Facile scission of isonitrile carbon-nitrogen triple bond using a diborane(4) reagent
Hiroki Asakawa; Ka-Ho Lee; Zhenyang Lin; Makoto Yamashita; Nature Communications 5 (2014) 4245–; doi:10.1038/ncomms5245

data_1548301
_publ_section_title
;
 Facile scission of isonitrile carbon-nitrogen triple bond using a
 diborane(4) reagent
;
_journal_name_full               'Nature Communications'
_journal_page_first              4245
_journal_paper_doi               10.1038/ncomms5245
_journal_volume                  5
_journal_year                    2014
_chemical_formula_moiety         'C34 H52 B2 N2 O2'
_chemical_formula_sum            'C34 H52 B2 N2 O2'
_chemical_formula_weight         542.39
_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'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                90
_cell_angle_beta                 92.731(9)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.923(6)
_cell_length_b                   15.760(6)
_cell_length_c                   15.026(5)
_cell_measurement_reflns_used    5470
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      31.3379
_cell_measurement_theta_min      2.5848
_cell_volume                     3293(2)
_computing_cell_refinement       'RIGAKU CrystalClear'
_computing_data_collection       'RIGAKU CrystalClear'
_computing_data_reduction        'RIGAKU CrystalClear'
_computing_molecular_graphics    'Yadokari-XG 2009(Wakita Nemoto et al.)'
_computing_publication_material  'Yadokari-XG 2009(Wakita,Nemoto et al.)'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    SIR-2004
_diffrn_ambient_temperature      93(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 98.2000
_diffrn_measured_fraction_theta_max 31.3379
_diffrn_measurement_device_type  'Rigaku VariMax Saturn'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'rotating-anode X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0872
_diffrn_reflns_av_unetI/netI     0.0915
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.987
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            24020
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        31.3379
_diffrn_reflns_theta_max         25.997
_diffrn_reflns_theta_min         3.007
_exptl_absorpt_coefficient_mu    0.066
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7740
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.094
_exptl_crystal_description       Block
_exptl_crystal_F_000             1184
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.080
_refine_diff_density_max         0.272
_refine_diff_density_min         -0.292
_refine_diff_density_rms         0.066
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         6390
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.1204
_refine_ls_R_factor_gt           0.0743
_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^)+(0.0946P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1687
_refine_ls_wR_factor_ref         0.1986
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                4071
_reflns_number_total             6390
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            6.cif
_cod_data_source_block           6
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to the built-in table from CIF Core dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 5376 2017-05-30 11:51:03Z andrius 
;
_cod_database_code               1548301
_shelx_estimated_absorpt_t_min   0.987
_shelx_estimated_absorpt_t_max   0.995
_shelxl_version_number           2014-1
_shelx_res_checksum              53705
_shelx_hkl_checksum              89785