Preparation and structures of 1,2-dihydro-1,2-diphosphaacenaphthylenes and rigid backbone stabilized triphosphenium cation.
Kilian, Petr; Slawin, Alexandra M. Z.; Woollins, J. Derek; Dalton transactions (Cambridge, England : 2003)  (2006) 2175–2183; doi:10.1039/b517071k

data_7007069
_publ_section_title
;
 Preparation and structures of 1,2-dihydro-1,2-diphosphaacenaphthylenes
 and rigid backbone stabilized triphosphenium cation.
;
_journal_issue                   18
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2175
_journal_page_last               2183
_journal_paper_doi               10.1039/b517071k
_journal_year                    2006
_chemical_formula_moiety         'C24 H24 N2 O2 P4'
_chemical_formula_sum            'C24 H24 N2 O2 P4'
_chemical_formula_weight         496.33
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 109.745(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.520(6)
_cell_length_b                   7.1417(13)
_cell_length_c                   18.136(5)
_cell_measurement_reflns_used    3208
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      25.3491
_cell_measurement_theta_min      2.2379
_cell_volume                     2257.7(10)
_computing_cell_refinement       'CrystalClear (Rigaku Corp., 2004)'
_computing_data_collection       'CrystalClear (Rigaku Corp., 2004)'
_computing_data_reduction        'CrystalClear (Rigaku Corp., 2004)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      93(2)
_diffrn_detector_area_resol_mean 0.83
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  CCD
_diffrn_measurement_method       dtprofit.ref
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0536
_diffrn_reflns_av_sigmaI/netI    0.0628
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            7134
_diffrn_reflns_theta_full        25.32
_diffrn_reflns_theta_max         25.32
_diffrn_reflns_theta_min         2.34
_exptl_absorpt_coefficient_mu    0.361
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8060
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.460
_exptl_crystal_description       Prism
_exptl_crystal_F_000             1032
_exptl_crystal_size_max          0.1000
_exptl_crystal_size_mid          0.0300
_exptl_crystal_size_min          0.0300
_refine_diff_density_max         0.392
_refine_diff_density_min         -0.413
_refine_diff_density_rms         0.077
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     148
_refine_ls_number_reflns         2033
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0698
_refine_ls_R_factor_gt           0.0480
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0421P)^2^+4.1518P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1011
_refine_ls_wR_factor_ref         0.1116
_reflns_number_gt                1594
_reflns_number_total             2033
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b517071k.txt
_cod_data_source_block           9
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7007069