Chiral configurations of spermine-bridged cyclotriphosphazatrienes
Simon J. Coles; David B. Davies; Robert J. Eaton; Michael B. Hursthouse; Adem Kiliç; Thomas A. Mayer; Robert A. Shaw; Gönül Yenilmez; J. Chem. Soc., Dalton Trans.  (2002) 365–370; doi:10.1039/b104973a

data_7010877
_publ_section_title
;
 Chiral configurations of spermine-bridged cyclotriphosphazatrienes
;
_journal_issue                   3
_journal_name_full               'J. Chem. Soc., Dalton Trans.'
_journal_page_first              365
_journal_page_last               370
_journal_paper_doi               10.1039/b104973a
_journal_year                    2002
_chemical_formula_sum            'C34 H42 Cl4 N10 P6'
_chemical_formula_weight         918.40
_chemical_name_systematic
;
?
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 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                   32.910(7)
_cell_length_b                   10.436(2)
_cell_length_c                   13.554(3)
_cell_measurement_reflns_used    23324
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     4655.1(17)
_computing_cell_refinement       'DENZO, COLLECT'
_computing_data_reduction        'DENZO, COLLECT'
_computing_molecular_graphics    'CAMERON (Watkin, Pearce 1995)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.868
_diffrn_measured_fraction_theta_max 0.868
_diffrn_measurement_device_type  'Nonius KappaCCD Area Detector'
_diffrn_measurement_method       '\\f and \\w scans to fill Ewald Sphere'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0921
_diffrn_reflns_av_sigmaI/netI    0.1624
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            21779
_diffrn_reflns_theta_full        26.52
_diffrn_reflns_theta_max         26.52
_diffrn_reflns_theta_min         3.01
_exptl_absorpt_coefficient_mu    0.497
_exptl_absorpt_correction_T_max  0.9804
_exptl_absorpt_correction_T_min  0.9428
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.310
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1896
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.235
_refine_diff_density_min         -0.227
_refine_diff_density_rms         0.047
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(7)
_refine_ls_extinction_coef       0.00106(16)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.931
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     516
_refine_ls_number_reflns         7869
_refine_ls_number_restraints     37
_refine_ls_restrained_S_all      0.929
_refine_ls_R_factor_all          0.1583
_refine_ls_R_factor_gt           0.0512
_refine_ls_shift/su_max          0.029
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0245P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0764
_refine_ls_wR_factor_ref         0.0983
_reflns_number_gt                3880
_reflns_number_total             7869
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b104973a.txt
_cod_data_source_block           3ca
_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 

The following automatic conversions were performed:

'_exptl_absorpt_correction_type' tag value 'multi-scans' was replaced
with 'multi-scan' value.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_cell_volume        4655.1(16)
_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               7010877