Synthesis of Linear and Cyclic Carbophosphazenes via an Oxidative Chlorination Strategy
Eric Rivard; Alan J. Lough; Tristram Chivers; Ian Manners; Inorganic Chemistry 43 (2004) 802–811; doi:10.1021/ic034954c

data_4310432
_publ_section_title
;
 Synthesis of Linear and Cyclic Carbophosphazenes via an Oxidative
 Chlorination Strategy
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              802
_journal_page_last               811
_journal_paper_doi               10.1021/ic034954c
_journal_volume                  43
_journal_year                    2004
_chemical_formula_moiety         'C25 H29 Cl N2 P, C H2 Cl2, Cl'
_chemical_formula_sum            'C26 H31 Cl4 N2 P'
_chemical_formula_weight         544.30
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 90.3240(17)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.1470(3)
_cell_length_b                   10.0030(3)
_cell_length_c                   24.7400(6)
_cell_measurement_reflns_used    18885
_cell_measurement_temperature    150(1)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.6
_cell_volume                     2758.55(13)
_computing_cell_refinement       'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2002)'
_computing_data_reduction        Denzo-SMN
_computing_molecular_graphics    'SHELXTL V6.12'
_computing_publication_material  'SHELXTL V6.12'
_computing_structure_refinement  'SHELXTL V6.12(Sheldrick, 2001)'
_computing_structure_solution    'SIR-92 (Altomare et al., 1993)'
_diffrn_ambient_temperature      150(1)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f scans and \w scans with \k offsets'
_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  0.0489
_diffrn_reflns_av_sigmaI/netI    0.0691
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            17475
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.62
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.505
_exptl_absorpt_correction_T_max  0.929
_exptl_absorpt_correction_T_min  0.873
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
multi-scan from symmetry-related measurements 
 Sortav (Blessing 1995) 
;
_exptl_crystal_density_diffrn    1.311
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1136
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.336
_refine_diff_density_min         -0.563
_refine_diff_density_rms         0.066
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.015
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         6298
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.015
_refine_ls_R_factor_all          0.0922
_refine_ls_R_factor_gt           0.0478
_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^)+(0.0503P)^2^+1.3091P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1044
_refine_ls_wR_factor_ref         0.1248
_reflns_number_gt                4182
_reflns_number_total             6298
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ic034954csi20031103_051734_4.cif
_cod_data_source_block           compound(8)
_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      'P 21/c'
_cod_database_code               4310432