub>N<sub>2</sub> six membered rings.
Drescher, Wiebke; Kleeberg, Christian; Dalton transactions (Cambridge, England : 2003) 50 (2021) 13149–13157; doi:10.1039/d1dt02327f

data_7708181
_publ_section_title
;
 N-H deprotonation of a diaminodialkoxido diborane(4) - a structural study
 on bifunctional Lewis acids/bases and their dimerisation to
 B(sp<sup>2</sup>)<sub>2</sub>B(sp<sup>3</sup>)<sub>2</sub>N<sub>2</sub>
 six membered rings.
;
_journal_issue                   37
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              13149
_journal_page_last               13157
_journal_paper_doi               10.1039/d1dt02327f
_journal_volume                  50
_journal_year                    2021
_chemical_formula_moiety         'C66.91 H105.82 B8 N8 Na4 O12.73'
_chemical_formula_sum            'C66.91 H105.82 B8 N8 Na4 O12.73'
_chemical_formula_weight         1404.41
_space_group_crystal_system      trigonal
_space_group_IT_number           154
_space_group_name_Hall           'P 32 2"'
_space_group_name_H-M_alt        'P 32 2 1'
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_atom_sites_solution_secondary   difmap
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_audit_update_record
;
2021-06-09 deposited with the CCDC.	2021-08-25 downloaded from the CCDC.
;
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_cell_measurement_temperature    100(2)
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_cell_measurement_theta_min      4.42
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_computing_cell_refinement
;
 CrysAlisPro 1.171.38.43 (Rigaku Oxford Diffraction, 2015)
;
_computing_data_collection
;
 CrysAlisPro 1.171.38.43 (Rigaku Oxford Diffraction, 2015)
;
_computing_data_reduction
;
 CrysAlisPro 1.171.38.43 (Rigaku Oxford Diffraction, 2015)
;
_computing_molecular_graphics
;
 K. Brandenburg, 2016, Diamond 4.2.2, Crystal Impact GbR, Bonn, Germany.
;
_computing_publication_material
;
 WinGX v2014.1 (L. J. Farrugia, J. Appl. Cryst., 2012, 45, 849-854.)
;
_computing_structure_refinement
;
 SHELXL-2014/7 (G. M. Sheldrick, Acta Cryst., 2015, A71, 3--8)
;
_computing_structure_solution
;
 SHELXT (Ver. 2014/4) (G. M. Sheldrick, Acta Cryst., 2015, A71, 3--8)
;
_diffrn_ambient_environment      N~2~
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_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Oxford Diffraction, Xcalibur, Atlas, Nova'
_diffrn_measurement_method       \w-scan
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0426
_diffrn_reflns_av_unetI/netI     0.0231
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
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_diffrn_reflns_limit_k_min       -20
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_diffrn_reflns_limit_l_min       -24
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_diffrn_reflns_point_group_measured_fraction_full 0.999
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_diffrn_reflns_theta_max         76.061
_diffrn_reflns_theta_min         3.462
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'Nova (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    0.740
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7937
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 CrysAlisPro 1.171.38.43 (Rigaku Oxford Diffraction, 2015)
 Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_density_diffrn    1.061
_exptl_crystal_description       'fragment of prism'
_exptl_crystal_F_000             2247.4
_exptl_crystal_recrystallization_method
;
 From a solution in THF layered with n-pentane at -40deg C.
;
_exptl_crystal_size_max          0.311
_exptl_crystal_size_mid          0.246
_exptl_crystal_size_min          0.242
_refine_diff_density_max         0.293
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_refine_diff_density_rms         0.053
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.11(10)
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     535
_refine_ls_number_reflns         9108
_refine_ls_number_restraints     60
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0554
_refine_ls_R_factor_gt           0.0535
_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^)+(0.0766P)^2^+2.7526P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1453
_refine_ls_wR_factor_ref         0.1469
_reflns_Friedel_coverage         0.811
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.996
_reflns_number_gt                8695
_reflns_number_total             9108
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1dt02327f2.cif
_cod_data_source_block           wo2ck
_cod_depositor_comments
'Adding full bibliography for 7708180--7708186.cif.'
_cod_original_cell_volume        6591.19(17)
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_shelx_res_checksum              68401
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