A new and convenient approach towards bis(iminophosphoranyl)methane ligands and their dicationic, cationic, anionic and dianionic derivatives
Matthieu Demange; Leila Boubekeur; Audrey Auffrant; Nicolas Mézailles; Louis Ricard; Xavier Le Goff; Pascal Le Floch; New Journal of Chemistry 30 (2006) 1745–; doi:10.1039/b610049j

data_7052387
_publ_section_title
;
 A new and convenient approach towards bis(iminophosphoranyl)methane
 ligands and their dicationic, cationic, anionic and dianionic
 derivatives
;
_journal_issue                   12
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              1745
_journal_paper_doi               10.1039/b610049j
_journal_volume                  30
_journal_year                    2006
_chemical_formula_sum            'C39 H54 Br2 N2 O P2'
_chemical_formula_weight         788.60
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.1170(10)
_cell_length_b                   18.7140(10)
_cell_length_c                   18.9410(10)
_cell_measurement_reflns_used    251
_cell_measurement_temperature    150.0(1)
_cell_measurement_theta_max      20.0
_cell_measurement_theta_min      3.0
_cell_volume                     3940.6(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150.0(1)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0260
_diffrn_reflns_av_sigmaI/netI    0.0519
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            12758
_diffrn_reflns_theta_full        27.14
_diffrn_reflns_theta_max         27.14
_diffrn_reflns_theta_min         2.83
_exptl_absorpt_coefficient_mu    2.170
_exptl_absorpt_correction_T_max  0.9786
_exptl_absorpt_correction_T_min  0.6353
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.329
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1640
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.659
_refine_diff_density_min         -0.295
_refine_diff_density_rms         0.057
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.016(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     437
_refine_ls_number_reflns         8375
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0492
_refine_ls_R_factor_gt           0.0342
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0348P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0712
_refine_ls_wR_factor_ref         0.0758
_reflns_number_gt                6923
_reflns_number_total             8375
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b610049j.txt
_cod_data_source_block           br2p2n2
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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      'P212121 '
_cod_database_code               7052387