Symmetrical and unsymmetrical diphosphanes with diversified alkyl, aryl, and amino substituents.
Szynkiewicz, Natalia; Ponikiewski, Łukasz; Grubba, Rafał; Dalton transactions (Cambridge, England : 2003) 47 (2018) 16885–16894; doi:10.1039/c8dt03775b

data_7047978
_publ_section_title
;
 Symmetrical and unsymmetrical diphosphanes with diversified alkyl, aryl,
 and amino substituents.
;
_journal_issue                   47
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              16885
_journal_page_last               16894
_journal_paper_doi               10.1039/c8dt03775b
_journal_volume                  47
_journal_year                    2018
_chemical_formula_moiety         'C20  H28  P2'
_chemical_formula_sum            'C20 H28 P2'
_chemical_formula_weight         330.36
_chemical_properties_physical
Air-sensitive,Moisture-sensitive,Oxygen-sensitive
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
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_audit_creation_date             2017-07-06T10:21:44-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2018-09-12 deposited with the CCDC.
2018-11-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 98.474(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   17.4482(13)
_cell_length_b                   6.2244(3)
_cell_length_c                   17.8241(11)
_cell_measurement_reflns_used    11511
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      29.6
_cell_measurement_theta_min      3.47
_cell_measurement_wavelength     0.71073
_cell_volume                     1914.6(2)
_computing_cell_refinement       'STOE X-AREA'
_computing_data_collection       'STOE X-AREA'
_computing_data_reduction        'STOE X-RED'
_computing_molecular_graphics    'Ortep for Windows (Farrugia, 2012)'
_computing_publication_material  'WinGX publication routines (Farrugia, 2012)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector                 'image plate (34 cm diameter)'
_diffrn_detector_area_resol_mean 6.67
_diffrn_detector_type            STOE
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device       '2-circle goniometer'
_diffrn_measurement_device_type  'STOE IPDS 2T'
_diffrn_measurement_method       'rotation method'
_diffrn_radiation_monochromator  'parabolic x-ray mirror'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.072
_diffrn_reflns_av_unetI/netI     0.0686
_diffrn_reflns_Laue_measured_fraction_full 0.983
_diffrn_reflns_Laue_measured_fraction_max 0.976
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            11432
_diffrn_reflns_point_group_measured_fraction_full 0.983
_diffrn_reflns_point_group_measured_fraction_max 0.976
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.272
_diffrn_reflns_theta_min         3.471
_diffrn_source                   'GeniX Mo, 0.05 x 0.05 mm2 microfocus'
_exptl_absorpt_coefficient_mu    0.223
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.146
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             712
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.622
_refine_diff_density_min         -1.135
_refine_diff_density_rms         0.101
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     199
_refine_ls_number_reflns         5109
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.1179
_refine_ls_R_factor_gt           0.0812
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 w=1/[\s^2^(Fo^2^)+(0.1703P)^2^]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.225
_refine_ls_wR_factor_ref         0.2643
_reflns_Friedel_coverage         0
_reflns_number_gt                3361
_reflns_number_total             5109
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt03775b2.cif
_cod_data_source_block           shelx_CCDC7
_cod_depositor_comments
'Adding full bibliography for 7047971--7047984.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7047978
_shelx_estimated_absorpt_t_min   0.946
_shelx_estimated_absorpt_t_max   0.953
_shelx_res_checksum              5268