Characterisation of temperature-dependent phase transitions in 2,2-trimethylenedioxy- 4,4,6,6-tetrachlorocyclotriphosphazene, N3P3Cl4[O(CH2)3O]
Simon J Coles; David B Davies; Michael B Hursthouse; Susanne L Huth; Adem Kilic; Mark E Light; Marianne Odlyha; John S Rutherford; Robert A Shaw; Aylin Uslu; Chemistry Central Journal 1 (2007) 20–; doi:10.1186/1752-153X-1-20

data_1547180
_publ_section_title
;
 Characterisation of temperature-dependent phase transitions in
 2,2-trimethylenedioxy- 4,4,6,6-tetrachlorocyclotriphosphazene,
 N3P3Cl4[O(CH2)3O]
;
_journal_name_full               'Chemistry Central Journal'
_journal_page_first              20
_journal_paper_doi               10.1186/1752-153X-1-20
_journal_volume                  1
_journal_year                    2007
_chemical_formula_sum            'C3 H6 Cl4 N3 O2 P3'
_chemical_formula_weight         350.82
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.3686(5)
_cell_length_b                   10.4704(4)
_cell_length_c                   8.7799(3)
_cell_measurement_reflns_used    3278
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1228.96(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0369
_diffrn_reflns_av_sigmaI/netI    0.0483
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            5145
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.03
_exptl_absorpt_coefficient_mu    1.336
_exptl_absorpt_correction_T_max  0.9485
_exptl_absorpt_correction_T_min  0.6900
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV Blessing (1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.896
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.348
_refine_diff_density_rms         0.062
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(8)
_refine_ls_extinction_coef       0.0017(6)
_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   0.922
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         2403
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.922
_refine_ls_R_factor_all          0.0286
_refine_ls_R_factor_gt           0.0253
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0273P)^2^+0.4088P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0615
_refine_ls_wR_factor_ref         0.0631
_reflns_number_gt                2284
_reflns_number_total             2403
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            13065_2007_20_MOESM1_ESM.cif
_cod_data_source_block           120K
_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.

Automatic conversion script
Id: cif_fix_values 5376 2017-05-30 11:51:03Z andrius 
;
_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               1547180