Group 14 Metal Terminal Phosphides: Correlating Structure with |JMP|
Eric C. Y. Tam; Nicola A. Maynard; David C. Apperley; J. David Smith; Martyn P. Coles; J. Robin Fulton; Inorganic Chemistry 51 (2012) 9403–9415; doi:10.1021/ic301208d

data_4330230
_publ_section_title
;
 Group 14 Metal Terminal Phosphides: Correlating Structure with |JMP|
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              9403
_journal_page_last               9415
_journal_paper_doi               10.1021/ic301208d
_journal_volume                  51
_journal_year                    2012
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C24 H20 P2'
_chemical_formula_sum            'C24 H20 P2'
_chemical_formula_weight         370.34
_space_group_IT_number           14
_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   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.2
_audit_creation_date             2011-09-07T09:44:15-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 105.948(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.1617(3)
_cell_length_b                   7.3499(4)
_cell_length_c                   21.8665(8)
_cell_measurement_reflns_used    10247
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.103
_cell_measurement_theta_min      3.395
_cell_measurement_wavelength     0.71073
_cell_volume                     952.17(8)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_orient_matrix_type       'by Bruker AXS Collect from scalepack cell'
_diffrn_orient_matrix_UB_11      -0.143944
_diffrn_orient_matrix_UB_12      -0.619778E-1
_diffrn_orient_matrix_UB_13      0.33353E-2
_diffrn_orient_matrix_UB_21      -0.749539E-1
_diffrn_orient_matrix_UB_22      0.119434
_diffrn_orient_matrix_UB_23      -0.62015E-2
_diffrn_orient_matrix_UB_31      -0.1523E-2
_diffrn_orient_matrix_UB_32      -0.201407E-1
_diffrn_orient_matrix_UB_33      -0.470387E-1
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.069
_diffrn_reflns_av_unetI/netI     0.0436
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            11493
_diffrn_reflns_theta_full        27.11
_diffrn_reflns_theta_max         27.11
_diffrn_reflns_theta_min         3.44
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    0.233
_exptl_absorpt_correction_T_max  1.003
_exptl_absorpt_correction_T_min  0.9354
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
        [c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.292
_exptl_crystal_description       Blade
_exptl_crystal_F_000             388
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.05
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.001
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     158
_refine_ls_number_reflns         2102
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.001
_refine_ls_R_factor_all          0.0524
_refine_ls_R_factor_gt           0.0378
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0372P)^2^+0.4590P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0836
_refine_ls_wR_factor_ref         0.0894
_reflns_number_gt                1709
_reflns_number_total             2102
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic301208d_si_001_8.cif
_cod_data_source_block           (Ph2PPPh2)-aug811
_cod_original_sg_symbol_Hall     '-P 2y bc'
_cod_database_code               4330230