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_7047984
_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 H38 N2 P2'
_chemical_formula_sum            'C20 H38 N2 P2'
_chemical_formula_weight         368.46
_chemical_properties_physical
Air-sensitive,Moisture-sensitive,Oxygen-sensitive
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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
_audit_conform_dict_version      2.4.3
_audit_creation_date             2018-08-30T11:01:46-00:00
_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                 95.506(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.9020(5)
_cell_length_b                   18.9837(7)
_cell_length_c                   11.9159(6)
_cell_measurement_reflns_used    1654
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      20.06
_cell_measurement_theta_min      2.06
_cell_measurement_wavelength     0.71073
_cell_volume                     2229.58(18)
_computing_cell_refinement
;
X-Area Recipe 1.33.0.0 (STOE, 2015)
;
_computing_data_collection
;
X-Area WinXpose 2.0.22.0 (STOE, 2016)
;
_computing_data_reduction
;
X-Area Integrate 1.72.0.0 (STOE, 2018)
X-Area X-Red32 1.63.4.0 (STOE, 2017) 
;
_computing_molecular_graphics    'Ortep for Windows (Farrugia, 2012)'
_computing_publication_material  'WinGX publication routines (Farrugia, 2012)'
_computing_structure_refinement  'SHELXL-2018/1 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector                 'image plate (34 cm diameter)'
_diffrn_detector_area_resol_mean 6.67
_diffrn_detector_type            'STOE Imaging Plate'
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_details      ' 210 frames, detector distance = 100 mm'
_diffrn_measurement_device       '2-circle diffractometer'
_diffrn_measurement_device_type  'STOE IPDS 2T'
_diffrn_measurement_method       'rotation method, \w scans'
_diffrn_radiation_collimation    '0.6 mm diameter'
_diffrn_radiation_monochromator  'parabolic x-ray mirror'
_diffrn_radiation_polarisn_norm  270
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0871
_diffrn_reflns_av_unetI/netI     0.1058
_diffrn_reflns_Laue_measured_fraction_full 1
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            19942
_diffrn_reflns_point_group_measured_fraction_full 1
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.246
_diffrn_reflns_theta_min         2.025
_diffrn_source                   'GeniX Mo, 0.05 x 0.05 mm2 microfocus'
_diffrn_source_current           1.000
_diffrn_source_power             0.050
_diffrn_source_voltage           50
_exptl_absorpt_coefficient_mu    0.2
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.098
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.665
_refine_diff_density_min         -0.309
_refine_diff_density_rms         0.06
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.002
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     254
_refine_ls_number_reflns         6009
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.002
_refine_ls_R_factor_all          0.1617
_refine_ls_R_factor_gt           0.0656
_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^)+(0.0862P)^2^+0.1436P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.149
_refine_ls_wR_factor_ref         0.1872
_reflns_Friedel_coverage         0
_reflns_number_gt                2831
_reflns_number_total             6009
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt03775b2.cif
_cod_data_source_block           shelx_CCDC12
_cod_depositor_comments
'Adding full bibliography for 7047971--7047984.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7047984
_shelx_estimated_absorpt_t_min   0.961
_shelx_estimated_absorpt_t_max   0.967