C2-Symmetric P,N Ligands Derived from Carborane-Based Diphosphetanes: Synthesis and Coordination Chemistry.
Coburger, Peter; Schulz, Jan; Klose, Jennifer; Schwarze, Benedikt; Sárosi, Menyhárt B; Hey-Hawkins, Evamarie; Inorganic chemistry 56 (2017) 292–304; doi:10.1021/acs.inorgchem.6b02173

data_4345152
_publ_section_title
;
 C2-Symmetric P,N Ligands Derived from Carborane-Based Diphosphetanes:
 Synthesis and Coordination Chemistry.
;
_journal_issue                   1
_journal_name_full               'Inorganic chemistry'
_journal_page_first              292
_journal_page_last               304
_journal_paper_doi               10.1021/acs.inorgchem.6b02173
_journal_volume                  56
_journal_year                    2017
_chemical_formula_moiety         'C22 H37 B10 N2 P2 S2, C22 H40 B10 N2 P2 S2'
_chemical_formula_sum            'C44 H77 B20 N4 P4 S4'
_chemical_formula_weight         1130.41
_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'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
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_cell_angle_alpha                90
_cell_angle_beta                 90.438(2)
_cell_angle_gamma                90
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_cell_length_a                   19.0046(5)
_cell_length_b                   15.8477(4)
_cell_length_c                   20.1583(4)
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_cell_measurement_temperature    130
_cell_measurement_theta_max      31.0780
_cell_measurement_theta_min      2.5650
_cell_volume                     6071.1(3)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
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_computing_data_collection
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CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
;
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    SHELXS-2014/7
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      130
_diffrn_detector_area_resol_mean 16.3560
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.936
_diffrn_measurement_device_type  'Xcalibur, Sapphire3, Gemini'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0631
_diffrn_reflns_av_unetI/netI     0.0661
_diffrn_reflns_Laue_measured_fraction_full 0.999
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_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            80634
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.936
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         32.254
_diffrn_reflns_theta_min         2.280
_diffrn_source                   'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.299
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.99191
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_density_diffrn    1.237
_exptl_crystal_description       prism
_exptl_crystal_F_000             2372
_exptl_crystal_size_max          0.3000
_exptl_crystal_size_mid          0.3000
_exptl_crystal_size_min          0.2000
_refine_diff_density_max         1.386
_refine_diff_density_min         -0.570
_refine_diff_density_rms         0.077
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     695
_refine_ls_number_reflns         20166
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.1096
_refine_ls_R_factor_gt           0.0661
_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^)+(0.0466P)^2^+7.8845P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1370
_refine_ls_wR_factor_ref         0.1551
_reflns_Friedel_coverage         0.000
_reflns_number_gt                13440
_reflns_number_total             20166
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ic6b02173_si_002.cif
_cod_data_source_block           6d
_cod_database_code               4345152
_shelx_shelxl_version_number     2014/7