Transition metal chemistry of cyclodiphosphanes containing phosphine and amide-phosphine functionalities: formation of a stable dipalladium(II) complex containing a Pd-P σ-bond.
Balakrishna, Maravanji S.; Venkateswaran, Ramalingam; Mague, Joel T.; Dalton transactions (Cambridge, England : 2003) 39 (2010) 11149–11162; doi:10.1039/c0dt00614a

data_7026708
_publ_section_title
;
 Transition metal chemistry of cyclodiphosphanes containing phosphine and
 amide-phosphine functionalities: formation of a stable dipalladium(II)
 complex containing a Pd-P \s-bond.
;
_journal_issue                   46
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              11149
_journal_page_last               11162
_journal_paper_doi               10.1039/c0dt00614a
_journal_volume                  39
_journal_year                    2010
_chemical_formula_moiety         'C44 H46 N2 O2 P4'
_chemical_formula_sum            'C44 H46 N2 O2 P4'
_chemical_formula_weight         758.71
_chemical_name_common
;
1,3-Di-tert-butyl-2,4-bis(2-diphenylphosphanyl-phenoxy)-
(1,3,2,4)diazdiphosphetidine
;
_chemical_name_systematic
;
1,3-Di-tert-butyl-2,4-bis(2-diphenylphosphanyl-
phenoxy)-[1,3,2,4]diazdiphosphetidine
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 104.984(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.0077(8)
_cell_length_b                   29.659(3)
_cell_length_c                   15.362(1)
_cell_measurement_reflns_used    5821
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.85
_cell_measurement_theta_min      2.48
_cell_volume                     3964.6(6)
_computing_cell_refinement       'Bruker SMART (Bruker-AXS, 2000)'
_computing_data_collection       'Bruker SMART (Bruker-AXS, 2000)'
_computing_data_reduction        'Bruker SAINT+ (Bruker-AXS, 2004)'
_computing_molecular_graphics    'Bruker SHELXTL (Bruker-AXS, 2000a)'
_computing_publication_material  'Bruker SHELXTL (Bruker-AXS, 2000a)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Bruker-AXS Smart APEX CCD area detector'
_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     0.71073
_diffrn_reflns_av_R_equivalents  0.0534
_diffrn_reflns_av_sigmaI/netI    0.0892
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       37
_diffrn_reflns_limit_k_min       -38
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            34965
_diffrn_reflns_theta_full        27.75
_diffrn_reflns_theta_max         27.75
_diffrn_reflns_theta_min         1.37
_exptl_absorpt_coefficient_mu    0.230
_exptl_absorpt_correction_T_max  0.9947
_exptl_absorpt_correction_T_min  0.9334
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2002)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.271
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             1600
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.740
_refine_diff_density_min         -0.360
_refine_diff_density_rms         0.071
_refine_ls_abs_structure_details
;
From the value determined for the Flack parameter
(Flack H D (1983), Acta Cryst. A39, 876-881), the crystal was shown to be
a racemic twin.
;
_refine_ls_abs_structure_Flack   0.31(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.007
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     950
_refine_ls_number_reflns         17354
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.007
_refine_ls_R_factor_all          0.0785
_refine_ls_R_factor_gt           0.0566
_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^)+(0.0527P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1107
_refine_ls_wR_factor_ref         0.1203
_reflns_number_gt                13548
_reflns_number_total             17354
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c0dt00614a.txt
_cod_data_source_block           3
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        3964.4(6)
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               7026708