Syntheses and Experimental Studies on the Relative Stabilities of Spiro, Ansa, and Bridged Derivatives of Cyclic Tetrameric Fluorophosphazene
Anil J. Elias; Brendan Twamley; Jean'ne M. Shreeve; Inorganic Chemistry 40 (2001) 2120–2126; doi:10.1021/ic001294s

data_4319569
_publ_section_title
;
 Syntheses and Experimental Studies on the Relative Stabilities of Spiro,
 Ansa, and Bridged Derivatives of Cyclic Tetrameric Fluorophosphazene
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              2120
_journal_page_last               2126
_journal_paper_doi               10.1021/ic001294s
_journal_volume                  40
_journal_year                    2001
_chemical_formula_sum            'C3 H6 F6 N4 O2 P4'
_chemical_formula_weight         368.00
_chemical_name_common            N4P4F6O(CH3)3O
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_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                   9.40730(10)
_cell_length_b                   13.5890(2)
_cell_length_c                   9.38060(10)
_cell_measurement_reflns_used    4594
_cell_measurement_temperature    203(2)
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      2.64
_cell_volume                     1199.18(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL v. 5.10'
_computing_molecular_graphics    'XP, Bruker SHELXTL v. 5.10'
_computing_publication_material  'XCIF, Bruker SHELXTL v. 5.10'
_computing_structure_refinement  'XL, Bruker SHELXTL v. 5.10'
_computing_structure_solution    'XS, Bruker SHELXTL v. 5.10'
_diffrn_ambient_temperature      203(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Siemens SMART 1000'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0425
_diffrn_reflns_av_sigmaI/netI    0.0320
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            8067
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.64
_diffrn_standards_decay_%        '< 0.01%'
_diffrn_standards_interval_count 'beginning and end'
_diffrn_standards_number         '50 frames remeasured'
_exptl_absorpt_coefficient_mu    0.711
_exptl_absorpt_correction_T_max  0.9653
_exptl_absorpt_correction_T_min  0.7890
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1998)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.038
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             728
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.768
_refine_diff_density_min         -0.545
_refine_diff_density_rms         0.134
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.143
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     91
_refine_ls_number_reflns         1101
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.143
_refine_ls_R_factor_all          0.0731
_refine_ls_R_factor_gt           0.0656
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1049P)^2^+1.2130P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1702
_refine_ls_wR_factor_ref         0.1764
_reflns_number_gt                966
_reflns_number_total             1101
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic001294s_2.cif
_cod_data_source_block           bt121
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to the built-in table from CIF Core
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Empirical'
changed to 'empirical' according to the built-in table from CIF Core
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_database_code               4319569